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author | Andreas Baumann <mail@andreasbaumann.cc> | 2019-04-04 11:09:15 (GMT) |
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committer | Andreas Baumann <mail@andreasbaumann.cc> | 2019-04-04 11:09:15 (GMT) |
commit | 2f4d6764d78cf085601b34ac92486405bd11095d (patch) | |
tree | 550601dc79e74fd4c184dc96a95687d1d1238b43 /tools/squid.conf | |
parent | faea5899ba3264581bf75649e4b399d0b69bd125 (diff) | |
parent | 5f16ba81c4af1a05e67806ca989a1dd46248a5fd (diff) | |
download | monitoring-plugins-2f4d6764d78cf085601b34ac92486405bd11095d.tar.gz |
Merge branch 'master' into feature_check_curl
Diffstat (limited to 'tools/squid.conf')
-rw-r--r-- | tools/squid.conf | 7979 |
1 files changed, 7979 insertions, 0 deletions
diff --git a/tools/squid.conf b/tools/squid.conf new file mode 100644 index 0000000..bed7a58 --- /dev/null +++ b/tools/squid.conf | |||
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1 | # WELCOME TO SQUID 3.5.27 | ||
2 | # ---------------------------- | ||
3 | # | ||
4 | # This is the documentation for the Squid configuration file. | ||
5 | # This documentation can also be found online at: | ||
6 | # http://www.squid-cache.org/Doc/config/ | ||
7 | # | ||
8 | # You may wish to look at the Squid home page and wiki for the | ||
9 | # FAQ and other documentation: | ||
10 | # http://www.squid-cache.org/ | ||
11 | # http://wiki.squid-cache.org/SquidFaq | ||
12 | # http://wiki.squid-cache.org/ConfigExamples | ||
13 | # | ||
14 | # This documentation shows what the defaults for various directives | ||
15 | # happen to be. If you don't need to change the default, you should | ||
16 | # leave the line out of your squid.conf in most cases. | ||
17 | # | ||
18 | # In some cases "none" refers to no default setting at all, | ||
19 | # while in other cases it refers to the value of the option | ||
20 | # - the comments for that keyword indicate if this is the case. | ||
21 | # | ||
22 | |||
23 | # Configuration options can be included using the "include" directive. | ||
24 | # Include takes a list of files to include. Quoting and wildcards are | ||
25 | # supported. | ||
26 | # | ||
27 | # For example, | ||
28 | # | ||
29 | # include /path/to/included/file/squid.acl.config | ||
30 | # | ||
31 | # Includes can be nested up to a hard-coded depth of 16 levels. | ||
32 | # This arbitrary restriction is to prevent recursive include references | ||
33 | # from causing Squid entering an infinite loop whilst trying to load | ||
34 | # configuration files. | ||
35 | # | ||
36 | # Values with byte units | ||
37 | # | ||
38 | # Squid accepts size units on some size related directives. All | ||
39 | # such directives are documented with a default value displaying | ||
40 | # a unit. | ||
41 | # | ||
42 | # Units accepted by Squid are: | ||
43 | # bytes - byte | ||
44 | # KB - Kilobyte (1024 bytes) | ||
45 | # MB - Megabyte | ||
46 | # GB - Gigabyte | ||
47 | # | ||
48 | # Values with spaces, quotes, and other special characters | ||
49 | # | ||
50 | # Squid supports directive parameters with spaces, quotes, and other | ||
51 | # special characters. Surround such parameters with "double quotes". Use | ||
52 | # the configuration_includes_quoted_values directive to enable or | ||
53 | # disable that support. | ||
54 | # | ||
55 | # Squid supports reading configuration option parameters from external | ||
56 | # files using the syntax: | ||
57 | # parameters("/path/filename") | ||
58 | # For example: | ||
59 | # acl whitelist dstdomain parameters("/etc/squid/whitelist.txt") | ||
60 | # | ||
61 | # Conditional configuration | ||
62 | # | ||
63 | # If-statements can be used to make configuration directives | ||
64 | # depend on conditions: | ||
65 | # | ||
66 | # if <CONDITION> | ||
67 | # ... regular configuration directives ... | ||
68 | # [else | ||
69 | # ... regular configuration directives ...] | ||
70 | # endif | ||
71 | # | ||
72 | # The else part is optional. The keywords "if", "else", and "endif" | ||
73 | # must be typed on their own lines, as if they were regular | ||
74 | # configuration directives. | ||
75 | # | ||
76 | # NOTE: An else-if condition is not supported. | ||
77 | # | ||
78 | # These individual conditions types are supported: | ||
79 | # | ||
80 | # true | ||
81 | # Always evaluates to true. | ||
82 | # false | ||
83 | # Always evaluates to false. | ||
84 | # <integer> = <integer> | ||
85 | # Equality comparison of two integer numbers. | ||
86 | # | ||
87 | # | ||
88 | # SMP-Related Macros | ||
89 | # | ||
90 | # The following SMP-related preprocessor macros can be used. | ||
91 | # | ||
92 | # ${process_name} expands to the current Squid process "name" | ||
93 | # (e.g., squid1, squid2, or cache1). | ||
94 | # | ||
95 | # ${process_number} expands to the current Squid process | ||
96 | # identifier, which is an integer number (e.g., 1, 2, 3) unique | ||
97 | # across all Squid processes of the current service instance. | ||
98 | # | ||
99 | # ${service_name} expands into the current Squid service instance | ||
100 | # name identifier which is provided by -n on the command line. | ||
101 | # | ||
102 | |||
103 | # TAG: broken_vary_encoding | ||
104 | # This option is not yet supported by Squid-3. | ||
105 | #Default: | ||
106 | # none | ||
107 | |||
108 | # TAG: cache_vary | ||
109 | # This option is not yet supported by Squid-3. | ||
110 | #Default: | ||
111 | # none | ||
112 | |||
113 | # TAG: error_map | ||
114 | # This option is not yet supported by Squid-3. | ||
115 | #Default: | ||
116 | # none | ||
117 | |||
118 | # TAG: external_refresh_check | ||
119 | # This option is not yet supported by Squid-3. | ||
120 | #Default: | ||
121 | # none | ||
122 | |||
123 | # TAG: location_rewrite_program | ||
124 | # This option is not yet supported by Squid-3. | ||
125 | #Default: | ||
126 | # none | ||
127 | |||
128 | # TAG: refresh_stale_hit | ||
129 | # This option is not yet supported by Squid-3. | ||
130 | #Default: | ||
131 | # none | ||
132 | |||
133 | # TAG: hierarchy_stoplist | ||
134 | # Remove this line. Use always_direct or cache_peer_access ACLs instead if you need to prevent cache_peer use. | ||
135 | #Default: | ||
136 | # none | ||
137 | |||
138 | # TAG: log_access | ||
139 | # Remove this line. Use acls with access_log directives to control access logging | ||
140 | #Default: | ||
141 | # none | ||
142 | |||
143 | # TAG: log_icap | ||
144 | # Remove this line. Use acls with icap_log directives to control icap logging | ||
145 | #Default: | ||
146 | # none | ||
147 | |||
148 | # TAG: ignore_ims_on_miss | ||
149 | # Remove this line. The HTTP/1.1 feature is now configured by 'cache_miss_revalidate'. | ||
150 | #Default: | ||
151 | # none | ||
152 | |||
153 | # TAG: chunked_request_body_max_size | ||
154 | # Remove this line. Squid is now HTTP/1.1 compliant. | ||
155 | #Default: | ||
156 | # none | ||
157 | |||
158 | # TAG: dns_v4_fallback | ||
159 | # Remove this line. Squid performs a 'Happy Eyeballs' algorithm, the 'fallback' algorithm is no longer relevant. | ||
160 | #Default: | ||
161 | # none | ||
162 | |||
163 | # TAG: emulate_httpd_log | ||
164 | # Replace this with an access_log directive using the format 'common' or 'combined'. | ||
165 | #Default: | ||
166 | # none | ||
167 | |||
168 | # TAG: forward_log | ||
169 | # Use a regular access.log with ACL limiting it to MISS events. | ||
170 | #Default: | ||
171 | # none | ||
172 | |||
173 | # TAG: ftp_list_width | ||
174 | # Remove this line. Configure FTP page display using the CSS controls in errorpages.css instead. | ||
175 | #Default: | ||
176 | # none | ||
177 | |||
178 | # TAG: ignore_expect_100 | ||
179 | # Remove this line. The HTTP/1.1 feature is now fully supported by default. | ||
180 | #Default: | ||
181 | # none | ||
182 | |||
183 | # TAG: log_fqdn | ||
184 | # Remove this option from your config. To log FQDN use %>A in the log format. | ||
185 | #Default: | ||
186 | # none | ||
187 | |||
188 | # TAG: log_ip_on_direct | ||
189 | # Remove this option from your config. To log server or peer names use %<A in the log format. | ||
190 | #Default: | ||
191 | # none | ||
192 | |||
193 | # TAG: maximum_single_addr_tries | ||
194 | # Replaced by connect_retries. The behaviour has changed, please read the documentation before altering. | ||
195 | #Default: | ||
196 | # none | ||
197 | |||
198 | # TAG: referer_log | ||
199 | # Replace this with an access_log directive using the format 'referrer'. | ||
200 | #Default: | ||
201 | # none | ||
202 | |||
203 | # TAG: update_headers | ||
204 | # Remove this line. The feature is supported by default in storage types where update is implemented. | ||
205 | #Default: | ||
206 | # none | ||
207 | |||
208 | # TAG: url_rewrite_concurrency | ||
209 | # Remove this line. Set the 'concurrency=' option of url_rewrite_children instead. | ||
210 | #Default: | ||
211 | # none | ||
212 | |||
213 | # TAG: useragent_log | ||
214 | # Replace this with an access_log directive using the format 'useragent'. | ||
215 | #Default: | ||
216 | # none | ||
217 | |||
218 | # TAG: dns_testnames | ||
219 | # Remove this line. DNS is no longer tested on startup. | ||
220 | #Default: | ||
221 | # none | ||
222 | |||
223 | # TAG: extension_methods | ||
224 | # Remove this line. All valid methods for HTTP are accepted by default. | ||
225 | #Default: | ||
226 | # none | ||
227 | |||
228 | # TAG: zero_buffers | ||
229 | #Default: | ||
230 | # none | ||
231 | |||
232 | # TAG: incoming_rate | ||
233 | #Default: | ||
234 | # none | ||
235 | |||
236 | # TAG: server_http11 | ||
237 | # Remove this line. HTTP/1.1 is supported by default. | ||
238 | #Default: | ||
239 | # none | ||
240 | |||
241 | # TAG: upgrade_http0.9 | ||
242 | # Remove this line. ICY/1.0 streaming protocol is supported by default. | ||
243 | #Default: | ||
244 | # none | ||
245 | |||
246 | # TAG: zph_local | ||
247 | # Alter these entries. Use the qos_flows directive instead. | ||
248 | #Default: | ||
249 | # none | ||
250 | |||
251 | # TAG: header_access | ||
252 | # Since squid-3.0 replace with request_header_access or reply_header_access | ||
253 | # depending on whether you wish to match client requests or server replies. | ||
254 | #Default: | ||
255 | # none | ||
256 | |||
257 | # TAG: httpd_accel_no_pmtu_disc | ||
258 | # Since squid-3.0 use the 'disable-pmtu-discovery' flag on http_port instead. | ||
259 | #Default: | ||
260 | # none | ||
261 | |||
262 | # TAG: wais_relay_host | ||
263 | # Replace this line with 'cache_peer' configuration. | ||
264 | #Default: | ||
265 | # none | ||
266 | |||
267 | # TAG: wais_relay_port | ||
268 | # Replace this line with 'cache_peer' configuration. | ||
269 | #Default: | ||
270 | # none | ||
271 | |||
272 | # OPTIONS FOR SMP | ||
273 | # ----------------------------------------------------------------------------- | ||
274 | |||
275 | # TAG: workers | ||
276 | # Number of main Squid processes or "workers" to fork and maintain. | ||
277 | # 0: "no daemon" mode, like running "squid -N ..." | ||
278 | # 1: "no SMP" mode, start one main Squid process daemon (default) | ||
279 | # N: start N main Squid process daemons (i.e., SMP mode) | ||
280 | # | ||
281 | # In SMP mode, each worker does nearly all what a single Squid daemon | ||
282 | # does (e.g., listen on http_port and forward HTTP requests). | ||
283 | #Default: | ||
284 | # SMP support disabled. | ||
285 | |||
286 | # TAG: cpu_affinity_map | ||
287 | # Usage: cpu_affinity_map process_numbers=P1,P2,... cores=C1,C2,... | ||
288 | # | ||
289 | # Sets 1:1 mapping between Squid processes and CPU cores. For example, | ||
290 | # | ||
291 | # cpu_affinity_map process_numbers=1,2,3,4 cores=1,3,5,7 | ||
292 | # | ||
293 | # affects processes 1 through 4 only and places them on the first | ||
294 | # four even cores, starting with core #1. | ||
295 | # | ||
296 | # CPU cores are numbered starting from 1. Requires support for | ||
297 | # sched_getaffinity(2) and sched_setaffinity(2) system calls. | ||
298 | # | ||
299 | # Multiple cpu_affinity_map options are merged. | ||
300 | # | ||
301 | # See also: workers | ||
302 | #Default: | ||
303 | # Let operating system decide. | ||
304 | |||
305 | # OPTIONS FOR AUTHENTICATION | ||
306 | # ----------------------------------------------------------------------------- | ||
307 | |||
308 | # TAG: auth_param | ||
309 | # This is used to define parameters for the various authentication | ||
310 | # schemes supported by Squid. | ||
311 | # | ||
312 | # format: auth_param scheme parameter [setting] | ||
313 | # | ||
314 | # The order in which authentication schemes are presented to the client is | ||
315 | # dependent on the order the scheme first appears in config file. IE | ||
316 | # has a bug (it's not RFC 2617 compliant) in that it will use the basic | ||
317 | # scheme if basic is the first entry presented, even if more secure | ||
318 | # schemes are presented. For now use the order in the recommended | ||
319 | # settings section below. If other browsers have difficulties (don't | ||
320 | # recognize the schemes offered even if you are using basic) either | ||
321 | # put basic first, or disable the other schemes (by commenting out their | ||
322 | # program entry). | ||
323 | # | ||
324 | # Once an authentication scheme is fully configured, it can only be | ||
325 | # shutdown by shutting squid down and restarting. Changes can be made on | ||
326 | # the fly and activated with a reconfigure. I.E. You can change to a | ||
327 | # different helper, but not unconfigure the helper completely. | ||
328 | # | ||
329 | # Please note that while this directive defines how Squid processes | ||
330 | # authentication it does not automatically activate authentication. | ||
331 | # To use authentication you must in addition make use of ACLs based | ||
332 | # on login name in http_access (proxy_auth, proxy_auth_regex or | ||
333 | # external with %LOGIN used in the format tag). The browser will be | ||
334 | # challenged for authentication on the first such acl encountered | ||
335 | # in http_access processing and will also be re-challenged for new | ||
336 | # login credentials if the request is being denied by a proxy_auth | ||
337 | # type acl. | ||
338 | # | ||
339 | # WARNING: authentication can't be used in a transparently intercepting | ||
340 | # proxy as the client then thinks it is talking to an origin server and | ||
341 | # not the proxy. This is a limitation of bending the TCP/IP protocol to | ||
342 | # transparently intercepting port 80, not a limitation in Squid. | ||
343 | # Ports flagged 'transparent', 'intercept', or 'tproxy' have | ||
344 | # authentication disabled. | ||
345 | # | ||
346 | # === Parameters common to all schemes. === | ||
347 | # | ||
348 | # "program" cmdline | ||
349 | # Specifies the command for the external authenticator. | ||
350 | # | ||
351 | # By default, each authentication scheme is not used unless a | ||
352 | # program is specified. | ||
353 | # | ||
354 | # See http://wiki.squid-cache.org/Features/AddonHelpers for | ||
355 | # more details on helper operations and creating your own. | ||
356 | # | ||
357 | # "key_extras" format | ||
358 | # Specifies a string to be append to request line format for | ||
359 | # the authentication helper. "Quoted" format values may contain | ||
360 | # spaces and logformat %macros. In theory, any logformat %macro | ||
361 | # can be used. In practice, a %macro expands as a dash (-) if | ||
362 | # the helper request is sent before the required macro | ||
363 | # information is available to Squid. | ||
364 | # | ||
365 | # By default, Squid uses request formats provided in | ||
366 | # scheme-specific examples below (search for %credentials). | ||
367 | # | ||
368 | # The expanded key_extras value is added to the Squid credentials | ||
369 | # cache and, hence, will affect authentication. It can be used to | ||
370 | # autenticate different users with identical user names (e.g., | ||
371 | # when user authentication depends on http_port). | ||
372 | # | ||
373 | # Avoid adding frequently changing information to key_extras. For | ||
374 | # example, if you add user source IP, and it changes frequently | ||
375 | # in your environment, then max_user_ip ACL is going to treat | ||
376 | # every user+IP combination as a unique "user", breaking the ACL | ||
377 | # and wasting a lot of memory on those user records. It will also | ||
378 | # force users to authenticate from scratch whenever their IP | ||
379 | # changes. | ||
380 | # | ||
381 | # "realm" string | ||
382 | # Specifies the protection scope (aka realm name) which is to be | ||
383 | # reported to the client for the authentication scheme. It is | ||
384 | # commonly part of the text the user will see when prompted for | ||
385 | # their username and password. | ||
386 | # | ||
387 | # For Basic the default is "Squid proxy-caching web server". | ||
388 | # For Digest there is no default, this parameter is mandatory. | ||
389 | # For NTLM and Negotiate this parameter is ignored. | ||
390 | # | ||
391 | # "children" numberofchildren [startup=N] [idle=N] [concurrency=N] | ||
392 | # | ||
393 | # The maximum number of authenticator processes to spawn. If | ||
394 | # you start too few Squid will have to wait for them to process | ||
395 | # a backlog of credential verifications, slowing it down. When | ||
396 | # password verifications are done via a (slow) network you are | ||
397 | # likely to need lots of authenticator processes. | ||
398 | # | ||
399 | # The startup= and idle= options permit some skew in the exact | ||
400 | # amount run. A minimum of startup=N will begin during startup | ||
401 | # and reconfigure. Squid will start more in groups of up to | ||
402 | # idle=N in an attempt to meet traffic needs and to keep idle=N | ||
403 | # free above those traffic needs up to the maximum. | ||
404 | # | ||
405 | # The concurrency= option sets the number of concurrent requests | ||
406 | # the helper can process. The default of 0 is used for helpers | ||
407 | # who only supports one request at a time. Setting this to a | ||
408 | # number greater than 0 changes the protocol used to include a | ||
409 | # channel ID field first on the request/response line, allowing | ||
410 | # multiple requests to be sent to the same helper in parallel | ||
411 | # without waiting for the response. | ||
412 | # | ||
413 | # Concurrency must not be set unless it's known the helper | ||
414 | # supports the input format with channel-ID fields. | ||
415 | # | ||
416 | # NOTE: NTLM and Negotiate schemes do not support concurrency | ||
417 | # in the Squid code module even though some helpers can. | ||
418 | # | ||
419 | # | ||
420 | # | ||
421 | # === Example Configuration === | ||
422 | # | ||
423 | # This configuration displays the recommended authentication scheme | ||
424 | # order from most to least secure with recommended minimum configuration | ||
425 | # settings for each scheme: | ||
426 | # | ||
427 | ##auth_param negotiate program <uncomment and complete this line to activate> | ||
428 | ##auth_param negotiate children 20 startup=0 idle=1 | ||
429 | ##auth_param negotiate keep_alive on | ||
430 | ## | ||
431 | ##auth_param digest program <uncomment and complete this line to activate> | ||
432 | ##auth_param digest children 20 startup=0 idle=1 | ||
433 | ##auth_param digest realm Squid proxy-caching web server | ||
434 | ##auth_param digest nonce_garbage_interval 5 minutes | ||
435 | ##auth_param digest nonce_max_duration 30 minutes | ||
436 | ##auth_param digest nonce_max_count 50 | ||
437 | ## | ||
438 | ##auth_param ntlm program <uncomment and complete this line to activate> | ||
439 | ##auth_param ntlm children 20 startup=0 idle=1 | ||
440 | ##auth_param ntlm keep_alive on | ||
441 | ## | ||
442 | ##auth_param basic program <uncomment and complete this line> | ||
443 | ##auth_param basic children 5 startup=5 idle=1 | ||
444 | ##auth_param basic realm Squid proxy-caching web server | ||
445 | ##auth_param basic credentialsttl 2 hours | ||
446 | #Default: | ||
447 | # none | ||
448 | |||
449 | # TAG: authenticate_cache_garbage_interval | ||
450 | # The time period between garbage collection across the username cache. | ||
451 | # This is a trade-off between memory utilization (long intervals - say | ||
452 | # 2 days) and CPU (short intervals - say 1 minute). Only change if you | ||
453 | # have good reason to. | ||
454 | #Default: | ||
455 | # authenticate_cache_garbage_interval 1 hour | ||
456 | |||
457 | # TAG: authenticate_ttl | ||
458 | # The time a user & their credentials stay in the logged in | ||
459 | # user cache since their last request. When the garbage | ||
460 | # interval passes, all user credentials that have passed their | ||
461 | # TTL are removed from memory. | ||
462 | #Default: | ||
463 | # authenticate_ttl 1 hour | ||
464 | |||
465 | # TAG: authenticate_ip_ttl | ||
466 | # If you use proxy authentication and the 'max_user_ip' ACL, | ||
467 | # this directive controls how long Squid remembers the IP | ||
468 | # addresses associated with each user. Use a small value | ||
469 | # (e.g., 60 seconds) if your users might change addresses | ||
470 | # quickly, as is the case with dialup. You might be safe | ||
471 | # using a larger value (e.g., 2 hours) in a corporate LAN | ||
472 | # environment with relatively static address assignments. | ||
473 | #Default: | ||
474 | # authenticate_ip_ttl 1 second | ||
475 | |||
476 | # ACCESS CONTROLS | ||
477 | # ----------------------------------------------------------------------------- | ||
478 | |||
479 | # TAG: external_acl_type | ||
480 | # This option defines external acl classes using a helper program | ||
481 | # to look up the status | ||
482 | # | ||
483 | # external_acl_type name [options] FORMAT.. /path/to/helper [helper arguments..] | ||
484 | # | ||
485 | # Options: | ||
486 | # | ||
487 | # ttl=n TTL in seconds for cached results (defaults to 3600 | ||
488 | # for 1 hour) | ||
489 | # | ||
490 | # negative_ttl=n | ||
491 | # TTL for cached negative lookups (default same | ||
492 | # as ttl) | ||
493 | # | ||
494 | # grace=n Percentage remaining of TTL where a refresh of a | ||
495 | # cached entry should be initiated without needing to | ||
496 | # wait for a new reply. (default is for no grace period) | ||
497 | # | ||
498 | # cache=n The maximum number of entries in the result cache. The | ||
499 | # default limit is 262144 entries. Each cache entry usually | ||
500 | # consumes at least 256 bytes. Squid currently does not remove | ||
501 | # expired cache entries until the limit is reached, so a proxy | ||
502 | # will sooner or later reach the limit. The expanded FORMAT | ||
503 | # value is used as the cache key, so if the details in FORMAT | ||
504 | # are highly variable, a larger cache may be needed to produce | ||
505 | # reduction in helper load. | ||
506 | # | ||
507 | # children-max=n | ||
508 | # Maximum number of acl helper processes spawned to service | ||
509 | # external acl lookups of this type. (default 5) | ||
510 | # | ||
511 | # children-startup=n | ||
512 | # Minimum number of acl helper processes to spawn during | ||
513 | # startup and reconfigure to service external acl lookups | ||
514 | # of this type. (default 0) | ||
515 | # | ||
516 | # children-idle=n | ||
517 | # Number of acl helper processes to keep ahead of traffic | ||
518 | # loads. Squid will spawn this many at once whenever load | ||
519 | # rises above the capabilities of existing processes. | ||
520 | # Up to the value of children-max. (default 1) | ||
521 | # | ||
522 | # concurrency=n concurrency level per process. Only used with helpers | ||
523 | # capable of processing more than one query at a time. | ||
524 | # | ||
525 | # protocol=2.5 Compatibility mode for Squid-2.5 external acl helpers. | ||
526 | # | ||
527 | # ipv4 / ipv6 IP protocol used to communicate with this helper. | ||
528 | # The default is to auto-detect IPv6 and use it when available. | ||
529 | # | ||
530 | # | ||
531 | # FORMAT specifications | ||
532 | # | ||
533 | # %LOGIN Authenticated user login name | ||
534 | # %un A user name. Expands to the first available name | ||
535 | # from the following list of information sources: | ||
536 | # - authenticated user name, like %ul or %LOGIN | ||
537 | # - user name sent by an external ACL, like %EXT_USER | ||
538 | # - SSL client name, like %us in logformat | ||
539 | # - ident user name, like %ui in logformat | ||
540 | # %EXT_USER Username from previous external acl | ||
541 | # %EXT_LOG Log details from previous external acl | ||
542 | # %EXT_TAG Tag from previous external acl | ||
543 | # %IDENT Ident user name | ||
544 | # %SRC Client IP | ||
545 | # %SRCPORT Client source port | ||
546 | # %URI Requested URI | ||
547 | # %DST Requested host | ||
548 | # %PROTO Requested URL scheme | ||
549 | # %PORT Requested port | ||
550 | # %PATH Requested URL path | ||
551 | # %METHOD Request method | ||
552 | # %MYADDR Squid interface address | ||
553 | # %MYPORT Squid http_port number | ||
554 | # %PATH Requested URL-path (including query-string if any) | ||
555 | # %USER_CERT SSL User certificate in PEM format | ||
556 | # %USER_CERTCHAIN SSL User certificate chain in PEM format | ||
557 | # %USER_CERT_xx SSL User certificate subject attribute xx | ||
558 | # %USER_CA_CERT_xx SSL User certificate issuer attribute xx | ||
559 | # %ssl::>sni SSL client SNI sent to Squid | ||
560 | # %ssl::<cert_subject SSL server certificate DN | ||
561 | # %ssl::<cert_issuer SSL server certificate issuer DN | ||
562 | # | ||
563 | # %>{Header} HTTP request header "Header" | ||
564 | # %>{Hdr:member} | ||
565 | # HTTP request header "Hdr" list member "member" | ||
566 | # %>{Hdr:;member} | ||
567 | # HTTP request header list member using ; as | ||
568 | # list separator. ; can be any non-alphanumeric | ||
569 | # character. | ||
570 | # | ||
571 | # %<{Header} HTTP reply header "Header" | ||
572 | # %<{Hdr:member} | ||
573 | # HTTP reply header "Hdr" list member "member" | ||
574 | # %<{Hdr:;member} | ||
575 | # HTTP reply header list member using ; as | ||
576 | # list separator. ; can be any non-alphanumeric | ||
577 | # character. | ||
578 | # | ||
579 | # %ACL The name of the ACL being tested. | ||
580 | # %DATA The ACL arguments. If not used then any arguments | ||
581 | # is automatically added at the end of the line | ||
582 | # sent to the helper. | ||
583 | # NOTE: this will encode the arguments as one token, | ||
584 | # whereas the default will pass each separately. | ||
585 | # | ||
586 | # %% The percent sign. Useful for helpers which need | ||
587 | # an unchanging input format. | ||
588 | # | ||
589 | # | ||
590 | # General request syntax: | ||
591 | # | ||
592 | # [channel-ID] FORMAT-values [acl-values ...] | ||
593 | # | ||
594 | # | ||
595 | # FORMAT-values consists of transaction details expanded with | ||
596 | # whitespace separation per the config file FORMAT specification | ||
597 | # using the FORMAT macros listed above. | ||
598 | # | ||
599 | # acl-values consists of any string specified in the referencing | ||
600 | # config 'acl ... external' line. see the "acl external" directive. | ||
601 | # | ||
602 | # Request values sent to the helper are URL escaped to protect | ||
603 | # each value in requests against whitespaces. | ||
604 | # | ||
605 | # If using protocol=2.5 then the request sent to the helper is not | ||
606 | # URL escaped to protect against whitespace. | ||
607 | # | ||
608 | # NOTE: protocol=3.0 is deprecated as no longer necessary. | ||
609 | # | ||
610 | # When using the concurrency= option the protocol is changed by | ||
611 | # introducing a query channel tag in front of the request/response. | ||
612 | # The query channel tag is a number between 0 and concurrency-1. | ||
613 | # This value must be echoed back unchanged to Squid as the first part | ||
614 | # of the response relating to its request. | ||
615 | # | ||
616 | # | ||
617 | # The helper receives lines expanded per the above format specification | ||
618 | # and for each input line returns 1 line starting with OK/ERR/BH result | ||
619 | # code and optionally followed by additional keywords with more details. | ||
620 | # | ||
621 | # | ||
622 | # General result syntax: | ||
623 | # | ||
624 | # [channel-ID] result keyword=value ... | ||
625 | # | ||
626 | # Result consists of one of the codes: | ||
627 | # | ||
628 | # OK | ||
629 | # the ACL test produced a match. | ||
630 | # | ||
631 | # ERR | ||
632 | # the ACL test does not produce a match. | ||
633 | # | ||
634 | # BH | ||
635 | # An internal error occurred in the helper, preventing | ||
636 | # a result being identified. | ||
637 | # | ||
638 | # The meaning of 'a match' is determined by your squid.conf | ||
639 | # access control configuration. See the Squid wiki for details. | ||
640 | # | ||
641 | # Defined keywords: | ||
642 | # | ||
643 | # user= The users name (login) | ||
644 | # | ||
645 | # password= The users password (for login= cache_peer option) | ||
646 | # | ||
647 | # message= Message describing the reason for this response. | ||
648 | # Available as %o in error pages. | ||
649 | # Useful on (ERR and BH results). | ||
650 | # | ||
651 | # tag= Apply a tag to a request. Only sets a tag once, | ||
652 | # does not alter existing tags. | ||
653 | # | ||
654 | # log= String to be logged in access.log. Available as | ||
655 | # %ea in logformat specifications. | ||
656 | # | ||
657 | # clt_conn_tag= Associates a TAG with the client TCP connection. | ||
658 | # Please see url_rewrite_program related documentation | ||
659 | # for this kv-pair. | ||
660 | # | ||
661 | # Any keywords may be sent on any response whether OK, ERR or BH. | ||
662 | # | ||
663 | # All response keyword values need to be a single token with URL | ||
664 | # escaping, or enclosed in double quotes (") and escaped using \ on | ||
665 | # any double quotes or \ characters within the value. The wrapping | ||
666 | # double quotes are removed before the value is interpreted by Squid. | ||
667 | # \r and \n are also replace by CR and LF. | ||
668 | # | ||
669 | # Some example key values: | ||
670 | # | ||
671 | # user=John%20Smith | ||
672 | # user="John Smith" | ||
673 | # user="J. \"Bob\" Smith" | ||
674 | #Default: | ||
675 | # none | ||
676 | |||
677 | # TAG: acl | ||
678 | # Defining an Access List | ||
679 | # | ||
680 | # Every access list definition must begin with an aclname and acltype, | ||
681 | # followed by either type-specific arguments or a quoted filename that | ||
682 | # they are read from. | ||
683 | # | ||
684 | # acl aclname acltype argument ... | ||
685 | # acl aclname acltype "file" ... | ||
686 | # | ||
687 | # When using "file", the file should contain one item per line. | ||
688 | # | ||
689 | # Some acl types supports options which changes their default behaviour. | ||
690 | # The available options are: | ||
691 | # | ||
692 | # -i,+i By default, regular expressions are CASE-SENSITIVE. To make them | ||
693 | # case-insensitive, use the -i option. To return case-sensitive | ||
694 | # use the +i option between patterns, or make a new ACL line | ||
695 | # without -i. | ||
696 | # | ||
697 | # -n Disable lookups and address type conversions. If lookup or | ||
698 | # conversion is required because the parameter type (IP or | ||
699 | # domain name) does not match the message address type (domain | ||
700 | # name or IP), then the ACL would immediately declare a mismatch | ||
701 | # without any warnings or lookups. | ||
702 | # | ||
703 | # -- Used to stop processing all options, in the case the first acl | ||
704 | # value has '-' character as first character (for example the '-' | ||
705 | # is a valid domain name) | ||
706 | # | ||
707 | # Some acl types require suspending the current request in order | ||
708 | # to access some external data source. | ||
709 | # Those which do are marked with the tag [slow], those which | ||
710 | # don't are marked as [fast]. | ||
711 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl | ||
712 | # for further information | ||
713 | # | ||
714 | # ***** ACL TYPES AVAILABLE ***** | ||
715 | # | ||
716 | # acl aclname src ip-address/mask ... # clients IP address [fast] | ||
717 | # acl aclname src addr1-addr2/mask ... # range of addresses [fast] | ||
718 | # acl aclname dst [-n] ip-address/mask ... # URL host's IP address [slow] | ||
719 | # acl aclname localip ip-address/mask ... # IP address the client connected to [fast] | ||
720 | # | ||
721 | # acl aclname arp mac-address ... (xx:xx:xx:xx:xx:xx notation) | ||
722 | # # [fast] | ||
723 | # # The 'arp' ACL code is not portable to all operating systems. | ||
724 | # # It works on Linux, Solaris, Windows, FreeBSD, and some other | ||
725 | # # BSD variants. | ||
726 | # # | ||
727 | # # NOTE: Squid can only determine the MAC/EUI address for IPv4 | ||
728 | # # clients that are on the same subnet. If the client is on a | ||
729 | # # different subnet, then Squid cannot find out its address. | ||
730 | # # | ||
731 | # # NOTE 2: IPv6 protocol does not contain ARP. MAC/EUI is either | ||
732 | # # encoded directly in the IPv6 address or not available. | ||
733 | # | ||
734 | # acl aclname srcdomain .foo.com ... | ||
735 | # # reverse lookup, from client IP [slow] | ||
736 | # acl aclname dstdomain [-n] .foo.com ... | ||
737 | # # Destination server from URL [fast] | ||
738 | # acl aclname srcdom_regex [-i] \.foo\.com ... | ||
739 | # # regex matching client name [slow] | ||
740 | # acl aclname dstdom_regex [-n] [-i] \.foo\.com ... | ||
741 | # # regex matching server [fast] | ||
742 | # # | ||
743 | # # For dstdomain and dstdom_regex a reverse lookup is tried if a IP | ||
744 | # # based URL is used and no match is found. The name "none" is used | ||
745 | # # if the reverse lookup fails. | ||
746 | # | ||
747 | # acl aclname src_as number ... | ||
748 | # acl aclname dst_as number ... | ||
749 | # # [fast] | ||
750 | # # Except for access control, AS numbers can be used for | ||
751 | # # routing of requests to specific caches. Here's an | ||
752 | # # example for routing all requests for AS#1241 and only | ||
753 | # # those to mycache.mydomain.net: | ||
754 | # # acl asexample dst_as 1241 | ||
755 | # # cache_peer_access mycache.mydomain.net allow asexample | ||
756 | # # cache_peer_access mycache_mydomain.net deny all | ||
757 | # | ||
758 | # acl aclname peername myPeer ... | ||
759 | # # [fast] | ||
760 | # # match against a named cache_peer entry | ||
761 | # # set unique name= on cache_peer lines for reliable use. | ||
762 | # | ||
763 | # acl aclname time [day-abbrevs] [h1:m1-h2:m2] | ||
764 | # # [fast] | ||
765 | # # day-abbrevs: | ||
766 | # # S - Sunday | ||
767 | # # M - Monday | ||
768 | # # T - Tuesday | ||
769 | # # W - Wednesday | ||
770 | # # H - Thursday | ||
771 | # # F - Friday | ||
772 | # # A - Saturday | ||
773 | # # h1:m1 must be less than h2:m2 | ||
774 | # | ||
775 | # acl aclname url_regex [-i] ^http:// ... | ||
776 | # # regex matching on whole URL [fast] | ||
777 | # acl aclname urllogin [-i] [^a-zA-Z0-9] ... | ||
778 | # # regex matching on URL login field | ||
779 | # acl aclname urlpath_regex [-i] \.gif$ ... | ||
780 | # # regex matching on URL path [fast] | ||
781 | # | ||
782 | # acl aclname port 80 70 21 0-1024... # destination TCP port [fast] | ||
783 | # # ranges are alloed | ||
784 | # acl aclname localport 3128 ... # TCP port the client connected to [fast] | ||
785 | # # NP: for interception mode this is usually '80' | ||
786 | # | ||
787 | # acl aclname myportname 3128 ... # *_port name [fast] | ||
788 | # | ||
789 | # acl aclname proto HTTP FTP ... # request protocol [fast] | ||
790 | # | ||
791 | # acl aclname method GET POST ... # HTTP request method [fast] | ||
792 | # | ||
793 | # acl aclname http_status 200 301 500- 400-403 ... | ||
794 | # # status code in reply [fast] | ||
795 | # | ||
796 | # acl aclname browser [-i] regexp ... | ||
797 | # # pattern match on User-Agent header (see also req_header below) [fast] | ||
798 | # | ||
799 | # acl aclname referer_regex [-i] regexp ... | ||
800 | # # pattern match on Referer header [fast] | ||
801 | # # Referer is highly unreliable, so use with care | ||
802 | # | ||
803 | # acl aclname ident username ... | ||
804 | # acl aclname ident_regex [-i] pattern ... | ||
805 | # # string match on ident output [slow] | ||
806 | # # use REQUIRED to accept any non-null ident. | ||
807 | # | ||
808 | # acl aclname proxy_auth [-i] username ... | ||
809 | # acl aclname proxy_auth_regex [-i] pattern ... | ||
810 | # # perform http authentication challenge to the client and match against | ||
811 | # # supplied credentials [slow] | ||
812 | # # | ||
813 | # # takes a list of allowed usernames. | ||
814 | # # use REQUIRED to accept any valid username. | ||
815 | # # | ||
816 | # # Will use proxy authentication in forward-proxy scenarios, and plain | ||
817 | # # http authenticaiton in reverse-proxy scenarios | ||
818 | # # | ||
819 | # # NOTE: when a Proxy-Authentication header is sent but it is not | ||
820 | # # needed during ACL checking the username is NOT logged | ||
821 | # # in access.log. | ||
822 | # # | ||
823 | # # NOTE: proxy_auth requires a EXTERNAL authentication program | ||
824 | # # to check username/password combinations (see | ||
825 | # # auth_param directive). | ||
826 | # # | ||
827 | # # NOTE: proxy_auth can't be used in a transparent/intercepting proxy | ||
828 | # # as the browser needs to be configured for using a proxy in order | ||
829 | # # to respond to proxy authentication. | ||
830 | # | ||
831 | # acl aclname snmp_community string ... | ||
832 | # # A community string to limit access to your SNMP Agent [fast] | ||
833 | # # Example: | ||
834 | # # | ||
835 | # # acl snmppublic snmp_community public | ||
836 | # | ||
837 | # acl aclname maxconn number | ||
838 | # # This will be matched when the client's IP address has | ||
839 | # # more than <number> TCP connections established. [fast] | ||
840 | # # NOTE: This only measures direct TCP links so X-Forwarded-For | ||
841 | # # indirect clients are not counted. | ||
842 | # | ||
843 | # acl aclname max_user_ip [-s] number | ||
844 | # # This will be matched when the user attempts to log in from more | ||
845 | # # than <number> different ip addresses. The authenticate_ip_ttl | ||
846 | # # parameter controls the timeout on the ip entries. [fast] | ||
847 | # # If -s is specified the limit is strict, denying browsing | ||
848 | # # from any further IP addresses until the ttl has expired. Without | ||
849 | # # -s Squid will just annoy the user by "randomly" denying requests. | ||
850 | # # (the counter is reset each time the limit is reached and a | ||
851 | # # request is denied) | ||
852 | # # NOTE: in acceleration mode or where there is mesh of child proxies, | ||
853 | # # clients may appear to come from multiple addresses if they are | ||
854 | # # going through proxy farms, so a limit of 1 may cause user problems. | ||
855 | # | ||
856 | # acl aclname random probability | ||
857 | # # Pseudo-randomly match requests. Based on the probability given. | ||
858 | # # Probability may be written as a decimal (0.333), fraction (1/3) | ||
859 | # # or ratio of matches:non-matches (3:5). | ||
860 | # | ||
861 | # acl aclname req_mime_type [-i] mime-type ... | ||
862 | # # regex match against the mime type of the request generated | ||
863 | # # by the client. Can be used to detect file upload or some | ||
864 | # # types HTTP tunneling requests [fast] | ||
865 | # # NOTE: This does NOT match the reply. You cannot use this | ||
866 | # # to match the returned file type. | ||
867 | # | ||
868 | # acl aclname req_header header-name [-i] any\.regex\.here | ||
869 | # # regex match against any of the known request headers. May be | ||
870 | # # thought of as a superset of "browser", "referer" and "mime-type" | ||
871 | # # ACL [fast] | ||
872 | # | ||
873 | # acl aclname rep_mime_type [-i] mime-type ... | ||
874 | # # regex match against the mime type of the reply received by | ||
875 | # # squid. Can be used to detect file download or some | ||
876 | # # types HTTP tunneling requests. [fast] | ||
877 | # # NOTE: This has no effect in http_access rules. It only has | ||
878 | # # effect in rules that affect the reply data stream such as | ||
879 | # # http_reply_access. | ||
880 | # | ||
881 | # acl aclname rep_header header-name [-i] any\.regex\.here | ||
882 | # # regex match against any of the known reply headers. May be | ||
883 | # # thought of as a superset of "browser", "referer" and "mime-type" | ||
884 | # # ACLs [fast] | ||
885 | # | ||
886 | # acl aclname external class_name [arguments...] | ||
887 | # # external ACL lookup via a helper class defined by the | ||
888 | # # external_acl_type directive [slow] | ||
889 | # | ||
890 | # acl aclname user_cert attribute values... | ||
891 | # # match against attributes in a user SSL certificate | ||
892 | # # attribute is one of DN/C/O/CN/L/ST or a numerical OID [fast] | ||
893 | # | ||
894 | # acl aclname ca_cert attribute values... | ||
895 | # # match against attributes a users issuing CA SSL certificate | ||
896 | # # attribute is one of DN/C/O/CN/L/ST or a numerical OID [fast] | ||
897 | # | ||
898 | # acl aclname ext_user username ... | ||
899 | # acl aclname ext_user_regex [-i] pattern ... | ||
900 | # # string match on username returned by external acl helper [slow] | ||
901 | # # use REQUIRED to accept any non-null user name. | ||
902 | # | ||
903 | # acl aclname tag tagvalue ... | ||
904 | # # string match on tag returned by external acl helper [fast] | ||
905 | # # DEPRECATED. Only the first tag will match with this ACL. | ||
906 | # # Use the 'note' ACL instead for handling multiple tag values. | ||
907 | # | ||
908 | # acl aclname hier_code codename ... | ||
909 | # # string match against squid hierarchy code(s); [fast] | ||
910 | # # e.g., DIRECT, PARENT_HIT, NONE, etc. | ||
911 | # # | ||
912 | # # NOTE: This has no effect in http_access rules. It only has | ||
913 | # # effect in rules that affect the reply data stream such as | ||
914 | # # http_reply_access. | ||
915 | # | ||
916 | # acl aclname note name [value ...] | ||
917 | # # match transaction annotation [fast] | ||
918 | # # Without values, matches any annotation with a given name. | ||
919 | # # With value(s), matches any annotation with a given name that | ||
920 | # # also has one of the given values. | ||
921 | # # Names and values are compared using a string equality test. | ||
922 | # # Annotation sources include note and adaptation_meta directives | ||
923 | # # as well as helper and eCAP responses. | ||
924 | # | ||
925 | # acl aclname adaptation_service service ... | ||
926 | # # Matches the name of any icap_service, ecap_service, | ||
927 | # # adaptation_service_set, or adaptation_service_chain that Squid | ||
928 | # # has used (or attempted to use) for the master transaction. | ||
929 | # # This ACL must be defined after the corresponding adaptation | ||
930 | # # service is named in squid.conf. This ACL is usable with | ||
931 | # # adaptation_meta because it starts matching immediately after | ||
932 | # # the service has been selected for adaptation. | ||
933 | # | ||
934 | # acl aclname any-of acl1 acl2 ... | ||
935 | # # match any one of the acls [fast or slow] | ||
936 | # # The first matching ACL stops further ACL evaluation. | ||
937 | # # | ||
938 | # # ACLs from multiple any-of lines with the same name are ORed. | ||
939 | # # For example, A = (a1 or a2) or (a3 or a4) can be written as | ||
940 | # # acl A any-of a1 a2 | ||
941 | # # acl A any-of a3 a4 | ||
942 | # # | ||
943 | # # This group ACL is fast if all evaluated ACLs in the group are fast | ||
944 | # # and slow otherwise. | ||
945 | # | ||
946 | # acl aclname all-of acl1 acl2 ... | ||
947 | # # match all of the acls [fast or slow] | ||
948 | # # The first mismatching ACL stops further ACL evaluation. | ||
949 | # # | ||
950 | # # ACLs from multiple all-of lines with the same name are ORed. | ||
951 | # # For example, B = (b1 and b2) or (b3 and b4) can be written as | ||
952 | # # acl B all-of b1 b2 | ||
953 | # # acl B all-of b3 b4 | ||
954 | # # | ||
955 | # # This group ACL is fast if all evaluated ACLs in the group are fast | ||
956 | # # and slow otherwise. | ||
957 | # | ||
958 | # Examples: | ||
959 | # acl macaddress arp 09:00:2b:23:45:67 | ||
960 | # acl myexample dst_as 1241 | ||
961 | # acl password proxy_auth REQUIRED | ||
962 | # acl fileupload req_mime_type -i ^multipart/form-data$ | ||
963 | # acl javascript rep_mime_type -i ^application/x-javascript$ | ||
964 | # | ||
965 | #Default: | ||
966 | # ACLs all, manager, localhost, and to_localhost are predefined. | ||
967 | # | ||
968 | # | ||
969 | # Recommended minimum configuration: | ||
970 | # | ||
971 | |||
972 | # Example rule allowing access from your local networks. | ||
973 | # Adapt to list your (internal) IP networks from where browsing | ||
974 | # should be allowed | ||
975 | acl localnet src 10.0.0.0/8 # RFC1918 possible internal network | ||
976 | acl localnet src 172.16.0.0/12 # RFC1918 possible internal network | ||
977 | acl localnet src 192.168.0.0/16 # RFC1918 possible internal network | ||
978 | acl localnet src fc00::/7 # RFC 4193 local private network range | ||
979 | acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines | ||
980 | |||
981 | acl SSL_ports port 443 | ||
982 | acl Safe_ports port 80 # http | ||
983 | acl Safe_ports port 21 # ftp | ||
984 | acl Safe_ports port 443 # https | ||
985 | acl Safe_ports port 70 # gopher | ||
986 | acl Safe_ports port 210 # wais | ||
987 | acl Safe_ports port 1025-65535 # unregistered ports | ||
988 | acl Safe_ports port 280 # http-mgmt | ||
989 | acl Safe_ports port 488 # gss-http | ||
990 | acl Safe_ports port 591 # filemaker | ||
991 | acl Safe_ports port 777 # multiling http | ||
992 | acl CONNECT method CONNECT | ||
993 | |||
994 | # TAG: proxy_protocol_access | ||
995 | # Determine which client proxies can be trusted to provide correct | ||
996 | # information regarding real client IP address using PROXY protocol. | ||
997 | # | ||
998 | # Requests may pass through a chain of several other proxies | ||
999 | # before reaching us. The original source details may by sent in: | ||
1000 | # * HTTP message Forwarded header, or | ||
1001 | # * HTTP message X-Forwarded-For header, or | ||
1002 | # * PROXY protocol connection header. | ||
1003 | # | ||
1004 | # This directive is solely for validating new PROXY protocol | ||
1005 | # connections received from a port flagged with require-proxy-header. | ||
1006 | # It is checked only once after TCP connection setup. | ||
1007 | # | ||
1008 | # A deny match results in TCP connection closure. | ||
1009 | # | ||
1010 | # An allow match is required for Squid to permit the corresponding | ||
1011 | # TCP connection, before Squid even looks for HTTP request headers. | ||
1012 | # If there is an allow match, Squid starts using PROXY header information | ||
1013 | # to determine the source address of the connection for all future ACL | ||
1014 | # checks, logging, etc. | ||
1015 | # | ||
1016 | # SECURITY CONSIDERATIONS: | ||
1017 | # | ||
1018 | # Any host from which we accept client IP details can place | ||
1019 | # incorrect information in the relevant header, and Squid | ||
1020 | # will use the incorrect information as if it were the | ||
1021 | # source address of the request. This may enable remote | ||
1022 | # hosts to bypass any access control restrictions that are | ||
1023 | # based on the client's source addresses. | ||
1024 | # | ||
1025 | # This clause only supports fast acl types. | ||
1026 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1027 | #Default: | ||
1028 | # all TCP connections to ports with require-proxy-header will be denied | ||
1029 | |||
1030 | # TAG: follow_x_forwarded_for | ||
1031 | # Determine which client proxies can be trusted to provide correct | ||
1032 | # information regarding real client IP address. | ||
1033 | # | ||
1034 | # Requests may pass through a chain of several other proxies | ||
1035 | # before reaching us. The original source details may by sent in: | ||
1036 | # * HTTP message Forwarded header, or | ||
1037 | # * HTTP message X-Forwarded-For header, or | ||
1038 | # * PROXY protocol connection header. | ||
1039 | # | ||
1040 | # PROXY protocol connections are controlled by the proxy_protocol_access | ||
1041 | # directive which is checked before this. | ||
1042 | # | ||
1043 | # If a request reaches us from a source that is allowed by this | ||
1044 | # directive, then we trust the information it provides regarding | ||
1045 | # the IP of the client it received from (if any). | ||
1046 | # | ||
1047 | # For the purpose of ACLs used in this directive the src ACL type always | ||
1048 | # matches the address we are testing and srcdomain matches its rDNS. | ||
1049 | # | ||
1050 | # On each HTTP request Squid checks for X-Forwarded-For header fields. | ||
1051 | # If found the header values are iterated in reverse order and an allow | ||
1052 | # match is required for Squid to continue on to the next value. | ||
1053 | # The verification ends when a value receives a deny match, cannot be | ||
1054 | # tested, or there are no more values to test. | ||
1055 | # NOTE: Squid does not yet follow the Forwarded HTTP header. | ||
1056 | # | ||
1057 | # The end result of this process is an IP address that we will | ||
1058 | # refer to as the indirect client address. This address may | ||
1059 | # be treated as the client address for access control, ICAP, delay | ||
1060 | # pools and logging, depending on the acl_uses_indirect_client, | ||
1061 | # icap_uses_indirect_client, delay_pool_uses_indirect_client, | ||
1062 | # log_uses_indirect_client and tproxy_uses_indirect_client options. | ||
1063 | # | ||
1064 | # This clause only supports fast acl types. | ||
1065 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1066 | # | ||
1067 | # SECURITY CONSIDERATIONS: | ||
1068 | # | ||
1069 | # Any host from which we accept client IP details can place | ||
1070 | # incorrect information in the relevant header, and Squid | ||
1071 | # will use the incorrect information as if it were the | ||
1072 | # source address of the request. This may enable remote | ||
1073 | # hosts to bypass any access control restrictions that are | ||
1074 | # based on the client's source addresses. | ||
1075 | # | ||
1076 | # For example: | ||
1077 | # | ||
1078 | # acl localhost src 127.0.0.1 | ||
1079 | # acl my_other_proxy srcdomain .proxy.example.com | ||
1080 | # follow_x_forwarded_for allow localhost | ||
1081 | # follow_x_forwarded_for allow my_other_proxy | ||
1082 | #Default: | ||
1083 | # X-Forwarded-For header will be ignored. | ||
1084 | |||
1085 | # TAG: acl_uses_indirect_client on|off | ||
1086 | # Controls whether the indirect client address | ||
1087 | # (see follow_x_forwarded_for) is used instead of the | ||
1088 | # direct client address in acl matching. | ||
1089 | # | ||
1090 | # NOTE: maxconn ACL considers direct TCP links and indirect | ||
1091 | # clients will always have zero. So no match. | ||
1092 | #Default: | ||
1093 | # acl_uses_indirect_client on | ||
1094 | |||
1095 | # TAG: delay_pool_uses_indirect_client on|off | ||
1096 | # Controls whether the indirect client address | ||
1097 | # (see follow_x_forwarded_for) is used instead of the | ||
1098 | # direct client address in delay pools. | ||
1099 | #Default: | ||
1100 | # delay_pool_uses_indirect_client on | ||
1101 | |||
1102 | # TAG: log_uses_indirect_client on|off | ||
1103 | # Controls whether the indirect client address | ||
1104 | # (see follow_x_forwarded_for) is used instead of the | ||
1105 | # direct client address in the access log. | ||
1106 | #Default: | ||
1107 | # log_uses_indirect_client on | ||
1108 | |||
1109 | # TAG: tproxy_uses_indirect_client on|off | ||
1110 | # Controls whether the indirect client address | ||
1111 | # (see follow_x_forwarded_for) is used instead of the | ||
1112 | # direct client address when spoofing the outgoing client. | ||
1113 | # | ||
1114 | # This has no effect on requests arriving in non-tproxy | ||
1115 | # mode ports. | ||
1116 | # | ||
1117 | # SECURITY WARNING: Usage of this option is dangerous | ||
1118 | # and should not be used trivially. Correct configuration | ||
1119 | # of follow_x_forwarded_for with a limited set of trusted | ||
1120 | # sources is required to prevent abuse of your proxy. | ||
1121 | #Default: | ||
1122 | # tproxy_uses_indirect_client off | ||
1123 | |||
1124 | # TAG: spoof_client_ip | ||
1125 | # Control client IP address spoofing of TPROXY traffic based on | ||
1126 | # defined access lists. | ||
1127 | # | ||
1128 | # spoof_client_ip allow|deny [!]aclname ... | ||
1129 | # | ||
1130 | # If there are no "spoof_client_ip" lines present, the default | ||
1131 | # is to "allow" spoofing of any suitable request. | ||
1132 | # | ||
1133 | # Note that the cache_peer "no-tproxy" option overrides this ACL. | ||
1134 | # | ||
1135 | # This clause supports fast acl types. | ||
1136 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1137 | #Default: | ||
1138 | # Allow spoofing on all TPROXY traffic. | ||
1139 | |||
1140 | # TAG: http_access | ||
1141 | # Allowing or Denying access based on defined access lists | ||
1142 | # | ||
1143 | # To allow or deny a message received on an HTTP, HTTPS, or FTP port: | ||
1144 | # http_access allow|deny [!]aclname ... | ||
1145 | # | ||
1146 | # NOTE on default values: | ||
1147 | # | ||
1148 | # If there are no "access" lines present, the default is to deny | ||
1149 | # the request. | ||
1150 | # | ||
1151 | # If none of the "access" lines cause a match, the default is the | ||
1152 | # opposite of the last line in the list. If the last line was | ||
1153 | # deny, the default is allow. Conversely, if the last line | ||
1154 | # is allow, the default will be deny. For these reasons, it is a | ||
1155 | # good idea to have an "deny all" entry at the end of your access | ||
1156 | # lists to avoid potential confusion. | ||
1157 | # | ||
1158 | # This clause supports both fast and slow acl types. | ||
1159 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1160 | # | ||
1161 | #Default: | ||
1162 | # Deny, unless rules exist in squid.conf. | ||
1163 | # | ||
1164 | |||
1165 | # | ||
1166 | # Recommended minimum Access Permission configuration: | ||
1167 | # | ||
1168 | # Deny requests to certain unsafe ports | ||
1169 | http_access deny !Safe_ports | ||
1170 | |||
1171 | # Deny CONNECT to other than secure SSL ports | ||
1172 | http_access deny CONNECT !SSL_ports | ||
1173 | |||
1174 | # Only allow cachemgr access from localhost | ||
1175 | http_access allow localhost manager | ||
1176 | http_access deny manager | ||
1177 | |||
1178 | # We strongly recommend the following be uncommented to protect innocent | ||
1179 | # web applications running on the proxy server who think the only | ||
1180 | # one who can access services on "localhost" is a local user | ||
1181 | #http_access deny to_localhost | ||
1182 | |||
1183 | # | ||
1184 | # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS | ||
1185 | # | ||
1186 | |||
1187 | # Example rule allowing access from your local networks. | ||
1188 | # Adapt localnet in the ACL section to list your (internal) IP networks | ||
1189 | # from where browsing should be allowed | ||
1190 | http_access allow localnet | ||
1191 | http_access allow localhost | ||
1192 | |||
1193 | # And finally deny all other access to this proxy | ||
1194 | http_access deny all | ||
1195 | |||
1196 | # TAG: adapted_http_access | ||
1197 | # Allowing or Denying access based on defined access lists | ||
1198 | # | ||
1199 | # Essentially identical to http_access, but runs after redirectors | ||
1200 | # and ICAP/eCAP adaptation. Allowing access control based on their | ||
1201 | # output. | ||
1202 | # | ||
1203 | # If not set then only http_access is used. | ||
1204 | #Default: | ||
1205 | # Allow, unless rules exist in squid.conf. | ||
1206 | |||
1207 | # TAG: http_reply_access | ||
1208 | # Allow replies to client requests. This is complementary to http_access. | ||
1209 | # | ||
1210 | # http_reply_access allow|deny [!] aclname ... | ||
1211 | # | ||
1212 | # NOTE: if there are no access lines present, the default is to allow | ||
1213 | # all replies. | ||
1214 | # | ||
1215 | # If none of the access lines cause a match the opposite of the | ||
1216 | # last line will apply. Thus it is good practice to end the rules | ||
1217 | # with an "allow all" or "deny all" entry. | ||
1218 | # | ||
1219 | # This clause supports both fast and slow acl types. | ||
1220 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1221 | #Default: | ||
1222 | # Allow, unless rules exist in squid.conf. | ||
1223 | |||
1224 | # TAG: icp_access | ||
1225 | # Allowing or Denying access to the ICP port based on defined | ||
1226 | # access lists | ||
1227 | # | ||
1228 | # icp_access allow|deny [!]aclname ... | ||
1229 | # | ||
1230 | # NOTE: The default if no icp_access lines are present is to | ||
1231 | # deny all traffic. This default may cause problems with peers | ||
1232 | # using ICP. | ||
1233 | # | ||
1234 | # This clause only supports fast acl types. | ||
1235 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1236 | # | ||
1237 | ## Allow ICP queries from local networks only | ||
1238 | ##icp_access allow localnet | ||
1239 | ##icp_access deny all | ||
1240 | #Default: | ||
1241 | # Deny, unless rules exist in squid.conf. | ||
1242 | |||
1243 | # TAG: htcp_access | ||
1244 | # Allowing or Denying access to the HTCP port based on defined | ||
1245 | # access lists | ||
1246 | # | ||
1247 | # htcp_access allow|deny [!]aclname ... | ||
1248 | # | ||
1249 | # See also htcp_clr_access for details on access control for | ||
1250 | # cache purge (CLR) HTCP messages. | ||
1251 | # | ||
1252 | # NOTE: The default if no htcp_access lines are present is to | ||
1253 | # deny all traffic. This default may cause problems with peers | ||
1254 | # using the htcp option. | ||
1255 | # | ||
1256 | # This clause only supports fast acl types. | ||
1257 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1258 | # | ||
1259 | ## Allow HTCP queries from local networks only | ||
1260 | ##htcp_access allow localnet | ||
1261 | ##htcp_access deny all | ||
1262 | #Default: | ||
1263 | # Deny, unless rules exist in squid.conf. | ||
1264 | |||
1265 | # TAG: htcp_clr_access | ||
1266 | # Allowing or Denying access to purge content using HTCP based | ||
1267 | # on defined access lists. | ||
1268 | # See htcp_access for details on general HTCP access control. | ||
1269 | # | ||
1270 | # htcp_clr_access allow|deny [!]aclname ... | ||
1271 | # | ||
1272 | # This clause only supports fast acl types. | ||
1273 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1274 | # | ||
1275 | ## Allow HTCP CLR requests from trusted peers | ||
1276 | #acl htcp_clr_peer src 192.0.2.2 2001:DB8::2 | ||
1277 | #htcp_clr_access allow htcp_clr_peer | ||
1278 | #htcp_clr_access deny all | ||
1279 | #Default: | ||
1280 | # Deny, unless rules exist in squid.conf. | ||
1281 | |||
1282 | # TAG: miss_access | ||
1283 | # Determines whether network access is permitted when satisfying a request. | ||
1284 | # | ||
1285 | # For example; | ||
1286 | # to force your neighbors to use you as a sibling instead of | ||
1287 | # a parent. | ||
1288 | # | ||
1289 | # acl localclients src 192.0.2.0/24 2001:DB8::a:0/64 | ||
1290 | # miss_access deny !localclients | ||
1291 | # miss_access allow all | ||
1292 | # | ||
1293 | # This means only your local clients are allowed to fetch relayed/MISS | ||
1294 | # replies from the network and all other clients can only fetch cached | ||
1295 | # objects (HITs). | ||
1296 | # | ||
1297 | # The default for this setting allows all clients who passed the | ||
1298 | # http_access rules to relay via this proxy. | ||
1299 | # | ||
1300 | # This clause only supports fast acl types. | ||
1301 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1302 | #Default: | ||
1303 | # Allow, unless rules exist in squid.conf. | ||
1304 | |||
1305 | # TAG: ident_lookup_access | ||
1306 | # A list of ACL elements which, if matched, cause an ident | ||
1307 | # (RFC 931) lookup to be performed for this request. For | ||
1308 | # example, you might choose to always perform ident lookups | ||
1309 | # for your main multi-user Unix boxes, but not for your Macs | ||
1310 | # and PCs. By default, ident lookups are not performed for | ||
1311 | # any requests. | ||
1312 | # | ||
1313 | # To enable ident lookups for specific client addresses, you | ||
1314 | # can follow this example: | ||
1315 | # | ||
1316 | # acl ident_aware_hosts src 198.168.1.0/24 | ||
1317 | # ident_lookup_access allow ident_aware_hosts | ||
1318 | # ident_lookup_access deny all | ||
1319 | # | ||
1320 | # Only src type ACL checks are fully supported. A srcdomain | ||
1321 | # ACL might work at times, but it will not always provide | ||
1322 | # the correct result. | ||
1323 | # | ||
1324 | # This clause only supports fast acl types. | ||
1325 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
1326 | #Default: | ||
1327 | # Unless rules exist in squid.conf, IDENT is not fetched. | ||
1328 | |||
1329 | # TAG: reply_body_max_size size [acl acl...] | ||
1330 | # This option specifies the maximum size of a reply body. It can be | ||
1331 | # used to prevent users from downloading very large files, such as | ||
1332 | # MP3's and movies. When the reply headers are received, the | ||
1333 | # reply_body_max_size lines are processed, and the first line where | ||
1334 | # all (if any) listed ACLs are true is used as the maximum body size | ||
1335 | # for this reply. | ||
1336 | # | ||
1337 | # This size is checked twice. First when we get the reply headers, | ||
1338 | # we check the content-length value. If the content length value exists | ||
1339 | # and is larger than the allowed size, the request is denied and the | ||
1340 | # user receives an error message that says "the request or reply | ||
1341 | # is too large." If there is no content-length, and the reply | ||
1342 | # size exceeds this limit, the client's connection is just closed | ||
1343 | # and they will receive a partial reply. | ||
1344 | # | ||
1345 | # WARNING: downstream caches probably can not detect a partial reply | ||
1346 | # if there is no content-length header, so they will cache | ||
1347 | # partial responses and give them out as hits. You should NOT | ||
1348 | # use this option if you have downstream caches. | ||
1349 | # | ||
1350 | # WARNING: A maximum size smaller than the size of squid's error messages | ||
1351 | # will cause an infinite loop and crash squid. Ensure that the smallest | ||
1352 | # non-zero value you use is greater that the maximum header size plus | ||
1353 | # the size of your largest error page. | ||
1354 | # | ||
1355 | # If you set this parameter none (the default), there will be | ||
1356 | # no limit imposed. | ||
1357 | # | ||
1358 | # Configuration Format is: | ||
1359 | # reply_body_max_size SIZE UNITS [acl ...] | ||
1360 | # ie. | ||
1361 | # reply_body_max_size 10 MB | ||
1362 | # | ||
1363 | #Default: | ||
1364 | # No limit is applied. | ||
1365 | |||
1366 | # NETWORK OPTIONS | ||
1367 | # ----------------------------------------------------------------------------- | ||
1368 | |||
1369 | # TAG: http_port | ||
1370 | # Usage: port [mode] [options] | ||
1371 | # hostname:port [mode] [options] | ||
1372 | # 1.2.3.4:port [mode] [options] | ||
1373 | # | ||
1374 | # The socket addresses where Squid will listen for HTTP client | ||
1375 | # requests. You may specify multiple socket addresses. | ||
1376 | # There are three forms: port alone, hostname with port, and | ||
1377 | # IP address with port. If you specify a hostname or IP | ||
1378 | # address, Squid binds the socket to that specific | ||
1379 | # address. Most likely, you do not need to bind to a specific | ||
1380 | # address, so you can use the port number alone. | ||
1381 | # | ||
1382 | # If you are running Squid in accelerator mode, you | ||
1383 | # probably want to listen on port 80 also, or instead. | ||
1384 | # | ||
1385 | # The -a command line option may be used to specify additional | ||
1386 | # port(s) where Squid listens for proxy request. Such ports will | ||
1387 | # be plain proxy ports with no options. | ||
1388 | # | ||
1389 | # You may specify multiple socket addresses on multiple lines. | ||
1390 | # | ||
1391 | # Modes: | ||
1392 | # | ||
1393 | # intercept Support for IP-Layer NAT interception delivering | ||
1394 | # traffic to this Squid port. | ||
1395 | # NP: disables authentication on the port. | ||
1396 | # | ||
1397 | # tproxy Support Linux TPROXY (or BSD divert-to) with spoofing | ||
1398 | # of outgoing connections using the client IP address. | ||
1399 | # NP: disables authentication on the port. | ||
1400 | # | ||
1401 | # accel Accelerator / reverse proxy mode | ||
1402 | # | ||
1403 | # ssl-bump For each CONNECT request allowed by ssl_bump ACLs, | ||
1404 | # establish secure connection with the client and with | ||
1405 | # the server, decrypt HTTPS messages as they pass through | ||
1406 | # Squid, and treat them as unencrypted HTTP messages, | ||
1407 | # becoming the man-in-the-middle. | ||
1408 | # | ||
1409 | # The ssl_bump option is required to fully enable | ||
1410 | # bumping of CONNECT requests. | ||
1411 | # | ||
1412 | # Omitting the mode flag causes default forward proxy mode to be used. | ||
1413 | # | ||
1414 | # | ||
1415 | # Accelerator Mode Options: | ||
1416 | # | ||
1417 | # defaultsite=domainname | ||
1418 | # What to use for the Host: header if it is not present | ||
1419 | # in a request. Determines what site (not origin server) | ||
1420 | # accelerators should consider the default. | ||
1421 | # | ||
1422 | # no-vhost Disable using HTTP/1.1 Host header for virtual domain support. | ||
1423 | # | ||
1424 | # protocol= Protocol to reconstruct accelerated and intercepted | ||
1425 | # requests with. Defaults to HTTP/1.1 for http_port and | ||
1426 | # HTTPS/1.1 for https_port. | ||
1427 | # When an unsupported value is configured Squid will | ||
1428 | # produce a FATAL error. | ||
1429 | # Values: HTTP or HTTP/1.1, HTTPS or HTTPS/1.1 | ||
1430 | # | ||
1431 | # vport Virtual host port support. Using the http_port number | ||
1432 | # instead of the port passed on Host: headers. | ||
1433 | # | ||
1434 | # vport=NN Virtual host port support. Using the specified port | ||
1435 | # number instead of the port passed on Host: headers. | ||
1436 | # | ||
1437 | # act-as-origin | ||
1438 | # Act as if this Squid is the origin server. | ||
1439 | # This currently means generate new Date: and Expires: | ||
1440 | # headers on HIT instead of adding Age:. | ||
1441 | # | ||
1442 | # ignore-cc Ignore request Cache-Control headers. | ||
1443 | # | ||
1444 | # WARNING: This option violates HTTP specifications if | ||
1445 | # used in non-accelerator setups. | ||
1446 | # | ||
1447 | # allow-direct Allow direct forwarding in accelerator mode. Normally | ||
1448 | # accelerated requests are denied direct forwarding as if | ||
1449 | # never_direct was used. | ||
1450 | # | ||
1451 | # WARNING: this option opens accelerator mode to security | ||
1452 | # vulnerabilities usually only affecting in interception | ||
1453 | # mode. Make sure to protect forwarding with suitable | ||
1454 | # http_access rules when using this. | ||
1455 | # | ||
1456 | # | ||
1457 | # SSL Bump Mode Options: | ||
1458 | # In addition to these options ssl-bump requires TLS/SSL options. | ||
1459 | # | ||
1460 | # generate-host-certificates[=<on|off>] | ||
1461 | # Dynamically create SSL server certificates for the | ||
1462 | # destination hosts of bumped CONNECT requests.When | ||
1463 | # enabled, the cert and key options are used to sign | ||
1464 | # generated certificates. Otherwise generated | ||
1465 | # certificate will be selfsigned. | ||
1466 | # If there is a CA certificate lifetime of the generated | ||
1467 | # certificate equals lifetime of the CA certificate. If | ||
1468 | # generated certificate is selfsigned lifetime is three | ||
1469 | # years. | ||
1470 | # This option is disabled by default. See the ssl-bump | ||
1471 | # option above for more information. | ||
1472 | # | ||
1473 | # dynamic_cert_mem_cache_size=SIZE | ||
1474 | # Approximate total RAM size spent on cached generated | ||
1475 | # certificates. If set to zero, caching is disabled. | ||
1476 | # | ||
1477 | # TLS / SSL Options: | ||
1478 | # | ||
1479 | # cert= Path to SSL certificate (PEM format). | ||
1480 | # | ||
1481 | # key= Path to SSL private key file (PEM format) | ||
1482 | # if not specified, the certificate file is | ||
1483 | # assumed to be a combined certificate and | ||
1484 | # key file. | ||
1485 | # | ||
1486 | # version= The version of SSL/TLS supported | ||
1487 | # 1 automatic (default) | ||
1488 | # 2 SSLv2 only | ||
1489 | # 3 SSLv3 only | ||
1490 | # 4 TLSv1.0 only | ||
1491 | # 5 TLSv1.1 only | ||
1492 | # 6 TLSv1.2 only | ||
1493 | # | ||
1494 | # cipher= Colon separated list of supported ciphers. | ||
1495 | # NOTE: some ciphers such as EDH ciphers depend on | ||
1496 | # additional settings. If those settings are | ||
1497 | # omitted the ciphers may be silently ignored | ||
1498 | # by the OpenSSL library. | ||
1499 | # | ||
1500 | # options= Various SSL implementation options. The most important | ||
1501 | # being: | ||
1502 | # NO_SSLv2 Disallow the use of SSLv2 | ||
1503 | # NO_SSLv3 Disallow the use of SSLv3 | ||
1504 | # NO_TLSv1 Disallow the use of TLSv1.0 | ||
1505 | # NO_TLSv1_1 Disallow the use of TLSv1.1 | ||
1506 | # NO_TLSv1_2 Disallow the use of TLSv1.2 | ||
1507 | # SINGLE_DH_USE Always create a new key when using | ||
1508 | # temporary/ephemeral DH key exchanges | ||
1509 | # NO_TICKET Disables TLS tickets extension | ||
1510 | # | ||
1511 | # SINGLE_ECDH_USE | ||
1512 | # Enable ephemeral ECDH key exchange. | ||
1513 | # The adopted curve should be specified | ||
1514 | # using the tls-dh option. | ||
1515 | # | ||
1516 | # ALL Enable various bug workarounds | ||
1517 | # suggested as "harmless" by OpenSSL | ||
1518 | # Be warned that this reduces SSL/TLS | ||
1519 | # strength to some attacks. | ||
1520 | # See OpenSSL SSL_CTX_set_options documentation for a | ||
1521 | # complete list of options. | ||
1522 | # | ||
1523 | # clientca= File containing the list of CAs to use when | ||
1524 | # requesting a client certificate. | ||
1525 | # | ||
1526 | # cafile= File containing additional CA certificates to | ||
1527 | # use when verifying client certificates. If unset | ||
1528 | # clientca will be used. | ||
1529 | # | ||
1530 | # capath= Directory containing additional CA certificates | ||
1531 | # and CRL lists to use when verifying client certificates. | ||
1532 | # | ||
1533 | # crlfile= File of additional CRL lists to use when verifying | ||
1534 | # the client certificate, in addition to CRLs stored in | ||
1535 | # the capath. Implies VERIFY_CRL flag below. | ||
1536 | # | ||
1537 | # tls-dh=[curve:]file | ||
1538 | # File containing DH parameters for temporary/ephemeral DH key | ||
1539 | # exchanges, optionally prefixed by a curve for ephemeral ECDH | ||
1540 | # key exchanges. | ||
1541 | # See OpenSSL documentation for details on how to create the | ||
1542 | # DH parameter file. Supported curves for ECDH can be listed | ||
1543 | # using the "openssl ecparam -list_curves" command. | ||
1544 | # WARNING: EDH and EECDH ciphers will be silently disabled if | ||
1545 | # this option is not set. | ||
1546 | # | ||
1547 | # sslflags= Various flags modifying the use of SSL: | ||
1548 | # DELAYED_AUTH | ||
1549 | # Don't request client certificates | ||
1550 | # immediately, but wait until acl processing | ||
1551 | # requires a certificate (not yet implemented). | ||
1552 | # NO_DEFAULT_CA | ||
1553 | # Don't use the default CA lists built in | ||
1554 | # to OpenSSL. | ||
1555 | # NO_SESSION_REUSE | ||
1556 | # Don't allow for session reuse. Each connection | ||
1557 | # will result in a new SSL session. | ||
1558 | # VERIFY_CRL | ||
1559 | # Verify CRL lists when accepting client | ||
1560 | # certificates. | ||
1561 | # VERIFY_CRL_ALL | ||
1562 | # Verify CRL lists for all certificates in the | ||
1563 | # client certificate chain. | ||
1564 | # | ||
1565 | # sslcontext= SSL session ID context identifier. | ||
1566 | # | ||
1567 | # Other Options: | ||
1568 | # | ||
1569 | # connection-auth[=on|off] | ||
1570 | # use connection-auth=off to tell Squid to prevent | ||
1571 | # forwarding Microsoft connection oriented authentication | ||
1572 | # (NTLM, Negotiate and Kerberos) | ||
1573 | # | ||
1574 | # disable-pmtu-discovery= | ||
1575 | # Control Path-MTU discovery usage: | ||
1576 | # off lets OS decide on what to do (default). | ||
1577 | # transparent disable PMTU discovery when transparent | ||
1578 | # support is enabled. | ||
1579 | # always disable always PMTU discovery. | ||
1580 | # | ||
1581 | # In many setups of transparently intercepting proxies | ||
1582 | # Path-MTU discovery can not work on traffic towards the | ||
1583 | # clients. This is the case when the intercepting device | ||
1584 | # does not fully track connections and fails to forward | ||
1585 | # ICMP must fragment messages to the cache server. If you | ||
1586 | # have such setup and experience that certain clients | ||
1587 | # sporadically hang or never complete requests set | ||
1588 | # disable-pmtu-discovery option to 'transparent'. | ||
1589 | # | ||
1590 | # name= Specifies a internal name for the port. Defaults to | ||
1591 | # the port specification (port or addr:port) | ||
1592 | # | ||
1593 | # tcpkeepalive[=idle,interval,timeout] | ||
1594 | # Enable TCP keepalive probes of idle connections. | ||
1595 | # In seconds; idle is the initial time before TCP starts | ||
1596 | # probing the connection, interval how often to probe, and | ||
1597 | # timeout the time before giving up. | ||
1598 | # | ||
1599 | # require-proxy-header | ||
1600 | # Require PROXY protocol version 1 or 2 connections. | ||
1601 | # The proxy_protocol_access is required to whitelist | ||
1602 | # downstream proxies which can be trusted. | ||
1603 | # | ||
1604 | # If you run Squid on a dual-homed machine with an internal | ||
1605 | # and an external interface we recommend you to specify the | ||
1606 | # internal address:port in http_port. This way Squid will only be | ||
1607 | # visible on the internal address. | ||
1608 | # | ||
1609 | # | ||
1610 | |||
1611 | # Squid normally listens to port 3128 | ||
1612 | http_port 3128 | ||
1613 | |||
1614 | # TAG: https_port | ||
1615 | # Note: This option is only available if Squid is rebuilt with the | ||
1616 | # --with-openssl | ||
1617 | # | ||
1618 | # Usage: [ip:]port cert=certificate.pem [key=key.pem] [mode] [options...] | ||
1619 | # | ||
1620 | # The socket address where Squid will listen for client requests made | ||
1621 | # over TLS or SSL connections. Commonly referred to as HTTPS. | ||
1622 | # | ||
1623 | # This is most useful for situations where you are running squid in | ||
1624 | # accelerator mode and you want to do the SSL work at the accelerator level. | ||
1625 | # | ||
1626 | # You may specify multiple socket addresses on multiple lines, | ||
1627 | # each with their own SSL certificate and/or options. | ||
1628 | # | ||
1629 | # Modes: | ||
1630 | # | ||
1631 | # accel Accelerator / reverse proxy mode | ||
1632 | # | ||
1633 | # intercept Support for IP-Layer interception of | ||
1634 | # outgoing requests without browser settings. | ||
1635 | # NP: disables authentication and IPv6 on the port. | ||
1636 | # | ||
1637 | # tproxy Support Linux TPROXY for spoofing outgoing | ||
1638 | # connections using the client IP address. | ||
1639 | # NP: disables authentication and maybe IPv6 on the port. | ||
1640 | # | ||
1641 | # ssl-bump For each intercepted connection allowed by ssl_bump | ||
1642 | # ACLs, establish a secure connection with the client and with | ||
1643 | # the server, decrypt HTTPS messages as they pass through | ||
1644 | # Squid, and treat them as unencrypted HTTP messages, | ||
1645 | # becoming the man-in-the-middle. | ||
1646 | # | ||
1647 | # An "ssl_bump server-first" match is required to | ||
1648 | # fully enable bumping of intercepted SSL connections. | ||
1649 | # | ||
1650 | # Requires tproxy or intercept. | ||
1651 | # | ||
1652 | # Omitting the mode flag causes default forward proxy mode to be used. | ||
1653 | # | ||
1654 | # | ||
1655 | # See http_port for a list of generic options | ||
1656 | # | ||
1657 | # | ||
1658 | # SSL Options: | ||
1659 | # | ||
1660 | # cert= Path to SSL certificate (PEM format). | ||
1661 | # | ||
1662 | # key= Path to SSL private key file (PEM format) | ||
1663 | # if not specified, the certificate file is | ||
1664 | # assumed to be a combined certificate and | ||
1665 | # key file. | ||
1666 | # | ||
1667 | # version= The version of SSL/TLS supported | ||
1668 | # 1 automatic (default) | ||
1669 | # 2 SSLv2 only | ||
1670 | # 3 SSLv3 only | ||
1671 | # 4 TLSv1 only | ||
1672 | # | ||
1673 | # cipher= Colon separated list of supported ciphers. | ||
1674 | # | ||
1675 | # options= Various SSL engine options. The most important | ||
1676 | # being: | ||
1677 | # NO_SSLv2 Disallow the use of SSLv2 | ||
1678 | # NO_SSLv3 Disallow the use of SSLv3 | ||
1679 | # NO_TLSv1 Disallow the use of TLSv1 | ||
1680 | # | ||
1681 | # SINGLE_DH_USE Always create a new key when using | ||
1682 | # temporary/ephemeral DH key exchanges | ||
1683 | # | ||
1684 | # SINGLE_ECDH_USE | ||
1685 | # Enable ephemeral ECDH key exchange. | ||
1686 | # The adopted curve should be specified | ||
1687 | # using the tls-dh option. | ||
1688 | # | ||
1689 | # See src/ssl_support.c or OpenSSL SSL_CTX_set_options | ||
1690 | # documentation for a complete list of options. | ||
1691 | # | ||
1692 | # clientca= File containing the list of CAs to use when | ||
1693 | # requesting a client certificate. | ||
1694 | # | ||
1695 | # cafile= File containing additional CA certificates to | ||
1696 | # use when verifying client certificates. If unset | ||
1697 | # clientca will be used. | ||
1698 | # | ||
1699 | # capath= Directory containing additional CA certificates | ||
1700 | # and CRL lists to use when verifying client certificates. | ||
1701 | # | ||
1702 | # crlfile= File of additional CRL lists to use when verifying | ||
1703 | # the client certificate, in addition to CRLs stored in | ||
1704 | # the capath. Implies VERIFY_CRL flag below. | ||
1705 | # | ||
1706 | # tls-dh=[curve:]file | ||
1707 | # File containing DH parameters for temporary/ephemeral DH key | ||
1708 | # exchanges, optionally prefixed by a curve for ephemeral ECDH | ||
1709 | # key exchanges. | ||
1710 | # | ||
1711 | # sslflags= Various flags modifying the use of SSL: | ||
1712 | # DELAYED_AUTH | ||
1713 | # Don't request client certificates | ||
1714 | # immediately, but wait until acl processing | ||
1715 | # requires a certificate (not yet implemented). | ||
1716 | # NO_DEFAULT_CA | ||
1717 | # Don't use the default CA lists built in | ||
1718 | # to OpenSSL. | ||
1719 | # NO_SESSION_REUSE | ||
1720 | # Don't allow for session reuse. Each connection | ||
1721 | # will result in a new SSL session. | ||
1722 | # VERIFY_CRL | ||
1723 | # Verify CRL lists when accepting client | ||
1724 | # certificates. | ||
1725 | # VERIFY_CRL_ALL | ||
1726 | # Verify CRL lists for all certificates in the | ||
1727 | # client certificate chain. | ||
1728 | # | ||
1729 | # sslcontext= SSL session ID context identifier. | ||
1730 | # | ||
1731 | # generate-host-certificates[=<on|off>] | ||
1732 | # Dynamically create SSL server certificates for the | ||
1733 | # destination hosts of bumped SSL requests.When | ||
1734 | # enabled, the cert and key options are used to sign | ||
1735 | # generated certificates. Otherwise generated | ||
1736 | # certificate will be selfsigned. | ||
1737 | # If there is CA certificate life time of generated | ||
1738 | # certificate equals lifetime of CA certificate. If | ||
1739 | # generated certificate is selfsigned lifetime is three | ||
1740 | # years. | ||
1741 | # This option is disabled by default. See the ssl-bump | ||
1742 | # option above for more information. | ||
1743 | # | ||
1744 | # dynamic_cert_mem_cache_size=SIZE | ||
1745 | # Approximate total RAM size spent on cached generated | ||
1746 | # certificates. If set to zero, caching is disabled. | ||
1747 | # | ||
1748 | # See http_port for a list of available options. | ||
1749 | #Default: | ||
1750 | # none | ||
1751 | |||
1752 | # TAG: ftp_port | ||
1753 | # Enables Native FTP proxy by specifying the socket address where Squid | ||
1754 | # listens for FTP client requests. See http_port directive for various | ||
1755 | # ways to specify the listening address and mode. | ||
1756 | # | ||
1757 | # Usage: ftp_port address [mode] [options] | ||
1758 | # | ||
1759 | # WARNING: This is a new, experimental, complex feature that has seen | ||
1760 | # limited production exposure. Some Squid modules (e.g., caching) do not | ||
1761 | # currently work with native FTP proxying, and many features have not | ||
1762 | # even been tested for compatibility. Test well before deploying! | ||
1763 | # | ||
1764 | # Native FTP proxying differs substantially from proxying HTTP requests | ||
1765 | # with ftp:// URIs because Squid works as an FTP server and receives | ||
1766 | # actual FTP commands (rather than HTTP requests with FTP URLs). | ||
1767 | # | ||
1768 | # Native FTP commands accepted at ftp_port are internally converted or | ||
1769 | # wrapped into HTTP-like messages. The same happens to Native FTP | ||
1770 | # responses received from FTP origin servers. Those HTTP-like messages | ||
1771 | # are shoveled through regular access control and adaptation layers | ||
1772 | # between the FTP client and the FTP origin server. This allows Squid to | ||
1773 | # examine, adapt, block, and log FTP exchanges. Squid reuses most HTTP | ||
1774 | # mechanisms when shoveling wrapped FTP messages. For example, | ||
1775 | # http_access and adaptation_access directives are used. | ||
1776 | # | ||
1777 | # Modes: | ||
1778 | # | ||
1779 | # intercept Same as http_port intercept. The FTP origin address is | ||
1780 | # determined based on the intended destination of the | ||
1781 | # intercepted connection. | ||
1782 | # | ||
1783 | # tproxy Support Linux TPROXY for spoofing outgoing | ||
1784 | # connections using the client IP address. | ||
1785 | # NP: disables authentication and maybe IPv6 on the port. | ||
1786 | # | ||
1787 | # By default (i.e., without an explicit mode option), Squid extracts the | ||
1788 | # FTP origin address from the login@origin parameter of the FTP USER | ||
1789 | # command. Many popular FTP clients support such native FTP proxying. | ||
1790 | # | ||
1791 | # Options: | ||
1792 | # | ||
1793 | # name=token Specifies an internal name for the port. Defaults to | ||
1794 | # the port address. Usable with myportname ACL. | ||
1795 | # | ||
1796 | # ftp-track-dirs | ||
1797 | # Enables tracking of FTP directories by injecting extra | ||
1798 | # PWD commands and adjusting Request-URI (in wrapping | ||
1799 | # HTTP requests) to reflect the current FTP server | ||
1800 | # directory. Tracking is disabled by default. | ||
1801 | # | ||
1802 | # protocol=FTP Protocol to reconstruct accelerated and intercepted | ||
1803 | # requests with. Defaults to FTP. No other accepted | ||
1804 | # values have been tested with. An unsupported value | ||
1805 | # results in a FATAL error. Accepted values are FTP, | ||
1806 | # HTTP (or HTTP/1.1), and HTTPS (or HTTPS/1.1). | ||
1807 | # | ||
1808 | # Other http_port modes and options that are not specific to HTTP and | ||
1809 | # HTTPS may also work. | ||
1810 | #Default: | ||
1811 | # none | ||
1812 | |||
1813 | # TAG: tcp_outgoing_tos | ||
1814 | # Allows you to select a TOS/Diffserv value for packets outgoing | ||
1815 | # on the server side, based on an ACL. | ||
1816 | # | ||
1817 | # tcp_outgoing_tos ds-field [!]aclname ... | ||
1818 | # | ||
1819 | # Example where normal_service_net uses the TOS value 0x00 | ||
1820 | # and good_service_net uses 0x20 | ||
1821 | # | ||
1822 | # acl normal_service_net src 10.0.0.0/24 | ||
1823 | # acl good_service_net src 10.0.1.0/24 | ||
1824 | # tcp_outgoing_tos 0x00 normal_service_net | ||
1825 | # tcp_outgoing_tos 0x20 good_service_net | ||
1826 | # | ||
1827 | # TOS/DSCP values really only have local significance - so you should | ||
1828 | # know what you're specifying. For more information, see RFC2474, | ||
1829 | # RFC2475, and RFC3260. | ||
1830 | # | ||
1831 | # The TOS/DSCP byte must be exactly that - a octet value 0 - 255, or | ||
1832 | # "default" to use whatever default your host has. | ||
1833 | # Note that only multiples of 4 are usable as the two rightmost bits have | ||
1834 | # been redefined for use by ECN (RFC 3168 section 23.1). | ||
1835 | # The squid parser will enforce this by masking away the ECN bits. | ||
1836 | # | ||
1837 | # Processing proceeds in the order specified, and stops at first fully | ||
1838 | # matching line. | ||
1839 | # | ||
1840 | # Only fast ACLs are supported. | ||
1841 | #Default: | ||
1842 | # none | ||
1843 | |||
1844 | # TAG: clientside_tos | ||
1845 | # Allows you to select a TOS/DSCP value for packets being transmitted | ||
1846 | # on the client-side, based on an ACL. | ||
1847 | # | ||
1848 | # clientside_tos ds-field [!]aclname ... | ||
1849 | # | ||
1850 | # Example where normal_service_net uses the TOS value 0x00 | ||
1851 | # and good_service_net uses 0x20 | ||
1852 | # | ||
1853 | # acl normal_service_net src 10.0.0.0/24 | ||
1854 | # acl good_service_net src 10.0.1.0/24 | ||
1855 | # clientside_tos 0x00 normal_service_net | ||
1856 | # clientside_tos 0x20 good_service_net | ||
1857 | # | ||
1858 | # Note: This feature is incompatible with qos_flows. Any TOS values set here | ||
1859 | # will be overwritten by TOS values in qos_flows. | ||
1860 | # | ||
1861 | # The TOS/DSCP byte must be exactly that - a octet value 0 - 255, or | ||
1862 | # "default" to use whatever default your host has. | ||
1863 | # Note that only multiples of 4 are usable as the two rightmost bits have | ||
1864 | # been redefined for use by ECN (RFC 3168 section 23.1). | ||
1865 | # The squid parser will enforce this by masking away the ECN bits. | ||
1866 | # | ||
1867 | #Default: | ||
1868 | # none | ||
1869 | |||
1870 | # TAG: tcp_outgoing_mark | ||
1871 | # Note: This option is only available if Squid is rebuilt with the | ||
1872 | # Packet MARK (Linux) | ||
1873 | # | ||
1874 | # Allows you to apply a Netfilter mark value to outgoing packets | ||
1875 | # on the server side, based on an ACL. | ||
1876 | # | ||
1877 | # tcp_outgoing_mark mark-value [!]aclname ... | ||
1878 | # | ||
1879 | # Example where normal_service_net uses the mark value 0x00 | ||
1880 | # and good_service_net uses 0x20 | ||
1881 | # | ||
1882 | # acl normal_service_net src 10.0.0.0/24 | ||
1883 | # acl good_service_net src 10.0.1.0/24 | ||
1884 | # tcp_outgoing_mark 0x00 normal_service_net | ||
1885 | # tcp_outgoing_mark 0x20 good_service_net | ||
1886 | # | ||
1887 | # Only fast ACLs are supported. | ||
1888 | #Default: | ||
1889 | # none | ||
1890 | |||
1891 | # TAG: clientside_mark | ||
1892 | # Note: This option is only available if Squid is rebuilt with the | ||
1893 | # Packet MARK (Linux) | ||
1894 | # | ||
1895 | # Allows you to apply a Netfilter mark value to packets being transmitted | ||
1896 | # on the client-side, based on an ACL. | ||
1897 | # | ||
1898 | # clientside_mark mark-value [!]aclname ... | ||
1899 | # | ||
1900 | # Example where normal_service_net uses the mark value 0x00 | ||
1901 | # and good_service_net uses 0x20 | ||
1902 | # | ||
1903 | # acl normal_service_net src 10.0.0.0/24 | ||
1904 | # acl good_service_net src 10.0.1.0/24 | ||
1905 | # clientside_mark 0x00 normal_service_net | ||
1906 | # clientside_mark 0x20 good_service_net | ||
1907 | # | ||
1908 | # Note: This feature is incompatible with qos_flows. Any mark values set here | ||
1909 | # will be overwritten by mark values in qos_flows. | ||
1910 | #Default: | ||
1911 | # none | ||
1912 | |||
1913 | # TAG: qos_flows | ||
1914 | # Allows you to select a TOS/DSCP value to mark outgoing | ||
1915 | # connections to the client, based on where the reply was sourced. | ||
1916 | # For platforms using netfilter, allows you to set a netfilter mark | ||
1917 | # value instead of, or in addition to, a TOS value. | ||
1918 | # | ||
1919 | # By default this functionality is disabled. To enable it with the default | ||
1920 | # settings simply use "qos_flows mark" or "qos_flows tos". Default | ||
1921 | # settings will result in the netfilter mark or TOS value being copied | ||
1922 | # from the upstream connection to the client. Note that it is the connection | ||
1923 | # CONNMARK value not the packet MARK value that is copied. | ||
1924 | # | ||
1925 | # It is not currently possible to copy the mark or TOS value from the | ||
1926 | # client to the upstream connection request. | ||
1927 | # | ||
1928 | # TOS values really only have local significance - so you should | ||
1929 | # know what you're specifying. For more information, see RFC2474, | ||
1930 | # RFC2475, and RFC3260. | ||
1931 | # | ||
1932 | # The TOS/DSCP byte must be exactly that - a octet value 0 - 255. | ||
1933 | # Note that only multiples of 4 are usable as the two rightmost bits have | ||
1934 | # been redefined for use by ECN (RFC 3168 section 23.1). | ||
1935 | # The squid parser will enforce this by masking away the ECN bits. | ||
1936 | # | ||
1937 | # Mark values can be any unsigned 32-bit integer value. | ||
1938 | # | ||
1939 | # This setting is configured by setting the following values: | ||
1940 | # | ||
1941 | # tos|mark Whether to set TOS or netfilter mark values | ||
1942 | # | ||
1943 | # local-hit=0xFF Value to mark local cache hits. | ||
1944 | # | ||
1945 | # sibling-hit=0xFF Value to mark hits from sibling peers. | ||
1946 | # | ||
1947 | # parent-hit=0xFF Value to mark hits from parent peers. | ||
1948 | # | ||
1949 | # miss=0xFF[/mask] Value to mark cache misses. Takes precedence | ||
1950 | # over the preserve-miss feature (see below), unless | ||
1951 | # mask is specified, in which case only the bits | ||
1952 | # specified in the mask are written. | ||
1953 | # | ||
1954 | # The TOS variant of the following features are only possible on Linux | ||
1955 | # and require your kernel to be patched with the TOS preserving ZPH | ||
1956 | # patch, available from http://zph.bratcheda.org | ||
1957 | # No patch is needed to preserve the netfilter mark, which will work | ||
1958 | # with all variants of netfilter. | ||
1959 | # | ||
1960 | # disable-preserve-miss | ||
1961 | # This option disables the preservation of the TOS or netfilter | ||
1962 | # mark. By default, the existing TOS or netfilter mark value of | ||
1963 | # the response coming from the remote server will be retained | ||
1964 | # and masked with miss-mark. | ||
1965 | # NOTE: in the case of a netfilter mark, the mark must be set on | ||
1966 | # the connection (using the CONNMARK target) not on the packet | ||
1967 | # (MARK target). | ||
1968 | # | ||
1969 | # miss-mask=0xFF | ||
1970 | # Allows you to mask certain bits in the TOS or mark value | ||
1971 | # received from the remote server, before copying the value to | ||
1972 | # the TOS sent towards clients. | ||
1973 | # Default for tos: 0xFF (TOS from server is not changed). | ||
1974 | # Default for mark: 0xFFFFFFFF (mark from server is not changed). | ||
1975 | # | ||
1976 | # All of these features require the --enable-zph-qos compilation flag | ||
1977 | # (enabled by default). Netfilter marking also requires the | ||
1978 | # libnetfilter_conntrack libraries (--with-netfilter-conntrack) and | ||
1979 | # libcap 2.09+ (--with-libcap). | ||
1980 | # | ||
1981 | #Default: | ||
1982 | # none | ||
1983 | |||
1984 | # TAG: tcp_outgoing_address | ||
1985 | # Allows you to map requests to different outgoing IP addresses | ||
1986 | # based on the username or source address of the user making | ||
1987 | # the request. | ||
1988 | # | ||
1989 | # tcp_outgoing_address ipaddr [[!]aclname] ... | ||
1990 | # | ||
1991 | # For example; | ||
1992 | # Forwarding clients with dedicated IPs for certain subnets. | ||
1993 | # | ||
1994 | # acl normal_service_net src 10.0.0.0/24 | ||
1995 | # acl good_service_net src 10.0.2.0/24 | ||
1996 | # | ||
1997 | # tcp_outgoing_address 2001:db8::c001 good_service_net | ||
1998 | # tcp_outgoing_address 10.1.0.2 good_service_net | ||
1999 | # | ||
2000 | # tcp_outgoing_address 2001:db8::beef normal_service_net | ||
2001 | # tcp_outgoing_address 10.1.0.1 normal_service_net | ||
2002 | # | ||
2003 | # tcp_outgoing_address 2001:db8::1 | ||
2004 | # tcp_outgoing_address 10.1.0.3 | ||
2005 | # | ||
2006 | # Processing proceeds in the order specified, and stops at first fully | ||
2007 | # matching line. | ||
2008 | # | ||
2009 | # Squid will add an implicit IP version test to each line. | ||
2010 | # Requests going to IPv4 websites will use the outgoing 10.1.0.* addresses. | ||
2011 | # Requests going to IPv6 websites will use the outgoing 2001:db8:* addresses. | ||
2012 | # | ||
2013 | # | ||
2014 | # NOTE: The use of this directive using client dependent ACLs is | ||
2015 | # incompatible with the use of server side persistent connections. To | ||
2016 | # ensure correct results it is best to set server_persistent_connections | ||
2017 | # to off when using this directive in such configurations. | ||
2018 | # | ||
2019 | # NOTE: The use of this directive to set a local IP on outgoing TCP links | ||
2020 | # is incompatible with using TPROXY to set client IP out outbound TCP links. | ||
2021 | # When needing to contact peers use the no-tproxy cache_peer option and the | ||
2022 | # client_dst_passthru directive re-enable normal forwarding such as this. | ||
2023 | # | ||
2024 | #Default: | ||
2025 | # Address selection is performed by the operating system. | ||
2026 | |||
2027 | # TAG: host_verify_strict | ||
2028 | # Regardless of this option setting, when dealing with intercepted | ||
2029 | # traffic, Squid always verifies that the destination IP address matches | ||
2030 | # the Host header domain or IP (called 'authority form URL'). | ||
2031 | # | ||
2032 | # This enforcement is performed to satisfy a MUST-level requirement in | ||
2033 | # RFC 2616 section 14.23: "The Host field value MUST represent the naming | ||
2034 | # authority of the origin server or gateway given by the original URL". | ||
2035 | # | ||
2036 | # When set to ON: | ||
2037 | # Squid always responds with an HTTP 409 (Conflict) error | ||
2038 | # page and logs a security warning if there is no match. | ||
2039 | # | ||
2040 | # Squid verifies that the destination IP address matches | ||
2041 | # the Host header for forward-proxy and reverse-proxy traffic | ||
2042 | # as well. For those traffic types, Squid also enables the | ||
2043 | # following checks, comparing the corresponding Host header | ||
2044 | # and Request-URI components: | ||
2045 | # | ||
2046 | # * The host names (domain or IP) must be identical, | ||
2047 | # but valueless or missing Host header disables all checks. | ||
2048 | # For the two host names to match, both must be either IP | ||
2049 | # or FQDN. | ||
2050 | # | ||
2051 | # * Port numbers must be identical, but if a port is missing | ||
2052 | # the scheme-default port is assumed. | ||
2053 | # | ||
2054 | # | ||
2055 | # When set to OFF (the default): | ||
2056 | # Squid allows suspicious requests to continue but logs a | ||
2057 | # security warning and blocks caching of the response. | ||
2058 | # | ||
2059 | # * Forward-proxy traffic is not checked at all. | ||
2060 | # | ||
2061 | # * Reverse-proxy traffic is not checked at all. | ||
2062 | # | ||
2063 | # * Intercepted traffic which passes verification is handled | ||
2064 | # according to client_dst_passthru. | ||
2065 | # | ||
2066 | # * Intercepted requests which fail verification are sent | ||
2067 | # to the client original destination instead of DIRECT. | ||
2068 | # This overrides 'client_dst_passthru off'. | ||
2069 | # | ||
2070 | # For now suspicious intercepted CONNECT requests are always | ||
2071 | # responded to with an HTTP 409 (Conflict) error page. | ||
2072 | # | ||
2073 | # | ||
2074 | # SECURITY NOTE: | ||
2075 | # | ||
2076 | # As described in CVE-2009-0801 when the Host: header alone is used | ||
2077 | # to determine the destination of a request it becomes trivial for | ||
2078 | # malicious scripts on remote websites to bypass browser same-origin | ||
2079 | # security policy and sandboxing protections. | ||
2080 | # | ||
2081 | # The cause of this is that such applets are allowed to perform their | ||
2082 | # own HTTP stack, in which case the same-origin policy of the browser | ||
2083 | # sandbox only verifies that the applet tries to contact the same IP | ||
2084 | # as from where it was loaded at the IP level. The Host: header may | ||
2085 | # be different from the connected IP and approved origin. | ||
2086 | # | ||
2087 | #Default: | ||
2088 | # host_verify_strict off | ||
2089 | |||
2090 | # TAG: client_dst_passthru | ||
2091 | # With NAT or TPROXY intercepted traffic Squid may pass the request | ||
2092 | # directly to the original client destination IP or seek a faster | ||
2093 | # source using the HTTP Host header. | ||
2094 | # | ||
2095 | # Using Host to locate alternative servers can provide faster | ||
2096 | # connectivity with a range of failure recovery options. | ||
2097 | # But can also lead to connectivity trouble when the client and | ||
2098 | # server are attempting stateful interactions unaware of the proxy. | ||
2099 | # | ||
2100 | # This option (on by default) prevents alternative DNS entries being | ||
2101 | # located to send intercepted traffic DIRECT to an origin server. | ||
2102 | # The clients original destination IP and port will be used instead. | ||
2103 | # | ||
2104 | # Regardless of this option setting, when dealing with intercepted | ||
2105 | # traffic Squid will verify the Host: header and any traffic which | ||
2106 | # fails Host verification will be treated as if this option were ON. | ||
2107 | # | ||
2108 | # see host_verify_strict for details on the verification process. | ||
2109 | #Default: | ||
2110 | # client_dst_passthru on | ||
2111 | |||
2112 | # SSL OPTIONS | ||
2113 | # ----------------------------------------------------------------------------- | ||
2114 | |||
2115 | # TAG: ssl_unclean_shutdown | ||
2116 | # Note: This option is only available if Squid is rebuilt with the | ||
2117 | # --with-openssl | ||
2118 | # | ||
2119 | # Some browsers (especially MSIE) bugs out on SSL shutdown | ||
2120 | # messages. | ||
2121 | #Default: | ||
2122 | # ssl_unclean_shutdown off | ||
2123 | |||
2124 | # TAG: ssl_engine | ||
2125 | # Note: This option is only available if Squid is rebuilt with the | ||
2126 | # --with-openssl | ||
2127 | # | ||
2128 | # The OpenSSL engine to use. You will need to set this if you | ||
2129 | # would like to use hardware SSL acceleration for example. | ||
2130 | #Default: | ||
2131 | # none | ||
2132 | |||
2133 | # TAG: sslproxy_client_certificate | ||
2134 | # Note: This option is only available if Squid is rebuilt with the | ||
2135 | # --with-openssl | ||
2136 | # | ||
2137 | # Client SSL Certificate to use when proxying https:// URLs | ||
2138 | #Default: | ||
2139 | # none | ||
2140 | |||
2141 | # TAG: sslproxy_client_key | ||
2142 | # Note: This option is only available if Squid is rebuilt with the | ||
2143 | # --with-openssl | ||
2144 | # | ||
2145 | # Client SSL Key to use when proxying https:// URLs | ||
2146 | #Default: | ||
2147 | # none | ||
2148 | |||
2149 | # TAG: sslproxy_version | ||
2150 | # Note: This option is only available if Squid is rebuilt with the | ||
2151 | # --with-openssl | ||
2152 | # | ||
2153 | # SSL version level to use when proxying https:// URLs | ||
2154 | # | ||
2155 | # The versions of SSL/TLS supported: | ||
2156 | # | ||
2157 | # 1 automatic (default) | ||
2158 | # 2 SSLv2 only | ||
2159 | # 3 SSLv3 only | ||
2160 | # 4 TLSv1.0 only | ||
2161 | # 5 TLSv1.1 only | ||
2162 | # 6 TLSv1.2 only | ||
2163 | #Default: | ||
2164 | # automatic SSL/TLS version negotiation | ||
2165 | |||
2166 | # TAG: sslproxy_options | ||
2167 | # Note: This option is only available if Squid is rebuilt with the | ||
2168 | # --with-openssl | ||
2169 | # | ||
2170 | # Colon (:) or comma (,) separated list of SSL implementation options | ||
2171 | # to use when proxying https:// URLs | ||
2172 | # | ||
2173 | # The most important being: | ||
2174 | # | ||
2175 | # NO_SSLv2 Disallow the use of SSLv2 | ||
2176 | # NO_SSLv3 Disallow the use of SSLv3 | ||
2177 | # NO_TLSv1 Disallow the use of TLSv1.0 | ||
2178 | # NO_TLSv1_1 Disallow the use of TLSv1.1 | ||
2179 | # NO_TLSv1_2 Disallow the use of TLSv1.2 | ||
2180 | # | ||
2181 | # SINGLE_DH_USE | ||
2182 | # Always create a new key when using temporary/ephemeral | ||
2183 | # DH key exchanges | ||
2184 | # | ||
2185 | # NO_TICKET | ||
2186 | # Disable use of RFC5077 session tickets. Some servers | ||
2187 | # may have problems understanding the TLS extension due | ||
2188 | # to ambiguous specification in RFC4507. | ||
2189 | # | ||
2190 | # ALL Enable various bug workarounds suggested as "harmless" | ||
2191 | # by OpenSSL. Be warned that this may reduce SSL/TLS | ||
2192 | # strength to some attacks. | ||
2193 | # | ||
2194 | # See the OpenSSL SSL_CTX_set_options documentation for a | ||
2195 | # complete list of possible options. | ||
2196 | # | ||
2197 | # WARNING: This directive takes a single token. If a space is used | ||
2198 | # the value(s) after that space are SILENTLY IGNORED. | ||
2199 | #Default: | ||
2200 | # none | ||
2201 | |||
2202 | # TAG: sslproxy_cipher | ||
2203 | # Note: This option is only available if Squid is rebuilt with the | ||
2204 | # --with-openssl | ||
2205 | # | ||
2206 | # SSL cipher list to use when proxying https:// URLs | ||
2207 | # | ||
2208 | # Colon separated list of supported ciphers. | ||
2209 | #Default: | ||
2210 | # none | ||
2211 | |||
2212 | # TAG: sslproxy_cafile | ||
2213 | # Note: This option is only available if Squid is rebuilt with the | ||
2214 | # --with-openssl | ||
2215 | # | ||
2216 | # file containing CA certificates to use when verifying server | ||
2217 | # certificates while proxying https:// URLs | ||
2218 | #Default: | ||
2219 | # none | ||
2220 | |||
2221 | # TAG: sslproxy_capath | ||
2222 | # Note: This option is only available if Squid is rebuilt with the | ||
2223 | # --with-openssl | ||
2224 | # | ||
2225 | # directory containing CA certificates to use when verifying | ||
2226 | # server certificates while proxying https:// URLs | ||
2227 | #Default: | ||
2228 | # none | ||
2229 | |||
2230 | # TAG: sslproxy_session_ttl | ||
2231 | # Note: This option is only available if Squid is rebuilt with the | ||
2232 | # --with-openssl | ||
2233 | # | ||
2234 | # Sets the timeout value for SSL sessions | ||
2235 | #Default: | ||
2236 | # sslproxy_session_ttl 300 | ||
2237 | |||
2238 | # TAG: sslproxy_session_cache_size | ||
2239 | # Note: This option is only available if Squid is rebuilt with the | ||
2240 | # --with-openssl | ||
2241 | # | ||
2242 | # Sets the cache size to use for ssl session | ||
2243 | #Default: | ||
2244 | # sslproxy_session_cache_size 2 MB | ||
2245 | |||
2246 | # TAG: sslproxy_foreign_intermediate_certs | ||
2247 | # Note: This option is only available if Squid is rebuilt with the | ||
2248 | # --with-openssl | ||
2249 | # | ||
2250 | # Many origin servers fail to send their full server certificate | ||
2251 | # chain for verification, assuming the client already has or can | ||
2252 | # easily locate any missing intermediate certificates. | ||
2253 | # | ||
2254 | # Squid uses the certificates from the specified file to fill in | ||
2255 | # these missing chains when trying to validate origin server | ||
2256 | # certificate chains. | ||
2257 | # | ||
2258 | # The file is expected to contain zero or more PEM-encoded | ||
2259 | # intermediate certificates. These certificates are not treated | ||
2260 | # as trusted root certificates, and any self-signed certificate in | ||
2261 | # this file will be ignored. | ||
2262 | #Default: | ||
2263 | # none | ||
2264 | |||
2265 | # TAG: sslproxy_cert_sign_hash | ||
2266 | # Note: This option is only available if Squid is rebuilt with the | ||
2267 | # --with-openssl | ||
2268 | # | ||
2269 | # Sets the hashing algorithm to use when signing generated certificates. | ||
2270 | # Valid algorithm names depend on the OpenSSL library used. The following | ||
2271 | # names are usually available: sha1, sha256, sha512, and md5. Please see | ||
2272 | # your OpenSSL library manual for the available hashes. By default, Squids | ||
2273 | # that support this option use sha256 hashes. | ||
2274 | # | ||
2275 | # Squid does not forcefully purge cached certificates that were generated | ||
2276 | # with an algorithm other than the currently configured one. They remain | ||
2277 | # in the cache, subject to the regular cache eviction policy, and become | ||
2278 | # useful if the algorithm changes again. | ||
2279 | #Default: | ||
2280 | # none | ||
2281 | |||
2282 | # TAG: ssl_bump | ||
2283 | # Note: This option is only available if Squid is rebuilt with the | ||
2284 | # --with-openssl | ||
2285 | # | ||
2286 | # This option is consulted when a CONNECT request is received on | ||
2287 | # an http_port (or a new connection is intercepted at an | ||
2288 | # https_port), provided that port was configured with an ssl-bump | ||
2289 | # flag. The subsequent data on the connection is either treated as | ||
2290 | # HTTPS and decrypted OR tunneled at TCP level without decryption, | ||
2291 | # depending on the first matching bumping "action". | ||
2292 | # | ||
2293 | # ssl_bump <action> [!]acl ... | ||
2294 | # | ||
2295 | # The following bumping actions are currently supported: | ||
2296 | # | ||
2297 | # splice | ||
2298 | # Become a TCP tunnel without decrypting proxied traffic. | ||
2299 | # This is the default action. | ||
2300 | # | ||
2301 | # bump | ||
2302 | # When used on step SslBump1, establishes a secure connection | ||
2303 | # with the client first, then connect to the server. | ||
2304 | # When used on step SslBump2 or SslBump3, establishes a secure | ||
2305 | # connection with the server and, using a mimicked server | ||
2306 | # certificate, with the client. | ||
2307 | # | ||
2308 | # peek | ||
2309 | # Receive client (step SslBump1) or server (step SslBump2) | ||
2310 | # certificate while preserving the possibility of splicing the | ||
2311 | # connection. Peeking at the server certificate (during step 2) | ||
2312 | # usually precludes bumping of the connection at step 3. | ||
2313 | # | ||
2314 | # stare | ||
2315 | # Receive client (step SslBump1) or server (step SslBump2) | ||
2316 | # certificate while preserving the possibility of bumping the | ||
2317 | # connection. Staring at the server certificate (during step 2) | ||
2318 | # usually precludes splicing of the connection at step 3. | ||
2319 | # | ||
2320 | # terminate | ||
2321 | # Close client and server connections. | ||
2322 | # | ||
2323 | # Backward compatibility actions available at step SslBump1: | ||
2324 | # | ||
2325 | # client-first | ||
2326 | # Bump the connection. Establish a secure connection with the | ||
2327 | # client first, then connect to the server. This old mode does | ||
2328 | # not allow Squid to mimic server SSL certificate and does not | ||
2329 | # work with intercepted SSL connections. | ||
2330 | # | ||
2331 | # server-first | ||
2332 | # Bump the connection. Establish a secure connection with the | ||
2333 | # server first, then establish a secure connection with the | ||
2334 | # client, using a mimicked server certificate. Works with both | ||
2335 | # CONNECT requests and intercepted SSL connections, but does | ||
2336 | # not allow to make decisions based on SSL handshake info. | ||
2337 | # | ||
2338 | # peek-and-splice | ||
2339 | # Decide whether to bump or splice the connection based on | ||
2340 | # client-to-squid and server-to-squid SSL hello messages. | ||
2341 | # XXX: Remove. | ||
2342 | # | ||
2343 | # none | ||
2344 | # Same as the "splice" action. | ||
2345 | # | ||
2346 | # All ssl_bump rules are evaluated at each of the supported bumping | ||
2347 | # steps. Rules with actions that are impossible at the current step are | ||
2348 | # ignored. The first matching ssl_bump action wins and is applied at the | ||
2349 | # end of the current step. If no rules match, the splice action is used. | ||
2350 | # See the at_step ACL for a list of the supported SslBump steps. | ||
2351 | # | ||
2352 | # This clause supports both fast and slow acl types. | ||
2353 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
2354 | # | ||
2355 | # See also: http_port ssl-bump, https_port ssl-bump, and acl at_step. | ||
2356 | # | ||
2357 | # | ||
2358 | # # Example: Bump all TLS connections except those originating from | ||
2359 | # # localhost or those going to example.com. | ||
2360 | # | ||
2361 | # acl broken_sites ssl::server_name .example.com | ||
2362 | # ssl_bump splice localhost | ||
2363 | # ssl_bump splice broken_sites | ||
2364 | # ssl_bump bump all | ||
2365 | #Default: | ||
2366 | # Become a TCP tunnel without decrypting proxied traffic. | ||
2367 | |||
2368 | # TAG: sslproxy_flags | ||
2369 | # Note: This option is only available if Squid is rebuilt with the | ||
2370 | # --with-openssl | ||
2371 | # | ||
2372 | # Various flags modifying the use of SSL while proxying https:// URLs: | ||
2373 | # DONT_VERIFY_PEER Accept certificates that fail verification. | ||
2374 | # For refined control, see sslproxy_cert_error. | ||
2375 | # NO_DEFAULT_CA Don't use the default CA list built in | ||
2376 | # to OpenSSL. | ||
2377 | #Default: | ||
2378 | # none | ||
2379 | |||
2380 | # TAG: sslproxy_cert_error | ||
2381 | # Note: This option is only available if Squid is rebuilt with the | ||
2382 | # --with-openssl | ||
2383 | # | ||
2384 | # Use this ACL to bypass server certificate validation errors. | ||
2385 | # | ||
2386 | # For example, the following lines will bypass all validation errors | ||
2387 | # when talking to servers for example.com. All other | ||
2388 | # validation errors will result in ERR_SECURE_CONNECT_FAIL error. | ||
2389 | # | ||
2390 | # acl BrokenButTrustedServers dstdomain example.com | ||
2391 | # sslproxy_cert_error allow BrokenButTrustedServers | ||
2392 | # sslproxy_cert_error deny all | ||
2393 | # | ||
2394 | # This clause only supports fast acl types. | ||
2395 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
2396 | # Using slow acl types may result in server crashes | ||
2397 | # | ||
2398 | # Without this option, all server certificate validation errors | ||
2399 | # terminate the transaction to protect Squid and the client. | ||
2400 | # | ||
2401 | # SQUID_X509_V_ERR_INFINITE_VALIDATION error cannot be bypassed | ||
2402 | # but should not happen unless your OpenSSL library is buggy. | ||
2403 | # | ||
2404 | # SECURITY WARNING: | ||
2405 | # Bypassing validation errors is dangerous because an | ||
2406 | # error usually implies that the server cannot be trusted | ||
2407 | # and the connection may be insecure. | ||
2408 | # | ||
2409 | # See also: sslproxy_flags and DONT_VERIFY_PEER. | ||
2410 | #Default: | ||
2411 | # Server certificate errors terminate the transaction. | ||
2412 | |||
2413 | # TAG: sslproxy_cert_sign | ||
2414 | # Note: This option is only available if Squid is rebuilt with the | ||
2415 | # --with-openssl | ||
2416 | # | ||
2417 | # | ||
2418 | # sslproxy_cert_sign <signing algorithm> acl ... | ||
2419 | # | ||
2420 | # The following certificate signing algorithms are supported: | ||
2421 | # | ||
2422 | # signTrusted | ||
2423 | # Sign using the configured CA certificate which is usually | ||
2424 | # placed in and trusted by end-user browsers. This is the | ||
2425 | # default for trusted origin server certificates. | ||
2426 | # | ||
2427 | # signUntrusted | ||
2428 | # Sign to guarantee an X509_V_ERR_CERT_UNTRUSTED browser error. | ||
2429 | # This is the default for untrusted origin server certificates | ||
2430 | # that are not self-signed (see ssl::certUntrusted). | ||
2431 | # | ||
2432 | # signSelf | ||
2433 | # Sign using a self-signed certificate with the right CN to | ||
2434 | # generate a X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT error in the | ||
2435 | # browser. This is the default for self-signed origin server | ||
2436 | # certificates (see ssl::certSelfSigned). | ||
2437 | # | ||
2438 | # This clause only supports fast acl types. | ||
2439 | # | ||
2440 | # When sslproxy_cert_sign acl(s) match, Squid uses the corresponding | ||
2441 | # signing algorithm to generate the certificate and ignores all | ||
2442 | # subsequent sslproxy_cert_sign options (the first match wins). If no | ||
2443 | # acl(s) match, the default signing algorithm is determined by errors | ||
2444 | # detected when obtaining and validating the origin server certificate. | ||
2445 | # | ||
2446 | # WARNING: SQUID_X509_V_ERR_DOMAIN_MISMATCH and ssl:certDomainMismatch can | ||
2447 | # be used with sslproxy_cert_adapt, but if and only if Squid is bumping a | ||
2448 | # CONNECT request that carries a domain name. In all other cases (CONNECT | ||
2449 | # to an IP address or an intercepted SSL connection), Squid cannot detect | ||
2450 | # the domain mismatch at certificate generation time when | ||
2451 | # bump-server-first is used. | ||
2452 | #Default: | ||
2453 | # none | ||
2454 | |||
2455 | # TAG: sslproxy_cert_adapt | ||
2456 | # Note: This option is only available if Squid is rebuilt with the | ||
2457 | # --with-openssl | ||
2458 | # | ||
2459 | # | ||
2460 | # sslproxy_cert_adapt <adaptation algorithm> acl ... | ||
2461 | # | ||
2462 | # The following certificate adaptation algorithms are supported: | ||
2463 | # | ||
2464 | # setValidAfter | ||
2465 | # Sets the "Not After" property to the "Not After" property of | ||
2466 | # the CA certificate used to sign generated certificates. | ||
2467 | # | ||
2468 | # setValidBefore | ||
2469 | # Sets the "Not Before" property to the "Not Before" property of | ||
2470 | # the CA certificate used to sign generated certificates. | ||
2471 | # | ||
2472 | # setCommonName or setCommonName{CN} | ||
2473 | # Sets Subject.CN property to the host name specified as a | ||
2474 | # CN parameter or, if no explicit CN parameter was specified, | ||
2475 | # extracted from the CONNECT request. It is a misconfiguration | ||
2476 | # to use setCommonName without an explicit parameter for | ||
2477 | # intercepted or tproxied SSL connections. | ||
2478 | # | ||
2479 | # This clause only supports fast acl types. | ||
2480 | # | ||
2481 | # Squid first groups sslproxy_cert_adapt options by adaptation algorithm. | ||
2482 | # Within a group, when sslproxy_cert_adapt acl(s) match, Squid uses the | ||
2483 | # corresponding adaptation algorithm to generate the certificate and | ||
2484 | # ignores all subsequent sslproxy_cert_adapt options in that algorithm's | ||
2485 | # group (i.e., the first match wins within each algorithm group). If no | ||
2486 | # acl(s) match, the default mimicking action takes place. | ||
2487 | # | ||
2488 | # WARNING: SQUID_X509_V_ERR_DOMAIN_MISMATCH and ssl:certDomainMismatch can | ||
2489 | # be used with sslproxy_cert_adapt, but if and only if Squid is bumping a | ||
2490 | # CONNECT request that carries a domain name. In all other cases (CONNECT | ||
2491 | # to an IP address or an intercepted SSL connection), Squid cannot detect | ||
2492 | # the domain mismatch at certificate generation time when | ||
2493 | # bump-server-first is used. | ||
2494 | #Default: | ||
2495 | # none | ||
2496 | |||
2497 | # TAG: sslpassword_program | ||
2498 | # Note: This option is only available if Squid is rebuilt with the | ||
2499 | # --with-openssl | ||
2500 | # | ||
2501 | # Specify a program used for entering SSL key passphrases | ||
2502 | # when using encrypted SSL certificate keys. If not specified | ||
2503 | # keys must either be unencrypted, or Squid started with the -N | ||
2504 | # option to allow it to query interactively for the passphrase. | ||
2505 | # | ||
2506 | # The key file name is given as argument to the program allowing | ||
2507 | # selection of the right password if you have multiple encrypted | ||
2508 | # keys. | ||
2509 | #Default: | ||
2510 | # none | ||
2511 | |||
2512 | # OPTIONS RELATING TO EXTERNAL SSL_CRTD | ||
2513 | # ----------------------------------------------------------------------------- | ||
2514 | |||
2515 | # TAG: sslcrtd_program | ||
2516 | # Note: This option is only available if Squid is rebuilt with the | ||
2517 | # --enable-ssl-crtd | ||
2518 | # | ||
2519 | # Specify the location and options of the executable for ssl_crtd process. | ||
2520 | # /usr/lib/squid/ssl_crtd program requires -s and -M parameters | ||
2521 | # For more information use: | ||
2522 | # /usr/lib/squid/ssl_crtd -h | ||
2523 | #Default: | ||
2524 | # sslcrtd_program /usr/lib/squid/ssl_crtd -s /var/lib/ssl_db -M 4MB | ||
2525 | |||
2526 | # TAG: sslcrtd_children | ||
2527 | # Note: This option is only available if Squid is rebuilt with the | ||
2528 | # --enable-ssl-crtd | ||
2529 | # | ||
2530 | # The maximum number of processes spawn to service ssl server. | ||
2531 | # The maximum this may be safely set to is 32. | ||
2532 | # | ||
2533 | # The startup= and idle= options allow some measure of skew in your | ||
2534 | # tuning. | ||
2535 | # | ||
2536 | # startup=N | ||
2537 | # | ||
2538 | # Sets the minimum number of processes to spawn when Squid | ||
2539 | # starts or reconfigures. When set to zero the first request will | ||
2540 | # cause spawning of the first child process to handle it. | ||
2541 | # | ||
2542 | # Starting too few children temporary slows Squid under load while it | ||
2543 | # tries to spawn enough additional processes to cope with traffic. | ||
2544 | # | ||
2545 | # idle=N | ||
2546 | # | ||
2547 | # Sets a minimum of how many processes Squid is to try and keep available | ||
2548 | # at all times. When traffic begins to rise above what the existing | ||
2549 | # processes can handle this many more will be spawned up to the maximum | ||
2550 | # configured. A minimum setting of 1 is required. | ||
2551 | # | ||
2552 | # You must have at least one ssl_crtd process. | ||
2553 | #Default: | ||
2554 | # sslcrtd_children 32 startup=5 idle=1 | ||
2555 | |||
2556 | # TAG: sslcrtvalidator_program | ||
2557 | # Note: This option is only available if Squid is rebuilt with the | ||
2558 | # --with-openssl | ||
2559 | # | ||
2560 | # Specify the location and options of the executable for ssl_crt_validator | ||
2561 | # process. | ||
2562 | # | ||
2563 | # Usage: sslcrtvalidator_program [ttl=n] [cache=n] path ... | ||
2564 | # | ||
2565 | # Options: | ||
2566 | # ttl=n TTL in seconds for cached results. The default is 60 secs | ||
2567 | # cache=n limit the result cache size. The default value is 2048 | ||
2568 | #Default: | ||
2569 | # none | ||
2570 | |||
2571 | # TAG: sslcrtvalidator_children | ||
2572 | # Note: This option is only available if Squid is rebuilt with the | ||
2573 | # --with-openssl | ||
2574 | # | ||
2575 | # The maximum number of processes spawn to service SSL server. | ||
2576 | # The maximum this may be safely set to is 32. | ||
2577 | # | ||
2578 | # The startup= and idle= options allow some measure of skew in your | ||
2579 | # tuning. | ||
2580 | # | ||
2581 | # startup=N | ||
2582 | # | ||
2583 | # Sets the minimum number of processes to spawn when Squid | ||
2584 | # starts or reconfigures. When set to zero the first request will | ||
2585 | # cause spawning of the first child process to handle it. | ||
2586 | # | ||
2587 | # Starting too few children temporary slows Squid under load while it | ||
2588 | # tries to spawn enough additional processes to cope with traffic. | ||
2589 | # | ||
2590 | # idle=N | ||
2591 | # | ||
2592 | # Sets a minimum of how many processes Squid is to try and keep available | ||
2593 | # at all times. When traffic begins to rise above what the existing | ||
2594 | # processes can handle this many more will be spawned up to the maximum | ||
2595 | # configured. A minimum setting of 1 is required. | ||
2596 | # | ||
2597 | # concurrency= | ||
2598 | # | ||
2599 | # The number of requests each certificate validator helper can handle in | ||
2600 | # parallel. A value of 0 indicates the certficate validator does not | ||
2601 | # support concurrency. Defaults to 1. | ||
2602 | # | ||
2603 | # When this directive is set to a value >= 1 then the protocol | ||
2604 | # used to communicate with the helper is modified to include | ||
2605 | # a request ID in front of the request/response. The request | ||
2606 | # ID from the request must be echoed back with the response | ||
2607 | # to that request. | ||
2608 | # | ||
2609 | # You must have at least one ssl_crt_validator process. | ||
2610 | #Default: | ||
2611 | # sslcrtvalidator_children 32 startup=5 idle=1 concurrency=1 | ||
2612 | |||
2613 | # OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM | ||
2614 | # ----------------------------------------------------------------------------- | ||
2615 | |||
2616 | # TAG: cache_peer | ||
2617 | # To specify other caches in a hierarchy, use the format: | ||
2618 | # | ||
2619 | # cache_peer hostname type http-port icp-port [options] | ||
2620 | # | ||
2621 | # For example, | ||
2622 | # | ||
2623 | # # proxy icp | ||
2624 | # # hostname type port port options | ||
2625 | # # -------------------- -------- ----- ----- ----------- | ||
2626 | # cache_peer parent.foo.net parent 3128 3130 default | ||
2627 | # cache_peer sib1.foo.net sibling 3128 3130 proxy-only | ||
2628 | # cache_peer sib2.foo.net sibling 3128 3130 proxy-only | ||
2629 | # cache_peer example.com parent 80 0 default | ||
2630 | # cache_peer cdn.example.com sibling 3128 0 | ||
2631 | # | ||
2632 | # type: either 'parent', 'sibling', or 'multicast'. | ||
2633 | # | ||
2634 | # proxy-port: The port number where the peer accept HTTP requests. | ||
2635 | # For other Squid proxies this is usually 3128 | ||
2636 | # For web servers this is usually 80 | ||
2637 | # | ||
2638 | # icp-port: Used for querying neighbor caches about objects. | ||
2639 | # Set to 0 if the peer does not support ICP or HTCP. | ||
2640 | # See ICP and HTCP options below for additional details. | ||
2641 | # | ||
2642 | # | ||
2643 | # ==== ICP OPTIONS ==== | ||
2644 | # | ||
2645 | # You MUST also set icp_port and icp_access explicitly when using these options. | ||
2646 | # The defaults will prevent peer traffic using ICP. | ||
2647 | # | ||
2648 | # | ||
2649 | # no-query Disable ICP queries to this neighbor. | ||
2650 | # | ||
2651 | # multicast-responder | ||
2652 | # Indicates the named peer is a member of a multicast group. | ||
2653 | # ICP queries will not be sent directly to the peer, but ICP | ||
2654 | # replies will be accepted from it. | ||
2655 | # | ||
2656 | # closest-only Indicates that, for ICP_OP_MISS replies, we'll only forward | ||
2657 | # CLOSEST_PARENT_MISSes and never FIRST_PARENT_MISSes. | ||
2658 | # | ||
2659 | # background-ping | ||
2660 | # To only send ICP queries to this neighbor infrequently. | ||
2661 | # This is used to keep the neighbor round trip time updated | ||
2662 | # and is usually used in conjunction with weighted-round-robin. | ||
2663 | # | ||
2664 | # | ||
2665 | # ==== HTCP OPTIONS ==== | ||
2666 | # | ||
2667 | # You MUST also set htcp_port and htcp_access explicitly when using these options. | ||
2668 | # The defaults will prevent peer traffic using HTCP. | ||
2669 | # | ||
2670 | # | ||
2671 | # htcp Send HTCP, instead of ICP, queries to the neighbor. | ||
2672 | # You probably also want to set the "icp-port" to 4827 | ||
2673 | # instead of 3130. This directive accepts a comma separated | ||
2674 | # list of options described below. | ||
2675 | # | ||
2676 | # htcp=oldsquid Send HTCP to old Squid versions (2.5 or earlier). | ||
2677 | # | ||
2678 | # htcp=no-clr Send HTCP to the neighbor but without | ||
2679 | # sending any CLR requests. This cannot be used with | ||
2680 | # only-clr. | ||
2681 | # | ||
2682 | # htcp=only-clr Send HTCP to the neighbor but ONLY CLR requests. | ||
2683 | # This cannot be used with no-clr. | ||
2684 | # | ||
2685 | # htcp=no-purge-clr | ||
2686 | # Send HTCP to the neighbor including CLRs but only when | ||
2687 | # they do not result from PURGE requests. | ||
2688 | # | ||
2689 | # htcp=forward-clr | ||
2690 | # Forward any HTCP CLR requests this proxy receives to the peer. | ||
2691 | # | ||
2692 | # | ||
2693 | # ==== PEER SELECTION METHODS ==== | ||
2694 | # | ||
2695 | # The default peer selection method is ICP, with the first responding peer | ||
2696 | # being used as source. These options can be used for better load balancing. | ||
2697 | # | ||
2698 | # | ||
2699 | # default This is a parent cache which can be used as a "last-resort" | ||
2700 | # if a peer cannot be located by any of the peer-selection methods. | ||
2701 | # If specified more than once, only the first is used. | ||
2702 | # | ||
2703 | # round-robin Load-Balance parents which should be used in a round-robin | ||
2704 | # fashion in the absence of any ICP queries. | ||
2705 | # weight=N can be used to add bias. | ||
2706 | # | ||
2707 | # weighted-round-robin | ||
2708 | # Load-Balance parents which should be used in a round-robin | ||
2709 | # fashion with the frequency of each parent being based on the | ||
2710 | # round trip time. Closer parents are used more often. | ||
2711 | # Usually used for background-ping parents. | ||
2712 | # weight=N can be used to add bias. | ||
2713 | # | ||
2714 | # carp Load-Balance parents which should be used as a CARP array. | ||
2715 | # The requests will be distributed among the parents based on the | ||
2716 | # CARP load balancing hash function based on their weight. | ||
2717 | # | ||
2718 | # userhash Load-balance parents based on the client proxy_auth or ident username. | ||
2719 | # | ||
2720 | # sourcehash Load-balance parents based on the client source IP. | ||
2721 | # | ||
2722 | # multicast-siblings | ||
2723 | # To be used only for cache peers of type "multicast". | ||
2724 | # ALL members of this multicast group have "sibling" | ||
2725 | # relationship with it, not "parent". This is to a multicast | ||
2726 | # group when the requested object would be fetched only from | ||
2727 | # a "parent" cache, anyway. It's useful, e.g., when | ||
2728 | # configuring a pool of redundant Squid proxies, being | ||
2729 | # members of the same multicast group. | ||
2730 | # | ||
2731 | # | ||
2732 | # ==== PEER SELECTION OPTIONS ==== | ||
2733 | # | ||
2734 | # weight=N use to affect the selection of a peer during any weighted | ||
2735 | # peer-selection mechanisms. | ||
2736 | # The weight must be an integer; default is 1, | ||
2737 | # larger weights are favored more. | ||
2738 | # This option does not affect parent selection if a peering | ||
2739 | # protocol is not in use. | ||
2740 | # | ||
2741 | # basetime=N Specify a base amount to be subtracted from round trip | ||
2742 | # times of parents. | ||
2743 | # It is subtracted before division by weight in calculating | ||
2744 | # which parent to fectch from. If the rtt is less than the | ||
2745 | # base time the rtt is set to a minimal value. | ||
2746 | # | ||
2747 | # ttl=N Specify a TTL to use when sending multicast ICP queries | ||
2748 | # to this address. | ||
2749 | # Only useful when sending to a multicast group. | ||
2750 | # Because we don't accept ICP replies from random | ||
2751 | # hosts, you must configure other group members as | ||
2752 | # peers with the 'multicast-responder' option. | ||
2753 | # | ||
2754 | # no-delay To prevent access to this neighbor from influencing the | ||
2755 | # delay pools. | ||
2756 | # | ||
2757 | # digest-url=URL Tell Squid to fetch the cache digest (if digests are | ||
2758 | # enabled) for this host from the specified URL rather | ||
2759 | # than the Squid default location. | ||
2760 | # | ||
2761 | # | ||
2762 | # ==== CARP OPTIONS ==== | ||
2763 | # | ||
2764 | # carp-key=key-specification | ||
2765 | # use a different key than the full URL to hash against the peer. | ||
2766 | # the key-specification is a comma-separated list of the keywords | ||
2767 | # scheme, host, port, path, params | ||
2768 | # Order is not important. | ||
2769 | # | ||
2770 | # ==== ACCELERATOR / REVERSE-PROXY OPTIONS ==== | ||
2771 | # | ||
2772 | # originserver Causes this parent to be contacted as an origin server. | ||
2773 | # Meant to be used in accelerator setups when the peer | ||
2774 | # is a web server. | ||
2775 | # | ||
2776 | # forceddomain=name | ||
2777 | # Set the Host header of requests forwarded to this peer. | ||
2778 | # Useful in accelerator setups where the server (peer) | ||
2779 | # expects a certain domain name but clients may request | ||
2780 | # others. ie example.com or www.example.com | ||
2781 | # | ||
2782 | # no-digest Disable request of cache digests. | ||
2783 | # | ||
2784 | # no-netdb-exchange | ||
2785 | # Disables requesting ICMP RTT database (NetDB). | ||
2786 | # | ||
2787 | # | ||
2788 | # ==== AUTHENTICATION OPTIONS ==== | ||
2789 | # | ||
2790 | # login=user:password | ||
2791 | # If this is a personal/workgroup proxy and your parent | ||
2792 | # requires proxy authentication. | ||
2793 | # | ||
2794 | # Note: The string can include URL escapes (i.e. %20 for | ||
2795 | # spaces). This also means % must be written as %%. | ||
2796 | # | ||
2797 | # login=PASSTHRU | ||
2798 | # Send login details received from client to this peer. | ||
2799 | # Both Proxy- and WWW-Authorization headers are passed | ||
2800 | # without alteration to the peer. | ||
2801 | # Authentication is not required by Squid for this to work. | ||
2802 | # | ||
2803 | # Note: This will pass any form of authentication but | ||
2804 | # only Basic auth will work through a proxy unless the | ||
2805 | # connection-auth options are also used. | ||
2806 | # | ||
2807 | # login=PASS Send login details received from client to this peer. | ||
2808 | # Authentication is not required by this option. | ||
2809 | # | ||
2810 | # If there are no client-provided authentication headers | ||
2811 | # to pass on, but username and password are available | ||
2812 | # from an external ACL user= and password= result tags | ||
2813 | # they may be sent instead. | ||
2814 | # | ||
2815 | # Note: To combine this with proxy_auth both proxies must | ||
2816 | # share the same user database as HTTP only allows for | ||
2817 | # a single login (one for proxy, one for origin server). | ||
2818 | # Also be warned this will expose your users proxy | ||
2819 | # password to the peer. USE WITH CAUTION | ||
2820 | # | ||
2821 | # login=*:password | ||
2822 | # Send the username to the upstream cache, but with a | ||
2823 | # fixed password. This is meant to be used when the peer | ||
2824 | # is in another administrative domain, but it is still | ||
2825 | # needed to identify each user. | ||
2826 | # The star can optionally be followed by some extra | ||
2827 | # information which is added to the username. This can | ||
2828 | # be used to identify this proxy to the peer, similar to | ||
2829 | # the login=username:password option above. | ||
2830 | # | ||
2831 | # login=NEGOTIATE | ||
2832 | # If this is a personal/workgroup proxy and your parent | ||
2833 | # requires a secure proxy authentication. | ||
2834 | # The first principal from the default keytab or defined by | ||
2835 | # the environment variable KRB5_KTNAME will be used. | ||
2836 | # | ||
2837 | # WARNING: The connection may transmit requests from multiple | ||
2838 | # clients. Negotiate often assumes end-to-end authentication | ||
2839 | # and a single-client. Which is not strictly true here. | ||
2840 | # | ||
2841 | # login=NEGOTIATE:principal_name | ||
2842 | # If this is a personal/workgroup proxy and your parent | ||
2843 | # requires a secure proxy authentication. | ||
2844 | # The principal principal_name from the default keytab or | ||
2845 | # defined by the environment variable KRB5_KTNAME will be | ||
2846 | # used. | ||
2847 | # | ||
2848 | # WARNING: The connection may transmit requests from multiple | ||
2849 | # clients. Negotiate often assumes end-to-end authentication | ||
2850 | # and a single-client. Which is not strictly true here. | ||
2851 | # | ||
2852 | # connection-auth=on|off | ||
2853 | # Tell Squid that this peer does or not support Microsoft | ||
2854 | # connection oriented authentication, and any such | ||
2855 | # challenges received from there should be ignored. | ||
2856 | # Default is auto to automatically determine the status | ||
2857 | # of the peer. | ||
2858 | # | ||
2859 | # | ||
2860 | # ==== SSL / HTTPS / TLS OPTIONS ==== | ||
2861 | # | ||
2862 | # ssl Encrypt connections to this peer with SSL/TLS. | ||
2863 | # | ||
2864 | # sslcert=/path/to/ssl/certificate | ||
2865 | # A client SSL certificate to use when connecting to | ||
2866 | # this peer. | ||
2867 | # | ||
2868 | # sslkey=/path/to/ssl/key | ||
2869 | # The private SSL key corresponding to sslcert above. | ||
2870 | # If 'sslkey' is not specified 'sslcert' is assumed to | ||
2871 | # reference a combined file containing both the | ||
2872 | # certificate and the key. | ||
2873 | # | ||
2874 | # Notes: | ||
2875 | # | ||
2876 | # On Debian/Ubuntu systems a default snakeoil certificate is | ||
2877 | # available in /etc/ssl and users can set: | ||
2878 | # | ||
2879 | # cert=/etc/ssl/certs/ssl-cert-snakeoil.pem | ||
2880 | # | ||
2881 | # and | ||
2882 | # | ||
2883 | # key=/etc/ssl/private/ssl-cert-snakeoil.key | ||
2884 | # | ||
2885 | # for testing. | ||
2886 | # | ||
2887 | # sslversion=1|2|3|4|5|6 | ||
2888 | # The SSL version to use when connecting to this peer | ||
2889 | # 1 = automatic (default) | ||
2890 | # 2 = SSL v2 only | ||
2891 | # 3 = SSL v3 only | ||
2892 | # 4 = TLS v1.0 only | ||
2893 | # 5 = TLS v1.1 only | ||
2894 | # 6 = TLS v1.2 only | ||
2895 | # | ||
2896 | # sslcipher=... The list of valid SSL ciphers to use when connecting | ||
2897 | # to this peer. | ||
2898 | # | ||
2899 | # ssloptions=... Specify various SSL implementation options: | ||
2900 | # | ||
2901 | # NO_SSLv2 Disallow the use of SSLv2 | ||
2902 | # NO_SSLv3 Disallow the use of SSLv3 | ||
2903 | # NO_TLSv1 Disallow the use of TLSv1.0 | ||
2904 | # NO_TLSv1_1 Disallow the use of TLSv1.1 | ||
2905 | # NO_TLSv1_2 Disallow the use of TLSv1.2 | ||
2906 | # | ||
2907 | # SINGLE_DH_USE | ||
2908 | # Always create a new key when using | ||
2909 | # temporary/ephemeral DH key exchanges | ||
2910 | # | ||
2911 | # NO_TICKET | ||
2912 | # Disable use of RFC5077 session tickets. Some servers | ||
2913 | # may have problems understanding the TLS extension due | ||
2914 | # to ambiguous specification in RFC4507. | ||
2915 | # | ||
2916 | # ALL Enable various bug workarounds | ||
2917 | # suggested as "harmless" by OpenSSL | ||
2918 | # Be warned that this reduces SSL/TLS | ||
2919 | # strength to some attacks. | ||
2920 | # | ||
2921 | # See the OpenSSL SSL_CTX_set_options documentation for a | ||
2922 | # more complete list. | ||
2923 | # | ||
2924 | # sslcafile=... A file containing additional CA certificates to use | ||
2925 | # when verifying the peer certificate. | ||
2926 | # | ||
2927 | # sslcapath=... A directory containing additional CA certificates to | ||
2928 | # use when verifying the peer certificate. | ||
2929 | # | ||
2930 | # sslcrlfile=... A certificate revocation list file to use when | ||
2931 | # verifying the peer certificate. | ||
2932 | # | ||
2933 | # sslflags=... Specify various flags modifying the SSL implementation: | ||
2934 | # | ||
2935 | # DONT_VERIFY_PEER | ||
2936 | # Accept certificates even if they fail to | ||
2937 | # verify. | ||
2938 | # NO_DEFAULT_CA | ||
2939 | # Don't use the default CA list built in | ||
2940 | # to OpenSSL. | ||
2941 | # DONT_VERIFY_DOMAIN | ||
2942 | # Don't verify the peer certificate | ||
2943 | # matches the server name | ||
2944 | # | ||
2945 | # ssldomain= The peer name as advertised in it's certificate. | ||
2946 | # Used for verifying the correctness of the received peer | ||
2947 | # certificate. If not specified the peer hostname will be | ||
2948 | # used. | ||
2949 | # | ||
2950 | # front-end-https | ||
2951 | # Enable the "Front-End-Https: On" header needed when | ||
2952 | # using Squid as a SSL frontend in front of Microsoft OWA. | ||
2953 | # See MS KB document Q307347 for details on this header. | ||
2954 | # If set to auto the header will only be added if the | ||
2955 | # request is forwarded as a https:// URL. | ||
2956 | # | ||
2957 | # | ||
2958 | # ==== GENERAL OPTIONS ==== | ||
2959 | # | ||
2960 | # connect-timeout=N | ||
2961 | # A peer-specific connect timeout. | ||
2962 | # Also see the peer_connect_timeout directive. | ||
2963 | # | ||
2964 | # connect-fail-limit=N | ||
2965 | # How many times connecting to a peer must fail before | ||
2966 | # it is marked as down. Standby connection failures | ||
2967 | # count towards this limit. Default is 10. | ||
2968 | # | ||
2969 | # allow-miss Disable Squid's use of only-if-cached when forwarding | ||
2970 | # requests to siblings. This is primarily useful when | ||
2971 | # icp_hit_stale is used by the sibling. Excessive use | ||
2972 | # of this option may result in forwarding loops. One way | ||
2973 | # to prevent peering loops when using this option, is to | ||
2974 | # deny cache peer usage on requests from a peer: | ||
2975 | # acl fromPeer ... | ||
2976 | # cache_peer_access peerName deny fromPeer | ||
2977 | # | ||
2978 | # max-conn=N Limit the number of concurrent connections the Squid | ||
2979 | # may open to this peer, including already opened idle | ||
2980 | # and standby connections. There is no peer-specific | ||
2981 | # connection limit by default. | ||
2982 | # | ||
2983 | # A peer exceeding the limit is not used for new | ||
2984 | # requests unless a standby connection is available. | ||
2985 | # | ||
2986 | # max-conn currently works poorly with idle persistent | ||
2987 | # connections: When a peer reaches its max-conn limit, | ||
2988 | # and there are idle persistent connections to the peer, | ||
2989 | # the peer may not be selected because the limiting code | ||
2990 | # does not know whether Squid can reuse those idle | ||
2991 | # connections. | ||
2992 | # | ||
2993 | # standby=N Maintain a pool of N "hot standby" connections to an | ||
2994 | # UP peer, available for requests when no idle | ||
2995 | # persistent connection is available (or safe) to use. | ||
2996 | # By default and with zero N, no such pool is maintained. | ||
2997 | # N must not exceed the max-conn limit (if any). | ||
2998 | # | ||
2999 | # At start or after reconfiguration, Squid opens new TCP | ||
3000 | # standby connections until there are N connections | ||
3001 | # available and then replenishes the standby pool as | ||
3002 | # opened connections are used up for requests. A used | ||
3003 | # connection never goes back to the standby pool, but | ||
3004 | # may go to the regular idle persistent connection pool | ||
3005 | # shared by all peers and origin servers. | ||
3006 | # | ||
3007 | # Squid never opens multiple new standby connections | ||
3008 | # concurrently. This one-at-a-time approach minimizes | ||
3009 | # flooding-like effect on peers. Furthermore, just a few | ||
3010 | # standby connections should be sufficient in most cases | ||
3011 | # to supply most new requests with a ready-to-use | ||
3012 | # connection. | ||
3013 | # | ||
3014 | # Standby connections obey server_idle_pconn_timeout. | ||
3015 | # For the feature to work as intended, the peer must be | ||
3016 | # configured to accept and keep them open longer than | ||
3017 | # the idle timeout at the connecting Squid, to minimize | ||
3018 | # race conditions typical to idle used persistent | ||
3019 | # connections. Default request_timeout and | ||
3020 | # server_idle_pconn_timeout values ensure such a | ||
3021 | # configuration. | ||
3022 | # | ||
3023 | # name=xxx Unique name for the peer. | ||
3024 | # Required if you have multiple peers on the same host | ||
3025 | # but different ports. | ||
3026 | # This name can be used in cache_peer_access and similar | ||
3027 | # directives to identify the peer. | ||
3028 | # Can be used by outgoing access controls through the | ||
3029 | # peername ACL type. | ||
3030 | # | ||
3031 | # no-tproxy Do not use the client-spoof TPROXY support when forwarding | ||
3032 | # requests to this peer. Use normal address selection instead. | ||
3033 | # This overrides the spoof_client_ip ACL. | ||
3034 | # | ||
3035 | # proxy-only objects fetched from the peer will not be stored locally. | ||
3036 | # | ||
3037 | #Default: | ||
3038 | # none | ||
3039 | |||
3040 | # TAG: cache_peer_domain | ||
3041 | # Use to limit the domains for which a neighbor cache will be | ||
3042 | # queried. | ||
3043 | # | ||
3044 | # Usage: | ||
3045 | # cache_peer_domain cache-host domain [domain ...] | ||
3046 | # cache_peer_domain cache-host !domain | ||
3047 | # | ||
3048 | # For example, specifying | ||
3049 | # | ||
3050 | # cache_peer_domain parent.foo.net .edu | ||
3051 | # | ||
3052 | # has the effect such that UDP query packets are sent to | ||
3053 | # 'bigserver' only when the requested object exists on a | ||
3054 | # server in the .edu domain. Prefixing the domainname | ||
3055 | # with '!' means the cache will be queried for objects | ||
3056 | # NOT in that domain. | ||
3057 | # | ||
3058 | # NOTE: * Any number of domains may be given for a cache-host, | ||
3059 | # either on the same or separate lines. | ||
3060 | # * When multiple domains are given for a particular | ||
3061 | # cache-host, the first matched domain is applied. | ||
3062 | # * Cache hosts with no domain restrictions are queried | ||
3063 | # for all requests. | ||
3064 | # * There are no defaults. | ||
3065 | # * There is also a 'cache_peer_access' tag in the ACL | ||
3066 | # section. | ||
3067 | #Default: | ||
3068 | # none | ||
3069 | |||
3070 | # TAG: cache_peer_access | ||
3071 | # Restricts usage of cache_peer proxies. | ||
3072 | # | ||
3073 | # Usage: | ||
3074 | # cache_peer_access peer-name allow|deny [!]aclname ... | ||
3075 | # | ||
3076 | # For the required peer-name parameter, use either the value of the | ||
3077 | # cache_peer name=value parameter or, if name=value is missing, the | ||
3078 | # cache_peer hostname parameter. | ||
3079 | # | ||
3080 | # This directive narrows down the selection of peering candidates, but | ||
3081 | # does not determine the order in which the selected candidates are | ||
3082 | # contacted. That order is determined by the peer selection algorithms | ||
3083 | # (see PEER SELECTION sections in the cache_peer documentation). | ||
3084 | # | ||
3085 | # If a deny rule matches, the corresponding peer will not be contacted | ||
3086 | # for the current transaction -- Squid will not send ICP queries and | ||
3087 | # will not forward HTTP requests to that peer. An allow match leaves | ||
3088 | # the corresponding peer in the selection. The first match for a given | ||
3089 | # peer wins for that peer. | ||
3090 | # | ||
3091 | # The relative order of cache_peer_access directives for the same peer | ||
3092 | # matters. The relative order of any two cache_peer_access directives | ||
3093 | # for different peers does not matter. To ease interpretation, it is a | ||
3094 | # good idea to group cache_peer_access directives for the same peer | ||
3095 | # together. | ||
3096 | # | ||
3097 | # A single cache_peer_access directive may be evaluated multiple times | ||
3098 | # for a given transaction because individual peer selection algorithms | ||
3099 | # may check it independently from each other. These redundant checks | ||
3100 | # may be optimized away in future Squid versions. | ||
3101 | # | ||
3102 | # This clause only supports fast acl types. | ||
3103 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
3104 | #Default: | ||
3105 | # No peer usage restrictions. | ||
3106 | |||
3107 | # TAG: neighbor_type_domain | ||
3108 | # Modify the cache_peer neighbor type when passing requests | ||
3109 | # about specific domains to the peer. | ||
3110 | # | ||
3111 | # Usage: | ||
3112 | # neighbor_type_domain neighbor parent|sibling domain domain ... | ||
3113 | # | ||
3114 | # For example: | ||
3115 | # cache_peer foo.example.com parent 3128 3130 | ||
3116 | # neighbor_type_domain foo.example.com sibling .au .de | ||
3117 | # | ||
3118 | # The above configuration treats all requests to foo.example.com as a | ||
3119 | # parent proxy unless the request is for a .au or .de ccTLD domain name. | ||
3120 | #Default: | ||
3121 | # The peer type from cache_peer directive is used for all requests to that peer. | ||
3122 | |||
3123 | # TAG: dead_peer_timeout (seconds) | ||
3124 | # This controls how long Squid waits to declare a peer cache | ||
3125 | # as "dead." If there are no ICP replies received in this | ||
3126 | # amount of time, Squid will declare the peer dead and not | ||
3127 | # expect to receive any further ICP replies. However, it | ||
3128 | # continues to send ICP queries, and will mark the peer as | ||
3129 | # alive upon receipt of the first subsequent ICP reply. | ||
3130 | # | ||
3131 | # This timeout also affects when Squid expects to receive ICP | ||
3132 | # replies from peers. If more than 'dead_peer' seconds have | ||
3133 | # passed since the last ICP reply was received, Squid will not | ||
3134 | # expect to receive an ICP reply on the next query. Thus, if | ||
3135 | # your time between requests is greater than this timeout, you | ||
3136 | # will see a lot of requests sent DIRECT to origin servers | ||
3137 | # instead of to your parents. | ||
3138 | #Default: | ||
3139 | # dead_peer_timeout 10 seconds | ||
3140 | |||
3141 | # TAG: forward_max_tries | ||
3142 | # Controls how many different forward paths Squid will try | ||
3143 | # before giving up. See also forward_timeout. | ||
3144 | # | ||
3145 | # NOTE: connect_retries (default: none) can make each of these | ||
3146 | # possible forwarding paths be tried multiple times. | ||
3147 | #Default: | ||
3148 | # forward_max_tries 25 | ||
3149 | |||
3150 | # MEMORY CACHE OPTIONS | ||
3151 | # ----------------------------------------------------------------------------- | ||
3152 | |||
3153 | # TAG: cache_mem (bytes) | ||
3154 | # NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS SIZE. | ||
3155 | # IT ONLY PLACES A LIMIT ON HOW MUCH ADDITIONAL MEMORY SQUID WILL | ||
3156 | # USE AS A MEMORY CACHE OF OBJECTS. SQUID USES MEMORY FOR OTHER | ||
3157 | # THINGS AS WELL. SEE THE SQUID FAQ SECTION 8 FOR DETAILS. | ||
3158 | # | ||
3159 | # 'cache_mem' specifies the ideal amount of memory to be used | ||
3160 | # for: | ||
3161 | # * In-Transit objects | ||
3162 | # * Hot Objects | ||
3163 | # * Negative-Cached objects | ||
3164 | # | ||
3165 | # Data for these objects are stored in 4 KB blocks. This | ||
3166 | # parameter specifies the ideal upper limit on the total size of | ||
3167 | # 4 KB blocks allocated. In-Transit objects take the highest | ||
3168 | # priority. | ||
3169 | # | ||
3170 | # In-transit objects have priority over the others. When | ||
3171 | # additional space is needed for incoming data, negative-cached | ||
3172 | # and hot objects will be released. In other words, the | ||
3173 | # negative-cached and hot objects will fill up any unused space | ||
3174 | # not needed for in-transit objects. | ||
3175 | # | ||
3176 | # If circumstances require, this limit will be exceeded. | ||
3177 | # Specifically, if your incoming request rate requires more than | ||
3178 | # 'cache_mem' of memory to hold in-transit objects, Squid will | ||
3179 | # exceed this limit to satisfy the new requests. When the load | ||
3180 | # decreases, blocks will be freed until the high-water mark is | ||
3181 | # reached. Thereafter, blocks will be used to store hot | ||
3182 | # objects. | ||
3183 | # | ||
3184 | # If shared memory caching is enabled, Squid does not use the shared | ||
3185 | # cache space for in-transit objects, but they still consume as much | ||
3186 | # local memory as they need. For more details about the shared memory | ||
3187 | # cache, see memory_cache_shared. | ||
3188 | #Default: | ||
3189 | # cache_mem 256 MB | ||
3190 | |||
3191 | # TAG: maximum_object_size_in_memory (bytes) | ||
3192 | # Objects greater than this size will not be attempted to kept in | ||
3193 | # the memory cache. This should be set high enough to keep objects | ||
3194 | # accessed frequently in memory to improve performance whilst low | ||
3195 | # enough to keep larger objects from hoarding cache_mem. | ||
3196 | #Default: | ||
3197 | # maximum_object_size_in_memory 512 KB | ||
3198 | |||
3199 | # TAG: memory_cache_shared on|off | ||
3200 | # Controls whether the memory cache is shared among SMP workers. | ||
3201 | # | ||
3202 | # The shared memory cache is meant to occupy cache_mem bytes and replace | ||
3203 | # the non-shared memory cache, although some entities may still be | ||
3204 | # cached locally by workers for now (e.g., internal and in-transit | ||
3205 | # objects may be served from a local memory cache even if shared memory | ||
3206 | # caching is enabled). | ||
3207 | # | ||
3208 | # By default, the memory cache is shared if and only if all of the | ||
3209 | # following conditions are satisfied: Squid runs in SMP mode with | ||
3210 | # multiple workers, cache_mem is positive, and Squid environment | ||
3211 | # supports required IPC primitives (e.g., POSIX shared memory segments | ||
3212 | # and GCC-style atomic operations). | ||
3213 | # | ||
3214 | # To avoid blocking locks, shared memory uses opportunistic algorithms | ||
3215 | # that do not guarantee that every cachable entity that could have been | ||
3216 | # shared among SMP workers will actually be shared. | ||
3217 | #Default: | ||
3218 | # "on" where supported if doing memory caching with multiple SMP workers. | ||
3219 | |||
3220 | # TAG: memory_cache_mode | ||
3221 | # Controls which objects to keep in the memory cache (cache_mem) | ||
3222 | # | ||
3223 | # always Keep most recently fetched objects in memory (default) | ||
3224 | # | ||
3225 | # disk Only disk cache hits are kept in memory, which means | ||
3226 | # an object must first be cached on disk and then hit | ||
3227 | # a second time before cached in memory. | ||
3228 | # | ||
3229 | # network Only objects fetched from network is kept in memory | ||
3230 | #Default: | ||
3231 | # Keep the most recently fetched objects in memory | ||
3232 | |||
3233 | # TAG: memory_replacement_policy | ||
3234 | # The memory replacement policy parameter determines which | ||
3235 | # objects are purged from memory when memory space is needed. | ||
3236 | # | ||
3237 | # See cache_replacement_policy for details on algorithms. | ||
3238 | #Default: | ||
3239 | # memory_replacement_policy lru | ||
3240 | |||
3241 | # DISK CACHE OPTIONS | ||
3242 | # ----------------------------------------------------------------------------- | ||
3243 | |||
3244 | # TAG: cache_replacement_policy | ||
3245 | # The cache replacement policy parameter determines which | ||
3246 | # objects are evicted (replaced) when disk space is needed. | ||
3247 | # | ||
3248 | # lru : Squid's original list based LRU policy | ||
3249 | # heap GDSF : Greedy-Dual Size Frequency | ||
3250 | # heap LFUDA: Least Frequently Used with Dynamic Aging | ||
3251 | # heap LRU : LRU policy implemented using a heap | ||
3252 | # | ||
3253 | # Applies to any cache_dir lines listed below this directive. | ||
3254 | # | ||
3255 | # The LRU policies keeps recently referenced objects. | ||
3256 | # | ||
3257 | # The heap GDSF policy optimizes object hit rate by keeping smaller | ||
3258 | # popular objects in cache so it has a better chance of getting a | ||
3259 | # hit. It achieves a lower byte hit rate than LFUDA though since | ||
3260 | # it evicts larger (possibly popular) objects. | ||
3261 | # | ||
3262 | # The heap LFUDA policy keeps popular objects in cache regardless of | ||
3263 | # their size and thus optimizes byte hit rate at the expense of | ||
3264 | # hit rate since one large, popular object will prevent many | ||
3265 | # smaller, slightly less popular objects from being cached. | ||
3266 | # | ||
3267 | # Both policies utilize a dynamic aging mechanism that prevents | ||
3268 | # cache pollution that can otherwise occur with frequency-based | ||
3269 | # replacement policies. | ||
3270 | # | ||
3271 | # NOTE: if using the LFUDA replacement policy you should increase | ||
3272 | # the value of maximum_object_size above its default of 4 MB to | ||
3273 | # to maximize the potential byte hit rate improvement of LFUDA. | ||
3274 | # | ||
3275 | # For more information about the GDSF and LFUDA cache replacement | ||
3276 | # policies see http://www.hpl.hp.com/techreports/1999/HPL-1999-69.html | ||
3277 | # and http://fog.hpl.external.hp.com/techreports/98/HPL-98-173.html. | ||
3278 | #Default: | ||
3279 | # cache_replacement_policy lru | ||
3280 | |||
3281 | # TAG: minimum_object_size (bytes) | ||
3282 | # Objects smaller than this size will NOT be saved on disk. The | ||
3283 | # value is specified in bytes, and the default is 0 KB, which | ||
3284 | # means all responses can be stored. | ||
3285 | #Default: | ||
3286 | # no limit | ||
3287 | |||
3288 | # TAG: maximum_object_size (bytes) | ||
3289 | # Set the default value for max-size parameter on any cache_dir. | ||
3290 | # The value is specified in bytes, and the default is 4 MB. | ||
3291 | # | ||
3292 | # If you wish to get a high BYTES hit ratio, you should probably | ||
3293 | # increase this (one 32 MB object hit counts for 3200 10KB | ||
3294 | # hits). | ||
3295 | # | ||
3296 | # If you wish to increase hit ratio more than you want to | ||
3297 | # save bandwidth you should leave this low. | ||
3298 | # | ||
3299 | # NOTE: if using the LFUDA replacement policy you should increase | ||
3300 | # this value to maximize the byte hit rate improvement of LFUDA! | ||
3301 | # See cache_replacement_policy for a discussion of this policy. | ||
3302 | #Default: | ||
3303 | # maximum_object_size 4 MB | ||
3304 | |||
3305 | # TAG: cache_dir | ||
3306 | # Format: | ||
3307 | # cache_dir Type Directory-Name Fs-specific-data [options] | ||
3308 | # | ||
3309 | # You can specify multiple cache_dir lines to spread the | ||
3310 | # cache among different disk partitions. | ||
3311 | # | ||
3312 | # Type specifies the kind of storage system to use. Only "ufs" | ||
3313 | # is built by default. To enable any of the other storage systems | ||
3314 | # see the --enable-storeio configure option. | ||
3315 | # | ||
3316 | # 'Directory' is a top-level directory where cache swap | ||
3317 | # files will be stored. If you want to use an entire disk | ||
3318 | # for caching, this can be the mount-point directory. | ||
3319 | # The directory must exist and be writable by the Squid | ||
3320 | # process. Squid will NOT create this directory for you. | ||
3321 | # | ||
3322 | # In SMP configurations, cache_dir must not precede the workers option | ||
3323 | # and should use configuration macros or conditionals to give each | ||
3324 | # worker interested in disk caching a dedicated cache directory. | ||
3325 | # | ||
3326 | # | ||
3327 | # ==== The ufs store type ==== | ||
3328 | # | ||
3329 | # "ufs" is the old well-known Squid storage format that has always | ||
3330 | # been there. | ||
3331 | # | ||
3332 | # Usage: | ||
3333 | # cache_dir ufs Directory-Name Mbytes L1 L2 [options] | ||
3334 | # | ||
3335 | # 'Mbytes' is the amount of disk space (MB) to use under this | ||
3336 | # directory. The default is 100 MB. Change this to suit your | ||
3337 | # configuration. Do NOT put the size of your disk drive here. | ||
3338 | # Instead, if you want Squid to use the entire disk drive, | ||
3339 | # subtract 20% and use that value. | ||
3340 | # | ||
3341 | # 'L1' is the number of first-level subdirectories which | ||
3342 | # will be created under the 'Directory'. The default is 16. | ||
3343 | # | ||
3344 | # 'L2' is the number of second-level subdirectories which | ||
3345 | # will be created under each first-level directory. The default | ||
3346 | # is 256. | ||
3347 | # | ||
3348 | # | ||
3349 | # ==== The aufs store type ==== | ||
3350 | # | ||
3351 | # "aufs" uses the same storage format as "ufs", utilizing | ||
3352 | # POSIX-threads to avoid blocking the main Squid process on | ||
3353 | # disk-I/O. This was formerly known in Squid as async-io. | ||
3354 | # | ||
3355 | # Usage: | ||
3356 | # cache_dir aufs Directory-Name Mbytes L1 L2 [options] | ||
3357 | # | ||
3358 | # see argument descriptions under ufs above | ||
3359 | # | ||
3360 | # | ||
3361 | # ==== The diskd store type ==== | ||
3362 | # | ||
3363 | # "diskd" uses the same storage format as "ufs", utilizing a | ||
3364 | # separate process to avoid blocking the main Squid process on | ||
3365 | # disk-I/O. | ||
3366 | # | ||
3367 | # Usage: | ||
3368 | # cache_dir diskd Directory-Name Mbytes L1 L2 [options] [Q1=n] [Q2=n] | ||
3369 | # | ||
3370 | # see argument descriptions under ufs above | ||
3371 | # | ||
3372 | # Q1 specifies the number of unacknowledged I/O requests when Squid | ||
3373 | # stops opening new files. If this many messages are in the queues, | ||
3374 | # Squid won't open new files. Default is 64 | ||
3375 | # | ||
3376 | # Q2 specifies the number of unacknowledged messages when Squid | ||
3377 | # starts blocking. If this many messages are in the queues, | ||
3378 | # Squid blocks until it receives some replies. Default is 72 | ||
3379 | # | ||
3380 | # When Q1 < Q2 (the default), the cache directory is optimized | ||
3381 | # for lower response time at the expense of a decrease in hit | ||
3382 | # ratio. If Q1 > Q2, the cache directory is optimized for | ||
3383 | # higher hit ratio at the expense of an increase in response | ||
3384 | # time. | ||
3385 | # | ||
3386 | # | ||
3387 | # ==== The rock store type ==== | ||
3388 | # | ||
3389 | # Usage: | ||
3390 | # cache_dir rock Directory-Name Mbytes [options] | ||
3391 | # | ||
3392 | # The Rock Store type is a database-style storage. All cached | ||
3393 | # entries are stored in a "database" file, using fixed-size slots. | ||
3394 | # A single entry occupies one or more slots. | ||
3395 | # | ||
3396 | # If possible, Squid using Rock Store creates a dedicated kid | ||
3397 | # process called "disker" to avoid blocking Squid worker(s) on disk | ||
3398 | # I/O. One disker kid is created for each rock cache_dir. Diskers | ||
3399 | # are created only when Squid, running in daemon mode, has support | ||
3400 | # for the IpcIo disk I/O module. | ||
3401 | # | ||
3402 | # swap-timeout=msec: Squid will not start writing a miss to or | ||
3403 | # reading a hit from disk if it estimates that the swap operation | ||
3404 | # will take more than the specified number of milliseconds. By | ||
3405 | # default and when set to zero, disables the disk I/O time limit | ||
3406 | # enforcement. Ignored when using blocking I/O module because | ||
3407 | # blocking synchronous I/O does not allow Squid to estimate the | ||
3408 | # expected swap wait time. | ||
3409 | # | ||
3410 | # max-swap-rate=swaps/sec: Artificially limits disk access using | ||
3411 | # the specified I/O rate limit. Swap out requests that | ||
3412 | # would cause the average I/O rate to exceed the limit are | ||
3413 | # delayed. Individual swap in requests (i.e., hits or reads) are | ||
3414 | # not delayed, but they do contribute to measured swap rate and | ||
3415 | # since they are placed in the same FIFO queue as swap out | ||
3416 | # requests, they may wait longer if max-swap-rate is smaller. | ||
3417 | # This is necessary on file systems that buffer "too | ||
3418 | # many" writes and then start blocking Squid and other processes | ||
3419 | # while committing those writes to disk. Usually used together | ||
3420 | # with swap-timeout to avoid excessive delays and queue overflows | ||
3421 | # when disk demand exceeds available disk "bandwidth". By default | ||
3422 | # and when set to zero, disables the disk I/O rate limit | ||
3423 | # enforcement. Currently supported by IpcIo module only. | ||
3424 | # | ||
3425 | # slot-size=bytes: The size of a database "record" used for | ||
3426 | # storing cached responses. A cached response occupies at least | ||
3427 | # one slot and all database I/O is done using individual slots so | ||
3428 | # increasing this parameter leads to more disk space waste while | ||
3429 | # decreasing it leads to more disk I/O overheads. Should be a | ||
3430 | # multiple of your operating system I/O page size. Defaults to | ||
3431 | # 16KBytes. A housekeeping header is stored with each slot and | ||
3432 | # smaller slot-sizes will be rejected. The header is smaller than | ||
3433 | # 100 bytes. | ||
3434 | # | ||
3435 | # | ||
3436 | # ==== COMMON OPTIONS ==== | ||
3437 | # | ||
3438 | # no-store no new objects should be stored to this cache_dir. | ||
3439 | # | ||
3440 | # min-size=n the minimum object size in bytes this cache_dir | ||
3441 | # will accept. It's used to restrict a cache_dir | ||
3442 | # to only store large objects (e.g. AUFS) while | ||
3443 | # other stores are optimized for smaller objects | ||
3444 | # (e.g. Rock). | ||
3445 | # Defaults to 0. | ||
3446 | # | ||
3447 | # max-size=n the maximum object size in bytes this cache_dir | ||
3448 | # supports. | ||
3449 | # The value in maximum_object_size directive sets | ||
3450 | # the default unless more specific details are | ||
3451 | # available (ie a small store capacity). | ||
3452 | # | ||
3453 | # Note: To make optimal use of the max-size limits you should order | ||
3454 | # the cache_dir lines with the smallest max-size value first. | ||
3455 | # | ||
3456 | #Default: | ||
3457 | # No disk cache. Store cache ojects only in memory. | ||
3458 | # | ||
3459 | |||
3460 | # Uncomment and adjust the following to add a disk cache directory. | ||
3461 | #cache_dir ufs /var/spool/squid 100 16 256 | ||
3462 | |||
3463 | # TAG: store_dir_select_algorithm | ||
3464 | # How Squid selects which cache_dir to use when the response | ||
3465 | # object will fit into more than one. | ||
3466 | # | ||
3467 | # Regardless of which algorithm is used the cache_dir min-size | ||
3468 | # and max-size parameters are obeyed. As such they can affect | ||
3469 | # the selection algorithm by limiting the set of considered | ||
3470 | # cache_dir. | ||
3471 | # | ||
3472 | # Algorithms: | ||
3473 | # | ||
3474 | # least-load | ||
3475 | # | ||
3476 | # This algorithm is suited to caches with similar cache_dir | ||
3477 | # sizes and disk speeds. | ||
3478 | # | ||
3479 | # The disk with the least I/O pending is selected. | ||
3480 | # When there are multiple disks with the same I/O load ranking | ||
3481 | # the cache_dir with most available capacity is selected. | ||
3482 | # | ||
3483 | # When a mix of cache_dir sizes are configured the faster disks | ||
3484 | # have a naturally lower I/O loading and larger disks have more | ||
3485 | # capacity. So space used to store objects and data throughput | ||
3486 | # may be very unbalanced towards larger disks. | ||
3487 | # | ||
3488 | # | ||
3489 | # round-robin | ||
3490 | # | ||
3491 | # This algorithm is suited to caches with unequal cache_dir | ||
3492 | # disk sizes. | ||
3493 | # | ||
3494 | # Each cache_dir is selected in a rotation. The next suitable | ||
3495 | # cache_dir is used. | ||
3496 | # | ||
3497 | # Available cache_dir capacity is only considered in relation | ||
3498 | # to whether the object will fit and meets the min-size and | ||
3499 | # max-size parameters. | ||
3500 | # | ||
3501 | # Disk I/O loading is only considered to prevent overload on slow | ||
3502 | # disks. This algorithm does not spread objects by size, so any | ||
3503 | # I/O loading per-disk may appear very unbalanced and volatile. | ||
3504 | # | ||
3505 | # If several cache_dirs use similar min-size, max-size, or other | ||
3506 | # limits to to reject certain responses, then do not group such | ||
3507 | # cache_dir lines together, to avoid round-robin selection bias | ||
3508 | # towards the first cache_dir after the group. Instead, interleave | ||
3509 | # cache_dir lines from different groups. For example: | ||
3510 | # | ||
3511 | # store_dir_select_algorithm round-robin | ||
3512 | # cache_dir rock /hdd1 ... min-size=100000 | ||
3513 | # cache_dir rock /ssd1 ... max-size=99999 | ||
3514 | # cache_dir rock /hdd2 ... min-size=100000 | ||
3515 | # cache_dir rock /ssd2 ... max-size=99999 | ||
3516 | # cache_dir rock /hdd3 ... min-size=100000 | ||
3517 | # cache_dir rock /ssd3 ... max-size=99999 | ||
3518 | #Default: | ||
3519 | # store_dir_select_algorithm least-load | ||
3520 | |||
3521 | # TAG: max_open_disk_fds | ||
3522 | # To avoid having disk as the I/O bottleneck Squid can optionally | ||
3523 | # bypass the on-disk cache if more than this amount of disk file | ||
3524 | # descriptors are open. | ||
3525 | # | ||
3526 | # A value of 0 indicates no limit. | ||
3527 | #Default: | ||
3528 | # no limit | ||
3529 | |||
3530 | # TAG: cache_swap_low (percent, 0-100) | ||
3531 | # The low-water mark for AUFS/UFS/diskd cache object eviction by | ||
3532 | # the cache_replacement_policy algorithm. | ||
3533 | # | ||
3534 | # Removal begins when the swap (disk) usage of a cache_dir is | ||
3535 | # above this low-water mark and attempts to maintain utilization | ||
3536 | # near the low-water mark. | ||
3537 | # | ||
3538 | # As swap utilization increases towards the high-water mark set | ||
3539 | # by cache_swap_high object eviction becomes more agressive. | ||
3540 | # | ||
3541 | # The value difference in percentages between low- and high-water | ||
3542 | # marks represent an eviction rate of 300 objects per second and | ||
3543 | # the rate continues to scale in agressiveness by multiples of | ||
3544 | # this above the high-water mark. | ||
3545 | # | ||
3546 | # Defaults are 90% and 95%. If you have a large cache, 5% could be | ||
3547 | # hundreds of MB. If this is the case you may wish to set these | ||
3548 | # numbers closer together. | ||
3549 | # | ||
3550 | # See also cache_swap_high and cache_replacement_policy | ||
3551 | #Default: | ||
3552 | # cache_swap_low 90 | ||
3553 | |||
3554 | # TAG: cache_swap_high (percent, 0-100) | ||
3555 | # The high-water mark for AUFS/UFS/diskd cache object eviction by | ||
3556 | # the cache_replacement_policy algorithm. | ||
3557 | # | ||
3558 | # Removal begins when the swap (disk) usage of a cache_dir is | ||
3559 | # above the low-water mark set by cache_swap_low and attempts to | ||
3560 | # maintain utilization near the low-water mark. | ||
3561 | # | ||
3562 | # As swap utilization increases towards this high-water mark object | ||
3563 | # eviction becomes more agressive. | ||
3564 | # | ||
3565 | # The value difference in percentages between low- and high-water | ||
3566 | # marks represent an eviction rate of 300 objects per second and | ||
3567 | # the rate continues to scale in agressiveness by multiples of | ||
3568 | # this above the high-water mark. | ||
3569 | # | ||
3570 | # Defaults are 90% and 95%. If you have a large cache, 5% could be | ||
3571 | # hundreds of MB. If this is the case you may wish to set these | ||
3572 | # numbers closer together. | ||
3573 | # | ||
3574 | # See also cache_swap_low and cache_replacement_policy | ||
3575 | #Default: | ||
3576 | # cache_swap_high 95 | ||
3577 | |||
3578 | # LOGFILE OPTIONS | ||
3579 | # ----------------------------------------------------------------------------- | ||
3580 | |||
3581 | # TAG: logformat | ||
3582 | # Usage: | ||
3583 | # | ||
3584 | # logformat <name> <format specification> | ||
3585 | # | ||
3586 | # Defines an access log format. | ||
3587 | # | ||
3588 | # The <format specification> is a string with embedded % format codes | ||
3589 | # | ||
3590 | # % format codes all follow the same basic structure where all but | ||
3591 | # the formatcode is optional. Output strings are automatically escaped | ||
3592 | # as required according to their context and the output format | ||
3593 | # modifiers are usually not needed, but can be specified if an explicit | ||
3594 | # output format is desired. | ||
3595 | # | ||
3596 | # % ["|[|'|#] [-] [[0]width] [{argument}] formatcode | ||
3597 | # | ||
3598 | # " output in quoted string format | ||
3599 | # [ output in squid text log format as used by log_mime_hdrs | ||
3600 | # # output in URL quoted format | ||
3601 | # ' output as-is | ||
3602 | # | ||
3603 | # - left aligned | ||
3604 | # | ||
3605 | # width minimum and/or maximum field width: | ||
3606 | # [width_min][.width_max] | ||
3607 | # When minimum starts with 0, the field is zero-padded. | ||
3608 | # String values exceeding maximum width are truncated. | ||
3609 | # | ||
3610 | # {arg} argument such as header name etc | ||
3611 | # | ||
3612 | # Format codes: | ||
3613 | # | ||
3614 | # % a literal % character | ||
3615 | # sn Unique sequence number per log line entry | ||
3616 | # err_code The ID of an error response served by Squid or | ||
3617 | # a similar internal error identifier. | ||
3618 | # err_detail Additional err_code-dependent error information. | ||
3619 | # note The annotation specified by the argument. Also | ||
3620 | # logs the adaptation meta headers set by the | ||
3621 | # adaptation_meta configuration parameter. | ||
3622 | # If no argument given all annotations logged. | ||
3623 | # The argument may include a separator to use with | ||
3624 | # annotation values: | ||
3625 | # name[:separator] | ||
3626 | # By default, multiple note values are separated with "," | ||
3627 | # and multiple notes are separated with "\r\n". | ||
3628 | # When logging named notes with %{name}note, the | ||
3629 | # explicitly configured separator is used between note | ||
3630 | # values. When logging all notes with %note, the | ||
3631 | # explicitly configured separator is used between | ||
3632 | # individual notes. There is currently no way to | ||
3633 | # specify both value and notes separators when logging | ||
3634 | # all notes with %note. | ||
3635 | # | ||
3636 | # Connection related format codes: | ||
3637 | # | ||
3638 | # >a Client source IP address | ||
3639 | # >A Client FQDN | ||
3640 | # >p Client source port | ||
3641 | # >eui Client source EUI (MAC address, EUI-48 or EUI-64 identifier) | ||
3642 | # >la Local IP address the client connected to | ||
3643 | # >lp Local port number the client connected to | ||
3644 | # >qos Client connection TOS/DSCP value set by Squid | ||
3645 | # >nfmark Client connection netfilter mark set by Squid | ||
3646 | # | ||
3647 | # la Local listening IP address the client connection was connected to. | ||
3648 | # lp Local listening port number the client connection was connected to. | ||
3649 | # | ||
3650 | # <a Server IP address of the last server or peer connection | ||
3651 | # <A Server FQDN or peer name | ||
3652 | # <p Server port number of the last server or peer connection | ||
3653 | # <la Local IP address of the last server or peer connection | ||
3654 | # <lp Local port number of the last server or peer connection | ||
3655 | # <qos Server connection TOS/DSCP value set by Squid | ||
3656 | # <nfmark Server connection netfilter mark set by Squid | ||
3657 | # | ||
3658 | # Time related format codes: | ||
3659 | # | ||
3660 | # ts Seconds since epoch | ||
3661 | # tu subsecond time (milliseconds) | ||
3662 | # tl Local time. Optional strftime format argument | ||
3663 | # default %d/%b/%Y:%H:%M:%S %z | ||
3664 | # tg GMT time. Optional strftime format argument | ||
3665 | # default %d/%b/%Y:%H:%M:%S %z | ||
3666 | # tr Response time (milliseconds) | ||
3667 | # dt Total time spent making DNS lookups (milliseconds) | ||
3668 | # tS Approximate master transaction start time in | ||
3669 | # <full seconds since epoch>.<fractional seconds> format. | ||
3670 | # Currently, Squid considers the master transaction | ||
3671 | # started when a complete HTTP request header initiating | ||
3672 | # the transaction is received from the client. This is | ||
3673 | # the same value that Squid uses to calculate transaction | ||
3674 | # response time when logging %tr to access.log. Currently, | ||
3675 | # Squid uses millisecond resolution for %tS values, | ||
3676 | # similar to the default access.log "current time" field | ||
3677 | # (%ts.%03tu). | ||
3678 | # | ||
3679 | # Access Control related format codes: | ||
3680 | # | ||
3681 | # et Tag returned by external acl | ||
3682 | # ea Log string returned by external acl | ||
3683 | # un User name (any available) | ||
3684 | # ul User name from authentication | ||
3685 | # ue User name from external acl helper | ||
3686 | # ui User name from ident | ||
3687 | # un A user name. Expands to the first available name | ||
3688 | # from the following list of information sources: | ||
3689 | # - authenticated user name, like %ul | ||
3690 | # - user name supplied by an external ACL, like %ue | ||
3691 | # - SSL client name, like %us | ||
3692 | # - ident user name, like %ui | ||
3693 | # credentials Client credentials. The exact meaning depends on | ||
3694 | # the authentication scheme: For Basic authentication, | ||
3695 | # it is the password; for Digest, the realm sent by the | ||
3696 | # client; for NTLM and Negotiate, the client challenge | ||
3697 | # or client credentials prefixed with "YR " or "KK ". | ||
3698 | # | ||
3699 | # HTTP related format codes: | ||
3700 | # | ||
3701 | # REQUEST | ||
3702 | # | ||
3703 | # [http::]rm Request method (GET/POST etc) | ||
3704 | # [http::]>rm Request method from client | ||
3705 | # [http::]<rm Request method sent to server or peer | ||
3706 | # [http::]ru Request URL from client (historic, filtered for logging) | ||
3707 | # [http::]>ru Request URL from client | ||
3708 | # [http::]<ru Request URL sent to server or peer | ||
3709 | # [http::]>rs Request URL scheme from client | ||
3710 | # [http::]<rs Request URL scheme sent to server or peer | ||
3711 | # [http::]>rd Request URL domain from client | ||
3712 | # [http::]<rd Request URL domain sent to server or peer | ||
3713 | # [http::]>rP Request URL port from client | ||
3714 | # [http::]<rP Request URL port sent to server or peer | ||
3715 | # [http::]rp Request URL path excluding hostname | ||
3716 | # [http::]>rp Request URL path excluding hostname from client | ||
3717 | # [http::]<rp Request URL path excluding hostname sent to server or peer | ||
3718 | # [http::]rv Request protocol version | ||
3719 | # [http::]>rv Request protocol version from client | ||
3720 | # [http::]<rv Request protocol version sent to server or peer | ||
3721 | # | ||
3722 | # [http::]>h Original received request header. | ||
3723 | # Usually differs from the request header sent by | ||
3724 | # Squid, although most fields are often preserved. | ||
3725 | # Accepts optional header field name/value filter | ||
3726 | # argument using name[:[separator]element] format. | ||
3727 | # [http::]>ha Received request header after adaptation and | ||
3728 | # redirection (pre-cache REQMOD vectoring point). | ||
3729 | # Usually differs from the request header sent by | ||
3730 | # Squid, although most fields are often preserved. | ||
3731 | # Optional header name argument as for >h | ||
3732 | # | ||
3733 | # | ||
3734 | # RESPONSE | ||
3735 | # | ||
3736 | # [http::]<Hs HTTP status code received from the next hop | ||
3737 | # [http::]>Hs HTTP status code sent to the client | ||
3738 | # | ||
3739 | # [http::]<h Reply header. Optional header name argument | ||
3740 | # as for >h | ||
3741 | # | ||
3742 | # [http::]mt MIME content type | ||
3743 | # | ||
3744 | # | ||
3745 | # SIZE COUNTERS | ||
3746 | # | ||
3747 | # [http::]st Total size of request + reply traffic with client | ||
3748 | # [http::]>st Total size of request received from client. | ||
3749 | # Excluding chunked encoding bytes. | ||
3750 | # [http::]<st Total size of reply sent to client (after adaptation) | ||
3751 | # | ||
3752 | # [http::]>sh Size of request headers received from client | ||
3753 | # [http::]<sh Size of reply headers sent to client (after adaptation) | ||
3754 | # | ||
3755 | # [http::]<sH Reply high offset sent | ||
3756 | # [http::]<sS Upstream object size | ||
3757 | # | ||
3758 | # [http::]<bs Number of HTTP-equivalent message body bytes | ||
3759 | # received from the next hop, excluding chunked | ||
3760 | # transfer encoding and control messages. | ||
3761 | # Generated FTP/Gopher listings are treated as | ||
3762 | # received bodies. | ||
3763 | # | ||
3764 | # | ||
3765 | # TIMING | ||
3766 | # | ||
3767 | # [http::]<pt Peer response time in milliseconds. The timer starts | ||
3768 | # when the last request byte is sent to the next hop | ||
3769 | # and stops when the last response byte is received. | ||
3770 | # [http::]<tt Total time in milliseconds. The timer | ||
3771 | # starts with the first connect request (or write I/O) | ||
3772 | # sent to the first selected peer. The timer stops | ||
3773 | # with the last I/O with the last peer. | ||
3774 | # | ||
3775 | # Squid handling related format codes: | ||
3776 | # | ||
3777 | # Ss Squid request status (TCP_MISS etc) | ||
3778 | # Sh Squid hierarchy status (DEFAULT_PARENT etc) | ||
3779 | # | ||
3780 | # SSL-related format codes: | ||
3781 | # | ||
3782 | # ssl::bump_mode SslBump decision for the transaction: | ||
3783 | # | ||
3784 | # For CONNECT requests that initiated bumping of | ||
3785 | # a connection and for any request received on | ||
3786 | # an already bumped connection, Squid logs the | ||
3787 | # corresponding SslBump mode ("server-first" or | ||
3788 | # "client-first"). See the ssl_bump option for | ||
3789 | # more information about these modes. | ||
3790 | # | ||
3791 | # A "none" token is logged for requests that | ||
3792 | # triggered "ssl_bump" ACL evaluation matching | ||
3793 | # either a "none" rule or no rules at all. | ||
3794 | # | ||
3795 | # In all other cases, a single dash ("-") is | ||
3796 | # logged. | ||
3797 | # | ||
3798 | # ssl::>sni SSL client SNI sent to Squid. Available only | ||
3799 | # after the peek, stare, or splice SSL bumping | ||
3800 | # actions. | ||
3801 | # | ||
3802 | # If ICAP is enabled, the following code becomes available (as | ||
3803 | # well as ICAP log codes documented with the icap_log option): | ||
3804 | # | ||
3805 | # icap::tt Total ICAP processing time for the HTTP | ||
3806 | # transaction. The timer ticks when ICAP | ||
3807 | # ACLs are checked and when ICAP | ||
3808 | # transaction is in progress. | ||
3809 | # | ||
3810 | # If adaptation is enabled the following three codes become available: | ||
3811 | # | ||
3812 | # adapt::<last_h The header of the last ICAP response or | ||
3813 | # meta-information from the last eCAP | ||
3814 | # transaction related to the HTTP transaction. | ||
3815 | # Like <h, accepts an optional header name | ||
3816 | # argument. | ||
3817 | # | ||
3818 | # adapt::sum_trs Summed adaptation transaction response | ||
3819 | # times recorded as a comma-separated list in | ||
3820 | # the order of transaction start time. Each time | ||
3821 | # value is recorded as an integer number, | ||
3822 | # representing response time of one or more | ||
3823 | # adaptation (ICAP or eCAP) transaction in | ||
3824 | # milliseconds. When a failed transaction is | ||
3825 | # being retried or repeated, its time is not | ||
3826 | # logged individually but added to the | ||
3827 | # replacement (next) transaction. See also: | ||
3828 | # adapt::all_trs. | ||
3829 | # | ||
3830 | # adapt::all_trs All adaptation transaction response times. | ||
3831 | # Same as adaptation_strs but response times of | ||
3832 | # individual transactions are never added | ||
3833 | # together. Instead, all transaction response | ||
3834 | # times are recorded individually. | ||
3835 | # | ||
3836 | # You can prefix adapt::*_trs format codes with adaptation | ||
3837 | # service name in curly braces to record response time(s) specific | ||
3838 | # to that service. For example: %{my_service}adapt::sum_trs | ||
3839 | # | ||
3840 | # If SSL is enabled, the following formating codes become available: | ||
3841 | # | ||
3842 | # %ssl::>cert_subject The Subject field of the received client | ||
3843 | # SSL certificate or a dash ('-') if Squid has | ||
3844 | # received an invalid/malformed certificate or | ||
3845 | # no certificate at all. Consider encoding the | ||
3846 | # logged value because Subject often has spaces. | ||
3847 | # | ||
3848 | # %ssl::>cert_issuer The Issuer field of the received client | ||
3849 | # SSL certificate or a dash ('-') if Squid has | ||
3850 | # received an invalid/malformed certificate or | ||
3851 | # no certificate at all. Consider encoding the | ||
3852 | # logged value because Issuer often has spaces. | ||
3853 | # | ||
3854 | # The default formats available (which do not need re-defining) are: | ||
3855 | # | ||
3856 | #logformat squid %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %[un %Sh/%<a %mt | ||
3857 | #logformat common %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st %Ss:%Sh | ||
3858 | #logformat combined %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh | ||
3859 | #logformat referrer %ts.%03tu %>a %{Referer}>h %ru | ||
3860 | #logformat useragent %>a [%tl] "%{User-Agent}>h" | ||
3861 | # | ||
3862 | # NOTE: When the log_mime_hdrs directive is set to ON. | ||
3863 | # The squid, common and combined formats have a safely encoded copy | ||
3864 | # of the mime headers appended to each line within a pair of brackets. | ||
3865 | # | ||
3866 | # NOTE: The common and combined formats are not quite true to the Apache definition. | ||
3867 | # The logs from Squid contain an extra status and hierarchy code appended. | ||
3868 | # | ||
3869 | #Default: | ||
3870 | # The format definitions squid, common, combined, referrer, useragent are built in. | ||
3871 | |||
3872 | # TAG: access_log | ||
3873 | # Configures whether and how Squid logs HTTP and ICP transactions. | ||
3874 | # If access logging is enabled, a single line is logged for every | ||
3875 | # matching HTTP or ICP request. The recommended directive formats are: | ||
3876 | # | ||
3877 | # access_log <module>:<place> [option ...] [acl acl ...] | ||
3878 | # access_log none [acl acl ...] | ||
3879 | # | ||
3880 | # The following directive format is accepted but may be deprecated: | ||
3881 | # access_log <module>:<place> [<logformat name> [acl acl ...]] | ||
3882 | # | ||
3883 | # In most cases, the first ACL name must not contain the '=' character | ||
3884 | # and should not be equal to an existing logformat name. You can always | ||
3885 | # start with an 'all' ACL to work around those restrictions. | ||
3886 | # | ||
3887 | # Will log to the specified module:place using the specified format (which | ||
3888 | # must be defined in a logformat directive) those entries which match | ||
3889 | # ALL the acl's specified (which must be defined in acl clauses). | ||
3890 | # If no acl is specified, all requests will be logged to this destination. | ||
3891 | # | ||
3892 | # ===== Available options for the recommended directive format ===== | ||
3893 | # | ||
3894 | # logformat=name Names log line format (either built-in or | ||
3895 | # defined by a logformat directive). Defaults | ||
3896 | # to 'squid'. | ||
3897 | # | ||
3898 | # buffer-size=64KB Defines approximate buffering limit for log | ||
3899 | # records (see buffered_logs). Squid should not | ||
3900 | # keep more than the specified size and, hence, | ||
3901 | # should flush records before the buffer becomes | ||
3902 | # full to avoid overflows under normal | ||
3903 | # conditions (the exact flushing algorithm is | ||
3904 | # module-dependent though). The on-error option | ||
3905 | # controls overflow handling. | ||
3906 | # | ||
3907 | # on-error=die|drop Defines action on unrecoverable errors. The | ||
3908 | # 'drop' action ignores (i.e., does not log) | ||
3909 | # affected log records. The default 'die' action | ||
3910 | # kills the affected worker. The drop action | ||
3911 | # support has not been tested for modules other | ||
3912 | # than tcp. | ||
3913 | # | ||
3914 | # ===== Modules Currently available ===== | ||
3915 | # | ||
3916 | # none Do not log any requests matching these ACL. | ||
3917 | # Do not specify Place or logformat name. | ||
3918 | # | ||
3919 | # stdio Write each log line to disk immediately at the completion of | ||
3920 | # each request. | ||
3921 | # Place: the filename and path to be written. | ||
3922 | # | ||
3923 | # daemon Very similar to stdio. But instead of writing to disk the log | ||
3924 | # line is passed to a daemon helper for asychronous handling instead. | ||
3925 | # Place: varies depending on the daemon. | ||
3926 | # | ||
3927 | # log_file_daemon Place: the file name and path to be written. | ||
3928 | # | ||
3929 | # syslog To log each request via syslog facility. | ||
3930 | # Place: The syslog facility and priority level for these entries. | ||
3931 | # Place Format: facility.priority | ||
3932 | # | ||
3933 | # where facility could be any of: | ||
3934 | # authpriv, daemon, local0 ... local7 or user. | ||
3935 | # | ||
3936 | # And priority could be any of: | ||
3937 | # err, warning, notice, info, debug. | ||
3938 | # | ||
3939 | # udp To send each log line as text data to a UDP receiver. | ||
3940 | # Place: The destination host name or IP and port. | ||
3941 | # Place Format: //host:port | ||
3942 | # | ||
3943 | # tcp To send each log line as text data to a TCP receiver. | ||
3944 | # Lines may be accumulated before sending (see buffered_logs). | ||
3945 | # Place: The destination host name or IP and port. | ||
3946 | # Place Format: //host:port | ||
3947 | # | ||
3948 | # Default: | ||
3949 | # access_log daemon:/var/log/squid/access.log squid | ||
3950 | #Default: | ||
3951 | # access_log daemon:/var/log/squid/access.log squid | ||
3952 | |||
3953 | # TAG: icap_log | ||
3954 | # ICAP log files record ICAP transaction summaries, one line per | ||
3955 | # transaction. | ||
3956 | # | ||
3957 | # The icap_log option format is: | ||
3958 | # icap_log <filepath> [<logformat name> [acl acl ...]] | ||
3959 | # icap_log none [acl acl ...]] | ||
3960 | # | ||
3961 | # Please see access_log option documentation for details. The two | ||
3962 | # kinds of logs share the overall configuration approach and many | ||
3963 | # features. | ||
3964 | # | ||
3965 | # ICAP processing of a single HTTP message or transaction may | ||
3966 | # require multiple ICAP transactions. In such cases, multiple | ||
3967 | # ICAP transaction log lines will correspond to a single access | ||
3968 | # log line. | ||
3969 | # | ||
3970 | # ICAP log supports many access.log logformat %codes. In ICAP context, | ||
3971 | # HTTP message-related %codes are applied to the HTTP message embedded | ||
3972 | # in an ICAP message. Logformat "%http::>..." codes are used for HTTP | ||
3973 | # messages embedded in ICAP requests while "%http::<..." codes are used | ||
3974 | # for HTTP messages embedded in ICAP responses. For example: | ||
3975 | # | ||
3976 | # http::>h To-be-adapted HTTP message headers sent by Squid to | ||
3977 | # the ICAP service. For REQMOD transactions, these are | ||
3978 | # HTTP request headers. For RESPMOD, these are HTTP | ||
3979 | # response headers, but Squid currently cannot log them | ||
3980 | # (i.e., %http::>h will expand to "-" for RESPMOD). | ||
3981 | # | ||
3982 | # http::<h Adapted HTTP message headers sent by the ICAP | ||
3983 | # service to Squid (i.e., HTTP request headers in regular | ||
3984 | # REQMOD; HTTP response headers in RESPMOD and during | ||
3985 | # request satisfaction in REQMOD). | ||
3986 | # | ||
3987 | # ICAP OPTIONS transactions do not embed HTTP messages. | ||
3988 | # | ||
3989 | # Several logformat codes below deal with ICAP message bodies. An ICAP | ||
3990 | # message body, if any, typically includes a complete HTTP message | ||
3991 | # (required HTTP headers plus optional HTTP message body). When | ||
3992 | # computing HTTP message body size for these logformat codes, Squid | ||
3993 | # either includes or excludes chunked encoding overheads; see | ||
3994 | # code-specific documentation for details. | ||
3995 | # | ||
3996 | # For Secure ICAP services, all size-related information is currently | ||
3997 | # computed before/after TLS encryption/decryption, as if TLS was not | ||
3998 | # in use at all. | ||
3999 | # | ||
4000 | # The following format codes are also available for ICAP logs: | ||
4001 | # | ||
4002 | # icap::<A ICAP server IP address. Similar to <A. | ||
4003 | # | ||
4004 | # icap::<service_name ICAP service name from the icap_service | ||
4005 | # option in Squid configuration file. | ||
4006 | # | ||
4007 | # icap::ru ICAP Request-URI. Similar to ru. | ||
4008 | # | ||
4009 | # icap::rm ICAP request method (REQMOD, RESPMOD, or | ||
4010 | # OPTIONS). Similar to existing rm. | ||
4011 | # | ||
4012 | # icap::>st The total size of the ICAP request sent to the ICAP | ||
4013 | # server (ICAP headers + ICAP body), including chunking | ||
4014 | # metadata (if any). | ||
4015 | # | ||
4016 | # icap::<st The total size of the ICAP response received from the | ||
4017 | # ICAP server (ICAP headers + ICAP body), including | ||
4018 | # chunking metadata (if any). | ||
4019 | # | ||
4020 | # icap::<bs The size of the ICAP response body received from the | ||
4021 | # ICAP server, excluding chunking metadata (if any). | ||
4022 | # | ||
4023 | # icap::tr Transaction response time (in | ||
4024 | # milliseconds). The timer starts when | ||
4025 | # the ICAP transaction is created and | ||
4026 | # stops when the transaction is completed. | ||
4027 | # Similar to tr. | ||
4028 | # | ||
4029 | # icap::tio Transaction I/O time (in milliseconds). The | ||
4030 | # timer starts when the first ICAP request | ||
4031 | # byte is scheduled for sending. The timers | ||
4032 | # stops when the last byte of the ICAP response | ||
4033 | # is received. | ||
4034 | # | ||
4035 | # icap::to Transaction outcome: ICAP_ERR* for all | ||
4036 | # transaction errors, ICAP_OPT for OPTION | ||
4037 | # transactions, ICAP_ECHO for 204 | ||
4038 | # responses, ICAP_MOD for message | ||
4039 | # modification, and ICAP_SAT for request | ||
4040 | # satisfaction. Similar to Ss. | ||
4041 | # | ||
4042 | # icap::Hs ICAP response status code. Similar to Hs. | ||
4043 | # | ||
4044 | # icap::>h ICAP request header(s). Similar to >h. | ||
4045 | # | ||
4046 | # icap::<h ICAP response header(s). Similar to <h. | ||
4047 | # | ||
4048 | # The default ICAP log format, which can be used without an explicit | ||
4049 | # definition, is called icap_squid: | ||
4050 | # | ||
4051 | #logformat icap_squid %ts.%03tu %6icap::tr %>A %icap::to/%03icap::Hs %icap::<st %icap::rm %icap::ru %un -/%icap::<A - | ||
4052 | # | ||
4053 | # See also: logformat and %adapt::<last_h | ||
4054 | #Default: | ||
4055 | # none | ||
4056 | |||
4057 | # TAG: logfile_daemon | ||
4058 | # Specify the path to the logfile-writing daemon. This daemon is | ||
4059 | # used to write the access and store logs, if configured. | ||
4060 | # | ||
4061 | # Squid sends a number of commands to the log daemon: | ||
4062 | # L<data>\n - logfile data | ||
4063 | # R\n - rotate file | ||
4064 | # T\n - truncate file | ||
4065 | # O\n - reopen file | ||
4066 | # F\n - flush file | ||
4067 | # r<n>\n - set rotate count to <n> | ||
4068 | # b<n>\n - 1 = buffer output, 0 = don't buffer output | ||
4069 | # | ||
4070 | # No responses is expected. | ||
4071 | #Default: | ||
4072 | # logfile_daemon /usr/lib/squid/log_file_daemon | ||
4073 | |||
4074 | # TAG: stats_collection allow|deny acl acl... | ||
4075 | # This options allows you to control which requests gets accounted | ||
4076 | # in performance counters. | ||
4077 | # | ||
4078 | # This clause only supports fast acl types. | ||
4079 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4080 | #Default: | ||
4081 | # Allow logging for all transactions. | ||
4082 | |||
4083 | # TAG: cache_store_log | ||
4084 | # Logs the activities of the storage manager. Shows which | ||
4085 | # objects are ejected from the cache, and which objects are | ||
4086 | # saved and for how long. | ||
4087 | # There are not really utilities to analyze this data, so you can safely | ||
4088 | # disable it (the default). | ||
4089 | # | ||
4090 | # Store log uses modular logging outputs. See access_log for the list | ||
4091 | # of modules supported. | ||
4092 | # | ||
4093 | # Example: | ||
4094 | # cache_store_log stdio:/var/log/squid/store.log | ||
4095 | # cache_store_log daemon:/var/log/squid/store.log | ||
4096 | #Default: | ||
4097 | # none | ||
4098 | |||
4099 | # TAG: cache_swap_state | ||
4100 | # Location for the cache "swap.state" file. This index file holds | ||
4101 | # the metadata of objects saved on disk. It is used to rebuild | ||
4102 | # the cache during startup. Normally this file resides in each | ||
4103 | # 'cache_dir' directory, but you may specify an alternate | ||
4104 | # pathname here. Note you must give a full filename, not just | ||
4105 | # a directory. Since this is the index for the whole object | ||
4106 | # list you CANNOT periodically rotate it! | ||
4107 | # | ||
4108 | # If %s can be used in the file name it will be replaced with a | ||
4109 | # a representation of the cache_dir name where each / is replaced | ||
4110 | # with '.'. This is needed to allow adding/removing cache_dir | ||
4111 | # lines when cache_swap_log is being used. | ||
4112 | # | ||
4113 | # If have more than one 'cache_dir', and %s is not used in the name | ||
4114 | # these swap logs will have names such as: | ||
4115 | # | ||
4116 | # cache_swap_log.00 | ||
4117 | # cache_swap_log.01 | ||
4118 | # cache_swap_log.02 | ||
4119 | # | ||
4120 | # The numbered extension (which is added automatically) | ||
4121 | # corresponds to the order of the 'cache_dir' lines in this | ||
4122 | # configuration file. If you change the order of the 'cache_dir' | ||
4123 | # lines in this file, these index files will NOT correspond to | ||
4124 | # the correct 'cache_dir' entry (unless you manually rename | ||
4125 | # them). We recommend you do NOT use this option. It is | ||
4126 | # better to keep these index files in each 'cache_dir' directory. | ||
4127 | #Default: | ||
4128 | # Store the journal inside its cache_dir | ||
4129 | |||
4130 | # TAG: logfile_rotate | ||
4131 | # Specifies the number of logfile rotations to make when you | ||
4132 | # type 'squid -k rotate'. The default is 10, which will rotate | ||
4133 | # with extensions 0 through 9. Setting logfile_rotate to 0 will | ||
4134 | # disable the file name rotation, but the logfiles are still closed | ||
4135 | # and re-opened. This will enable you to rename the logfiles | ||
4136 | # yourself just before sending the rotate signal. | ||
4137 | # | ||
4138 | # Note, the 'squid -k rotate' command normally sends a USR1 | ||
4139 | # signal to the running squid process. In certain situations | ||
4140 | # (e.g. on Linux with Async I/O), USR1 is used for other | ||
4141 | # purposes, so -k rotate uses another signal. It is best to get | ||
4142 | # in the habit of using 'squid -k rotate' instead of 'kill -USR1 | ||
4143 | # <pid>'. | ||
4144 | # | ||
4145 | # Note, from Squid-3.1 this option is only a default for cache.log, | ||
4146 | # that log can be rotated separately by using debug_options. | ||
4147 | # | ||
4148 | # Note2, for Debian/Linux the default of logfile_rotate is | ||
4149 | # zero, since it includes external logfile-rotation methods. | ||
4150 | #Default: | ||
4151 | # logfile_rotate 0 | ||
4152 | |||
4153 | # TAG: mime_table | ||
4154 | # Path to Squid's icon configuration file. | ||
4155 | # | ||
4156 | # You shouldn't need to change this, but the default file contains | ||
4157 | # examples and formatting information if you do. | ||
4158 | #Default: | ||
4159 | # mime_table /usr/share/squid/mime.conf | ||
4160 | |||
4161 | # TAG: log_mime_hdrs on|off | ||
4162 | # The Cache can record both the request and the response MIME | ||
4163 | # headers for each HTTP transaction. The headers are encoded | ||
4164 | # safely and will appear as two bracketed fields at the end of | ||
4165 | # the access log (for either the native or httpd-emulated log | ||
4166 | # formats). To enable this logging set log_mime_hdrs to 'on'. | ||
4167 | #Default: | ||
4168 | # log_mime_hdrs off | ||
4169 | |||
4170 | # TAG: pid_filename | ||
4171 | # A filename to write the process-id to. To disable, enter "none". | ||
4172 | #Default: | ||
4173 | # pid_filename /var/run/squid.pid | ||
4174 | |||
4175 | # TAG: client_netmask | ||
4176 | # A netmask for client addresses in logfiles and cachemgr output. | ||
4177 | # Change this to protect the privacy of your cache clients. | ||
4178 | # A netmask of 255.255.255.0 will log all IP's in that range with | ||
4179 | # the last digit set to '0'. | ||
4180 | #Default: | ||
4181 | # Log full client IP address | ||
4182 | |||
4183 | # TAG: strip_query_terms | ||
4184 | # By default, Squid strips query terms from requested URLs before | ||
4185 | # logging. This protects your user's privacy and reduces log size. | ||
4186 | # | ||
4187 | # When investigating HIT/MISS or other caching behaviour you | ||
4188 | # will need to disable this to see the full URL used by Squid. | ||
4189 | #Default: | ||
4190 | # strip_query_terms on | ||
4191 | |||
4192 | # TAG: buffered_logs on|off | ||
4193 | # Whether to write/send access_log records ASAP or accumulate them and | ||
4194 | # then write/send them in larger chunks. Buffering may improve | ||
4195 | # performance because it decreases the number of I/Os. However, | ||
4196 | # buffering increases the delay before log records become available to | ||
4197 | # the final recipient (e.g., a disk file or logging daemon) and, | ||
4198 | # hence, increases the risk of log records loss. | ||
4199 | # | ||
4200 | # Note that even when buffered_logs are off, Squid may have to buffer | ||
4201 | # records if it cannot write/send them immediately due to pending I/Os | ||
4202 | # (e.g., the I/O writing the previous log record) or connectivity loss. | ||
4203 | # | ||
4204 | # Currently honored by 'daemon' and 'tcp' access_log modules only. | ||
4205 | #Default: | ||
4206 | # buffered_logs off | ||
4207 | |||
4208 | # TAG: netdb_filename | ||
4209 | # Where Squid stores it's netdb journal. | ||
4210 | # When enabled this journal preserves netdb state between restarts. | ||
4211 | # | ||
4212 | # To disable, enter "none". | ||
4213 | #Default: | ||
4214 | # netdb_filename stdio:/var/log/squid/netdb.state | ||
4215 | |||
4216 | # OPTIONS FOR TROUBLESHOOTING | ||
4217 | # ----------------------------------------------------------------------------- | ||
4218 | |||
4219 | # TAG: cache_log | ||
4220 | # Squid administrative logging file. | ||
4221 | # | ||
4222 | # This is where general information about Squid behavior goes. You can | ||
4223 | # increase the amount of data logged to this file and how often it is | ||
4224 | # rotated with "debug_options" | ||
4225 | #Default: | ||
4226 | # cache_log /var/log/squid/cache.log | ||
4227 | |||
4228 | # TAG: debug_options | ||
4229 | # Logging options are set as section,level where each source file | ||
4230 | # is assigned a unique section. Lower levels result in less | ||
4231 | # output, Full debugging (level 9) can result in a very large | ||
4232 | # log file, so be careful. | ||
4233 | # | ||
4234 | # The magic word "ALL" sets debugging levels for all sections. | ||
4235 | # The default is to run with "ALL,1" to record important warnings. | ||
4236 | # | ||
4237 | # The rotate=N option can be used to keep more or less of these logs | ||
4238 | # than would otherwise be kept by logfile_rotate. | ||
4239 | # For most uses a single log should be enough to monitor current | ||
4240 | # events affecting Squid. | ||
4241 | #Default: | ||
4242 | # Log all critical and important messages. | ||
4243 | |||
4244 | # TAG: coredump_dir | ||
4245 | # By default Squid leaves core files in the directory from where | ||
4246 | # it was started. If you set 'coredump_dir' to a directory | ||
4247 | # that exists, Squid will chdir() to that directory at startup | ||
4248 | # and coredump files will be left there. | ||
4249 | # | ||
4250 | #Default: | ||
4251 | # Use the directory from where Squid was started. | ||
4252 | # | ||
4253 | |||
4254 | # Leave coredumps in the first cache dir | ||
4255 | coredump_dir /var/spool/squid | ||
4256 | |||
4257 | # OPTIONS FOR FTP GATEWAYING | ||
4258 | # ----------------------------------------------------------------------------- | ||
4259 | |||
4260 | # TAG: ftp_user | ||
4261 | # If you want the anonymous login password to be more informative | ||
4262 | # (and enable the use of picky FTP servers), set this to something | ||
4263 | # reasonable for your domain, like wwwuser@somewhere.net | ||
4264 | # | ||
4265 | # The reason why this is domainless by default is the | ||
4266 | # request can be made on the behalf of a user in any domain, | ||
4267 | # depending on how the cache is used. | ||
4268 | # Some FTP server also validate the email address is valid | ||
4269 | # (for example perl.com). | ||
4270 | #Default: | ||
4271 | # ftp_user Squid@ | ||
4272 | |||
4273 | # TAG: ftp_passive | ||
4274 | # If your firewall does not allow Squid to use passive | ||
4275 | # connections, turn off this option. | ||
4276 | # | ||
4277 | # Use of ftp_epsv_all option requires this to be ON. | ||
4278 | #Default: | ||
4279 | # ftp_passive on | ||
4280 | |||
4281 | # TAG: ftp_epsv_all | ||
4282 | # FTP Protocol extensions permit the use of a special "EPSV ALL" command. | ||
4283 | # | ||
4284 | # NATs may be able to put the connection on a "fast path" through the | ||
4285 | # translator, as the EPRT command will never be used and therefore, | ||
4286 | # translation of the data portion of the segments will never be needed. | ||
4287 | # | ||
4288 | # When a client only expects to do two-way FTP transfers this may be | ||
4289 | # useful. | ||
4290 | # If squid finds that it must do a three-way FTP transfer after issuing | ||
4291 | # an EPSV ALL command, the FTP session will fail. | ||
4292 | # | ||
4293 | # If you have any doubts about this option do not use it. | ||
4294 | # Squid will nicely attempt all other connection methods. | ||
4295 | # | ||
4296 | # Requires ftp_passive to be ON (default) for any effect. | ||
4297 | #Default: | ||
4298 | # ftp_epsv_all off | ||
4299 | |||
4300 | # TAG: ftp_epsv | ||
4301 | # FTP Protocol extensions permit the use of a special "EPSV" command. | ||
4302 | # | ||
4303 | # NATs may be able to put the connection on a "fast path" through the | ||
4304 | # translator using EPSV, as the EPRT command will never be used | ||
4305 | # and therefore, translation of the data portion of the segments | ||
4306 | # will never be needed. | ||
4307 | # | ||
4308 | # EPSV is often required to interoperate with FTP servers on IPv6 | ||
4309 | # networks. On the other hand, it may break some IPv4 servers. | ||
4310 | # | ||
4311 | # By default, EPSV may try EPSV with any FTP server. To fine tune | ||
4312 | # that decision, you may restrict EPSV to certain clients or servers | ||
4313 | # using ACLs: | ||
4314 | # | ||
4315 | # ftp_epsv allow|deny al1 acl2 ... | ||
4316 | # | ||
4317 | # WARNING: Disabling EPSV may cause problems with external NAT and IPv6. | ||
4318 | # | ||
4319 | # Only fast ACLs are supported. | ||
4320 | # Requires ftp_passive to be ON (default) for any effect. | ||
4321 | #Default: | ||
4322 | # none | ||
4323 | |||
4324 | # TAG: ftp_eprt | ||
4325 | # FTP Protocol extensions permit the use of a special "EPRT" command. | ||
4326 | # | ||
4327 | # This extension provides a protocol neutral alternative to the | ||
4328 | # IPv4-only PORT command. When supported it enables active FTP data | ||
4329 | # channels over IPv6 and efficient NAT handling. | ||
4330 | # | ||
4331 | # Turning this OFF will prevent EPRT being attempted and will skip | ||
4332 | # straight to using PORT for IPv4 servers. | ||
4333 | # | ||
4334 | # Some devices are known to not handle this extension correctly and | ||
4335 | # may result in crashes. Devices which suport EPRT enough to fail | ||
4336 | # cleanly will result in Squid attempting PORT anyway. This directive | ||
4337 | # should only be disabled when EPRT results in device failures. | ||
4338 | # | ||
4339 | # WARNING: Doing so will convert Squid back to the old behavior with all | ||
4340 | # the related problems with external NAT devices/layers and IPv4-only FTP. | ||
4341 | #Default: | ||
4342 | # ftp_eprt on | ||
4343 | |||
4344 | # TAG: ftp_sanitycheck | ||
4345 | # For security and data integrity reasons Squid by default performs | ||
4346 | # sanity checks of the addresses of FTP data connections ensure the | ||
4347 | # data connection is to the requested server. If you need to allow | ||
4348 | # FTP connections to servers using another IP address for the data | ||
4349 | # connection turn this off. | ||
4350 | #Default: | ||
4351 | # ftp_sanitycheck on | ||
4352 | |||
4353 | # TAG: ftp_telnet_protocol | ||
4354 | # The FTP protocol is officially defined to use the telnet protocol | ||
4355 | # as transport channel for the control connection. However, many | ||
4356 | # implementations are broken and does not respect this aspect of | ||
4357 | # the FTP protocol. | ||
4358 | # | ||
4359 | # If you have trouble accessing files with ASCII code 255 in the | ||
4360 | # path or similar problems involving this ASCII code you can | ||
4361 | # try setting this directive to off. If that helps, report to the | ||
4362 | # operator of the FTP server in question that their FTP server | ||
4363 | # is broken and does not follow the FTP standard. | ||
4364 | #Default: | ||
4365 | # ftp_telnet_protocol on | ||
4366 | |||
4367 | # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS | ||
4368 | # ----------------------------------------------------------------------------- | ||
4369 | |||
4370 | # TAG: diskd_program | ||
4371 | # Specify the location of the diskd executable. | ||
4372 | # Note this is only useful if you have compiled in | ||
4373 | # diskd as one of the store io modules. | ||
4374 | #Default: | ||
4375 | # diskd_program /usr/lib/squid/diskd | ||
4376 | |||
4377 | # TAG: unlinkd_program | ||
4378 | # Specify the location of the executable for file deletion process. | ||
4379 | #Default: | ||
4380 | # unlinkd_program /usr/lib/squid/unlinkd | ||
4381 | |||
4382 | # TAG: pinger_program | ||
4383 | # Specify the location of the executable for the pinger process. | ||
4384 | #Default: | ||
4385 | # pinger_program /usr/lib/squid/pinger | ||
4386 | |||
4387 | # TAG: pinger_enable | ||
4388 | # Control whether the pinger is active at run-time. | ||
4389 | # Enables turning ICMP pinger on and off with a simple | ||
4390 | # squid -k reconfigure. | ||
4391 | #Default: | ||
4392 | # pinger_enable on | ||
4393 | |||
4394 | # OPTIONS FOR URL REWRITING | ||
4395 | # ----------------------------------------------------------------------------- | ||
4396 | |||
4397 | # TAG: url_rewrite_program | ||
4398 | # Specify the location of the executable URL rewriter to use. | ||
4399 | # Since they can perform almost any function there isn't one included. | ||
4400 | # | ||
4401 | # For each requested URL, the rewriter will receive on line with the format | ||
4402 | # | ||
4403 | # [channel-ID <SP>] URL [<SP> extras]<NL> | ||
4404 | # | ||
4405 | # See url_rewrite_extras on how to send "extras" with optional values to | ||
4406 | # the helper. | ||
4407 | # After processing the request the helper must reply using the following format: | ||
4408 | # | ||
4409 | # [channel-ID <SP>] result [<SP> kv-pairs] | ||
4410 | # | ||
4411 | # The result code can be: | ||
4412 | # | ||
4413 | # OK status=30N url="..." | ||
4414 | # Redirect the URL to the one supplied in 'url='. | ||
4415 | # 'status=' is optional and contains the status code to send | ||
4416 | # the client in Squids HTTP response. It must be one of the | ||
4417 | # HTTP redirect status codes: 301, 302, 303, 307, 308. | ||
4418 | # When no status is given Squid will use 302. | ||
4419 | # | ||
4420 | # OK rewrite-url="..." | ||
4421 | # Rewrite the URL to the one supplied in 'rewrite-url='. | ||
4422 | # The new URL is fetched directly by Squid and returned to | ||
4423 | # the client as the response to its request. | ||
4424 | # | ||
4425 | # OK | ||
4426 | # When neither of url= and rewrite-url= are sent Squid does | ||
4427 | # not change the URL. | ||
4428 | # | ||
4429 | # ERR | ||
4430 | # Do not change the URL. | ||
4431 | # | ||
4432 | # BH | ||
4433 | # An internal error occurred in the helper, preventing | ||
4434 | # a result being identified. The 'message=' key name is | ||
4435 | # reserved for delivering a log message. | ||
4436 | # | ||
4437 | # | ||
4438 | # In addition to the above kv-pairs Squid also understands the following | ||
4439 | # optional kv-pairs received from URL rewriters: | ||
4440 | # clt_conn_tag=TAG | ||
4441 | # Associates a TAG with the client TCP connection. | ||
4442 | # The TAG is treated as a regular annotation but persists across | ||
4443 | # future requests on the client connection rather than just the | ||
4444 | # current request. A helper may update the TAG during subsequent | ||
4445 | # requests be returning a new kv-pair. | ||
4446 | # | ||
4447 | # When using the concurrency= option the protocol is changed by | ||
4448 | # introducing a query channel tag in front of the request/response. | ||
4449 | # The query channel tag is a number between 0 and concurrency-1. | ||
4450 | # This value must be echoed back unchanged to Squid as the first part | ||
4451 | # of the response relating to its request. | ||
4452 | # | ||
4453 | # WARNING: URL re-writing ability should be avoided whenever possible. | ||
4454 | # Use the URL redirect form of response instead. | ||
4455 | # | ||
4456 | # Re-write creates a difference in the state held by the client | ||
4457 | # and server. Possibly causing confusion when the server response | ||
4458 | # contains snippets of its view state. Embeded URLs, response | ||
4459 | # and content Location headers, etc. are not re-written by this | ||
4460 | # interface. | ||
4461 | # | ||
4462 | # By default, a URL rewriter is not used. | ||
4463 | #Default: | ||
4464 | # none | ||
4465 | |||
4466 | # TAG: url_rewrite_children | ||
4467 | # The maximum number of redirector processes to spawn. If you limit | ||
4468 | # it too few Squid will have to wait for them to process a backlog of | ||
4469 | # URLs, slowing it down. If you allow too many they will use RAM | ||
4470 | # and other system resources noticably. | ||
4471 | # | ||
4472 | # The startup= and idle= options allow some measure of skew in your | ||
4473 | # tuning. | ||
4474 | # | ||
4475 | # startup= | ||
4476 | # | ||
4477 | # Sets a minimum of how many processes are to be spawned when Squid | ||
4478 | # starts or reconfigures. When set to zero the first request will | ||
4479 | # cause spawning of the first child process to handle it. | ||
4480 | # | ||
4481 | # Starting too few will cause an initial slowdown in traffic as Squid | ||
4482 | # attempts to simultaneously spawn enough processes to cope. | ||
4483 | # | ||
4484 | # idle= | ||
4485 | # | ||
4486 | # Sets a minimum of how many processes Squid is to try and keep available | ||
4487 | # at all times. When traffic begins to rise above what the existing | ||
4488 | # processes can handle this many more will be spawned up to the maximum | ||
4489 | # configured. A minimum setting of 1 is required. | ||
4490 | # | ||
4491 | # concurrency= | ||
4492 | # | ||
4493 | # The number of requests each redirector helper can handle in | ||
4494 | # parallel. Defaults to 0 which indicates the redirector | ||
4495 | # is a old-style single threaded redirector. | ||
4496 | # | ||
4497 | # When this directive is set to a value >= 1 then the protocol | ||
4498 | # used to communicate with the helper is modified to include | ||
4499 | # an ID in front of the request/response. The ID from the request | ||
4500 | # must be echoed back with the response to that request. | ||
4501 | #Default: | ||
4502 | # url_rewrite_children 20 startup=0 idle=1 concurrency=0 | ||
4503 | |||
4504 | # TAG: url_rewrite_host_header | ||
4505 | # To preserve same-origin security policies in browsers and | ||
4506 | # prevent Host: header forgery by redirectors Squid rewrites | ||
4507 | # any Host: header in redirected requests. | ||
4508 | # | ||
4509 | # If you are running an accelerator this may not be a wanted | ||
4510 | # effect of a redirector. This directive enables you disable | ||
4511 | # Host: alteration in reverse-proxy traffic. | ||
4512 | # | ||
4513 | # WARNING: Entries are cached on the result of the URL rewriting | ||
4514 | # process, so be careful if you have domain-virtual hosts. | ||
4515 | # | ||
4516 | # WARNING: Squid and other software verifies the URL and Host | ||
4517 | # are matching, so be careful not to relay through other proxies | ||
4518 | # or inspecting firewalls with this disabled. | ||
4519 | #Default: | ||
4520 | # url_rewrite_host_header on | ||
4521 | |||
4522 | # TAG: url_rewrite_access | ||
4523 | # If defined, this access list specifies which requests are | ||
4524 | # sent to the redirector processes. | ||
4525 | # | ||
4526 | # This clause supports both fast and slow acl types. | ||
4527 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4528 | #Default: | ||
4529 | # Allow, unless rules exist in squid.conf. | ||
4530 | |||
4531 | # TAG: url_rewrite_bypass | ||
4532 | # When this is 'on', a request will not go through the | ||
4533 | # redirector if all the helpers are busy. If this is 'off' | ||
4534 | # and the redirector queue grows too large, Squid will exit | ||
4535 | # with a FATAL error and ask you to increase the number of | ||
4536 | # redirectors. You should only enable this if the redirectors | ||
4537 | # are not critical to your caching system. If you use | ||
4538 | # redirectors for access control, and you enable this option, | ||
4539 | # users may have access to pages they should not | ||
4540 | # be allowed to request. | ||
4541 | #Default: | ||
4542 | # url_rewrite_bypass off | ||
4543 | |||
4544 | # TAG: url_rewrite_extras | ||
4545 | # Specifies a string to be append to request line format for the | ||
4546 | # rewriter helper. "Quoted" format values may contain spaces and | ||
4547 | # logformat %macros. In theory, any logformat %macro can be used. | ||
4548 | # In practice, a %macro expands as a dash (-) if the helper request is | ||
4549 | # sent before the required macro information is available to Squid. | ||
4550 | #Default: | ||
4551 | # url_rewrite_extras "%>a/%>A %un %>rm myip=%la myport=%lp" | ||
4552 | |||
4553 | # OPTIONS FOR STORE ID | ||
4554 | # ----------------------------------------------------------------------------- | ||
4555 | |||
4556 | # TAG: store_id_program | ||
4557 | # Specify the location of the executable StoreID helper to use. | ||
4558 | # Since they can perform almost any function there isn't one included. | ||
4559 | # | ||
4560 | # For each requested URL, the helper will receive one line with the format | ||
4561 | # | ||
4562 | # [channel-ID <SP>] URL [<SP> extras]<NL> | ||
4563 | # | ||
4564 | # | ||
4565 | # After processing the request the helper must reply using the following format: | ||
4566 | # | ||
4567 | # [channel-ID <SP>] result [<SP> kv-pairs] | ||
4568 | # | ||
4569 | # The result code can be: | ||
4570 | # | ||
4571 | # OK store-id="..." | ||
4572 | # Use the StoreID supplied in 'store-id='. | ||
4573 | # | ||
4574 | # ERR | ||
4575 | # The default is to use HTTP request URL as the store ID. | ||
4576 | # | ||
4577 | # BH | ||
4578 | # An internal error occured in the helper, preventing | ||
4579 | # a result being identified. | ||
4580 | # | ||
4581 | # In addition to the above kv-pairs Squid also understands the following | ||
4582 | # optional kv-pairs received from URL rewriters: | ||
4583 | # clt_conn_tag=TAG | ||
4584 | # Associates a TAG with the client TCP connection. | ||
4585 | # Please see url_rewrite_program related documentation for this | ||
4586 | # kv-pair | ||
4587 | # | ||
4588 | # Helper programs should be prepared to receive and possibly ignore | ||
4589 | # additional whitespace-separated tokens on each input line. | ||
4590 | # | ||
4591 | # When using the concurrency= option the protocol is changed by | ||
4592 | # introducing a query channel tag in front of the request/response. | ||
4593 | # The query channel tag is a number between 0 and concurrency-1. | ||
4594 | # This value must be echoed back unchanged to Squid as the first part | ||
4595 | # of the response relating to its request. | ||
4596 | # | ||
4597 | # NOTE: when using StoreID refresh_pattern will apply to the StoreID | ||
4598 | # returned from the helper and not the URL. | ||
4599 | # | ||
4600 | # WARNING: Wrong StoreID value returned by a careless helper may result | ||
4601 | # in the wrong cached response returned to the user. | ||
4602 | # | ||
4603 | # By default, a StoreID helper is not used. | ||
4604 | #Default: | ||
4605 | # none | ||
4606 | |||
4607 | # TAG: store_id_extras | ||
4608 | # Specifies a string to be append to request line format for the | ||
4609 | # StoreId helper. "Quoted" format values may contain spaces and | ||
4610 | # logformat %macros. In theory, any logformat %macro can be used. | ||
4611 | # In practice, a %macro expands as a dash (-) if the helper request is | ||
4612 | # sent before the required macro information is available to Squid. | ||
4613 | #Default: | ||
4614 | # store_id_extras "%>a/%>A %un %>rm myip=%la myport=%lp" | ||
4615 | |||
4616 | # TAG: store_id_children | ||
4617 | # The maximum number of StoreID helper processes to spawn. If you limit | ||
4618 | # it too few Squid will have to wait for them to process a backlog of | ||
4619 | # requests, slowing it down. If you allow too many they will use RAM | ||
4620 | # and other system resources noticably. | ||
4621 | # | ||
4622 | # The startup= and idle= options allow some measure of skew in your | ||
4623 | # tuning. | ||
4624 | # | ||
4625 | # startup= | ||
4626 | # | ||
4627 | # Sets a minimum of how many processes are to be spawned when Squid | ||
4628 | # starts or reconfigures. When set to zero the first request will | ||
4629 | # cause spawning of the first child process to handle it. | ||
4630 | # | ||
4631 | # Starting too few will cause an initial slowdown in traffic as Squid | ||
4632 | # attempts to simultaneously spawn enough processes to cope. | ||
4633 | # | ||
4634 | # idle= | ||
4635 | # | ||
4636 | # Sets a minimum of how many processes Squid is to try and keep available | ||
4637 | # at all times. When traffic begins to rise above what the existing | ||
4638 | # processes can handle this many more will be spawned up to the maximum | ||
4639 | # configured. A minimum setting of 1 is required. | ||
4640 | # | ||
4641 | # concurrency= | ||
4642 | # | ||
4643 | # The number of requests each storeID helper can handle in | ||
4644 | # parallel. Defaults to 0 which indicates the helper | ||
4645 | # is a old-style single threaded program. | ||
4646 | # | ||
4647 | # When this directive is set to a value >= 1 then the protocol | ||
4648 | # used to communicate with the helper is modified to include | ||
4649 | # an ID in front of the request/response. The ID from the request | ||
4650 | # must be echoed back with the response to that request. | ||
4651 | #Default: | ||
4652 | # store_id_children 20 startup=0 idle=1 concurrency=0 | ||
4653 | |||
4654 | # TAG: store_id_access | ||
4655 | # If defined, this access list specifies which requests are | ||
4656 | # sent to the StoreID processes. By default all requests | ||
4657 | # are sent. | ||
4658 | # | ||
4659 | # This clause supports both fast and slow acl types. | ||
4660 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4661 | #Default: | ||
4662 | # Allow, unless rules exist in squid.conf. | ||
4663 | |||
4664 | # TAG: store_id_bypass | ||
4665 | # When this is 'on', a request will not go through the | ||
4666 | # helper if all helpers are busy. If this is 'off' | ||
4667 | # and the helper queue grows too large, Squid will exit | ||
4668 | # with a FATAL error and ask you to increase the number of | ||
4669 | # helpers. You should only enable this if the helperss | ||
4670 | # are not critical to your caching system. If you use | ||
4671 | # helpers for critical caching components, and you enable this | ||
4672 | # option, users may not get objects from cache. | ||
4673 | #Default: | ||
4674 | # store_id_bypass on | ||
4675 | |||
4676 | # OPTIONS FOR TUNING THE CACHE | ||
4677 | # ----------------------------------------------------------------------------- | ||
4678 | |||
4679 | # TAG: cache | ||
4680 | # Requests denied by this directive will not be served from the cache | ||
4681 | # and their responses will not be stored in the cache. This directive | ||
4682 | # has no effect on other transactions and on already cached responses. | ||
4683 | # | ||
4684 | # This clause supports both fast and slow acl types. | ||
4685 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4686 | # | ||
4687 | # This and the two other similar caching directives listed below are | ||
4688 | # checked at different transaction processing stages, have different | ||
4689 | # access to response information, affect different cache operations, | ||
4690 | # and differ in slow ACLs support: | ||
4691 | # | ||
4692 | # * cache: Checked before Squid makes a hit/miss determination. | ||
4693 | # No access to reply information! | ||
4694 | # Denies both serving a hit and storing a miss. | ||
4695 | # Supports both fast and slow ACLs. | ||
4696 | # * send_hit: Checked after a hit was detected. | ||
4697 | # Has access to reply (hit) information. | ||
4698 | # Denies serving a hit only. | ||
4699 | # Supports fast ACLs only. | ||
4700 | # * store_miss: Checked before storing a cachable miss. | ||
4701 | # Has access to reply (miss) information. | ||
4702 | # Denies storing a miss only. | ||
4703 | # Supports fast ACLs only. | ||
4704 | # | ||
4705 | # If you are not sure which of the three directives to use, apply the | ||
4706 | # following decision logic: | ||
4707 | # | ||
4708 | # * If your ACL(s) are of slow type _and_ need response info, redesign. | ||
4709 | # Squid does not support that particular combination at this time. | ||
4710 | # Otherwise: | ||
4711 | # * If your directive ACL(s) are of slow type, use "cache"; and/or | ||
4712 | # * if your directive ACL(s) need no response info, use "cache". | ||
4713 | # Otherwise: | ||
4714 | # * If you do not want the response cached, use store_miss; and/or | ||
4715 | # * if you do not want a hit on a cached response, use send_hit. | ||
4716 | #Default: | ||
4717 | # By default, this directive is unused and has no effect. | ||
4718 | |||
4719 | # TAG: send_hit | ||
4720 | # Responses denied by this directive will not be served from the cache | ||
4721 | # (but may still be cached, see store_miss). This directive has no | ||
4722 | # effect on the responses it allows and on the cached objects. | ||
4723 | # | ||
4724 | # Please see the "cache" directive for a summary of differences among | ||
4725 | # store_miss, send_hit, and cache directives. | ||
4726 | # | ||
4727 | # Unlike the "cache" directive, send_hit only supports fast acl | ||
4728 | # types. See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4729 | # | ||
4730 | # For example: | ||
4731 | # | ||
4732 | # # apply custom Store ID mapping to some URLs | ||
4733 | # acl MapMe dstdomain .c.example.com | ||
4734 | # store_id_program ... | ||
4735 | # store_id_access allow MapMe | ||
4736 | # | ||
4737 | # # but prevent caching of special responses | ||
4738 | # # such as 302 redirects that cause StoreID loops | ||
4739 | # acl Ordinary http_status 200-299 | ||
4740 | # store_miss deny MapMe !Ordinary | ||
4741 | # | ||
4742 | # # and do not serve any previously stored special responses | ||
4743 | # # from the cache (in case they were already cached before | ||
4744 | # # the above store_miss rule was in effect). | ||
4745 | # send_hit deny MapMe !Ordinary | ||
4746 | #Default: | ||
4747 | # By default, this directive is unused and has no effect. | ||
4748 | |||
4749 | # TAG: store_miss | ||
4750 | # Responses denied by this directive will not be cached (but may still | ||
4751 | # be served from the cache, see send_hit). This directive has no | ||
4752 | # effect on the responses it allows and on the already cached responses. | ||
4753 | # | ||
4754 | # Please see the "cache" directive for a summary of differences among | ||
4755 | # store_miss, send_hit, and cache directives. See the | ||
4756 | # send_hit directive for a usage example. | ||
4757 | # | ||
4758 | # Unlike the "cache" directive, store_miss only supports fast acl | ||
4759 | # types. See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
4760 | #Default: | ||
4761 | # By default, this directive is unused and has no effect. | ||
4762 | |||
4763 | # TAG: max_stale time-units | ||
4764 | # This option puts an upper limit on how stale content Squid | ||
4765 | # will serve from the cache if cache validation fails. | ||
4766 | # Can be overriden by the refresh_pattern max-stale option. | ||
4767 | #Default: | ||
4768 | # max_stale 1 week | ||
4769 | |||
4770 | # TAG: refresh_pattern | ||
4771 | # usage: refresh_pattern [-i] regex min percent max [options] | ||
4772 | # | ||
4773 | # By default, regular expressions are CASE-SENSITIVE. To make | ||
4774 | # them case-insensitive, use the -i option. | ||
4775 | # | ||
4776 | # 'Min' is the time (in minutes) an object without an explicit | ||
4777 | # expiry time should be considered fresh. The recommended | ||
4778 | # value is 0, any higher values may cause dynamic applications | ||
4779 | # to be erroneously cached unless the application designer | ||
4780 | # has taken the appropriate actions. | ||
4781 | # | ||
4782 | # 'Percent' is a percentage of the objects age (time since last | ||
4783 | # modification age) an object without explicit expiry time | ||
4784 | # will be considered fresh. | ||
4785 | # | ||
4786 | # 'Max' is an upper limit on how long objects without an explicit | ||
4787 | # expiry time will be considered fresh. The value is also used | ||
4788 | # to form Cache-Control: max-age header for a request sent from | ||
4789 | # Squid to origin/parent. | ||
4790 | # | ||
4791 | # options: override-expire | ||
4792 | # override-lastmod | ||
4793 | # reload-into-ims | ||
4794 | # ignore-reload | ||
4795 | # ignore-no-store | ||
4796 | # ignore-must-revalidate | ||
4797 | # ignore-private | ||
4798 | # ignore-auth | ||
4799 | # max-stale=NN | ||
4800 | # refresh-ims | ||
4801 | # store-stale | ||
4802 | # | ||
4803 | # override-expire enforces min age even if the server | ||
4804 | # sent an explicit expiry time (e.g., with the | ||
4805 | # Expires: header or Cache-Control: max-age). Doing this | ||
4806 | # VIOLATES the HTTP standard. Enabling this feature | ||
4807 | # could make you liable for problems which it causes. | ||
4808 | # | ||
4809 | # Note: override-expire does not enforce staleness - it only extends | ||
4810 | # freshness / min. If the server returns a Expires time which | ||
4811 | # is longer than your max time, Squid will still consider | ||
4812 | # the object fresh for that period of time. | ||
4813 | # | ||
4814 | # override-lastmod enforces min age even on objects | ||
4815 | # that were modified recently. | ||
4816 | # | ||
4817 | # reload-into-ims changes a client no-cache or ``reload'' | ||
4818 | # request for a cached entry into a conditional request using | ||
4819 | # If-Modified-Since and/or If-None-Match headers, provided the | ||
4820 | # cached entry has a Last-Modified and/or a strong ETag header. | ||
4821 | # Doing this VIOLATES the HTTP standard. Enabling this feature | ||
4822 | # could make you liable for problems which it causes. | ||
4823 | # | ||
4824 | # ignore-reload ignores a client no-cache or ``reload'' | ||
4825 | # header. Doing this VIOLATES the HTTP standard. Enabling | ||
4826 | # this feature could make you liable for problems which | ||
4827 | # it causes. | ||
4828 | # | ||
4829 | # ignore-no-store ignores any ``Cache-control: no-store'' | ||
4830 | # headers received from a server. Doing this VIOLATES | ||
4831 | # the HTTP standard. Enabling this feature could make you | ||
4832 | # liable for problems which it causes. | ||
4833 | # | ||
4834 | # ignore-must-revalidate ignores any ``Cache-Control: must-revalidate`` | ||
4835 | # headers received from a server. Doing this VIOLATES | ||
4836 | # the HTTP standard. Enabling this feature could make you | ||
4837 | # liable for problems which it causes. | ||
4838 | # | ||
4839 | # ignore-private ignores any ``Cache-control: private'' | ||
4840 | # headers received from a server. Doing this VIOLATES | ||
4841 | # the HTTP standard. Enabling this feature could make you | ||
4842 | # liable for problems which it causes. | ||
4843 | # | ||
4844 | # ignore-auth caches responses to requests with authorization, | ||
4845 | # as if the originserver had sent ``Cache-control: public'' | ||
4846 | # in the response header. Doing this VIOLATES the HTTP standard. | ||
4847 | # Enabling this feature could make you liable for problems which | ||
4848 | # it causes. | ||
4849 | # | ||
4850 | # refresh-ims causes squid to contact the origin server | ||
4851 | # when a client issues an If-Modified-Since request. This | ||
4852 | # ensures that the client will receive an updated version | ||
4853 | # if one is available. | ||
4854 | # | ||
4855 | # store-stale stores responses even if they don't have explicit | ||
4856 | # freshness or a validator (i.e., Last-Modified or an ETag) | ||
4857 | # present, or if they're already stale. By default, Squid will | ||
4858 | # not cache such responses because they usually can't be | ||
4859 | # reused. Note that such responses will be stale by default. | ||
4860 | # | ||
4861 | # max-stale=NN provide a maximum staleness factor. Squid won't | ||
4862 | # serve objects more stale than this even if it failed to | ||
4863 | # validate the object. Default: use the max_stale global limit. | ||
4864 | # | ||
4865 | # Basically a cached object is: | ||
4866 | # | ||
4867 | # FRESH if expire > now, else STALE | ||
4868 | # STALE if age > max | ||
4869 | # FRESH if lm-factor < percent, else STALE | ||
4870 | # FRESH if age < min | ||
4871 | # else STALE | ||
4872 | # | ||
4873 | # The refresh_pattern lines are checked in the order listed here. | ||
4874 | # The first entry which matches is used. If none of the entries | ||
4875 | # match the default will be used. | ||
4876 | # | ||
4877 | # Note, you must uncomment all the default lines if you want | ||
4878 | # to change one. The default setting is only active if none is | ||
4879 | # used. | ||
4880 | # | ||
4881 | # | ||
4882 | |||
4883 | # | ||
4884 | # Add any of your own refresh_pattern entries above these. | ||
4885 | # | ||
4886 | refresh_pattern ^ftp: 1440 20% 10080 | ||
4887 | refresh_pattern ^gopher: 1440 0% 1440 | ||
4888 | refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 | ||
4889 | refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 | ||
4890 | # example lin deb packages | ||
4891 | #refresh_pattern (\.deb|\.udeb)$ 129600 100% 129600 | ||
4892 | refresh_pattern . 0 20% 4320 | ||
4893 | |||
4894 | # TAG: quick_abort_min (KB) | ||
4895 | #Default: | ||
4896 | # quick_abort_min 16 KB | ||
4897 | |||
4898 | # TAG: quick_abort_max (KB) | ||
4899 | #Default: | ||
4900 | # quick_abort_max 16 KB | ||
4901 | |||
4902 | # TAG: quick_abort_pct (percent) | ||
4903 | # The cache by default continues downloading aborted requests | ||
4904 | # which are almost completed (less than 16 KB remaining). This | ||
4905 | # may be undesirable on slow (e.g. SLIP) links and/or very busy | ||
4906 | # caches. Impatient users may tie up file descriptors and | ||
4907 | # bandwidth by repeatedly requesting and immediately aborting | ||
4908 | # downloads. | ||
4909 | # | ||
4910 | # When the user aborts a request, Squid will check the | ||
4911 | # quick_abort values to the amount of data transferred until | ||
4912 | # then. | ||
4913 | # | ||
4914 | # If the transfer has less than 'quick_abort_min' KB remaining, | ||
4915 | # it will finish the retrieval. | ||
4916 | # | ||
4917 | # If the transfer has more than 'quick_abort_max' KB remaining, | ||
4918 | # it will abort the retrieval. | ||
4919 | # | ||
4920 | # If more than 'quick_abort_pct' of the transfer has completed, | ||
4921 | # it will finish the retrieval. | ||
4922 | # | ||
4923 | # If you do not want any retrieval to continue after the client | ||
4924 | # has aborted, set both 'quick_abort_min' and 'quick_abort_max' | ||
4925 | # to '0 KB'. | ||
4926 | # | ||
4927 | # If you want retrievals to always continue if they are being | ||
4928 | # cached set 'quick_abort_min' to '-1 KB'. | ||
4929 | #Default: | ||
4930 | # quick_abort_pct 95 | ||
4931 | |||
4932 | # TAG: read_ahead_gap buffer-size | ||
4933 | # The amount of data the cache will buffer ahead of what has been | ||
4934 | # sent to the client when retrieving an object from another server. | ||
4935 | #Default: | ||
4936 | # read_ahead_gap 16 KB | ||
4937 | |||
4938 | # TAG: negative_ttl time-units | ||
4939 | # Set the Default Time-to-Live (TTL) for failed requests. | ||
4940 | # Certain types of failures (such as "connection refused" and | ||
4941 | # "404 Not Found") are able to be negatively-cached for a short time. | ||
4942 | # Modern web servers should provide Expires: header, however if they | ||
4943 | # do not this can provide a minimum TTL. | ||
4944 | # The default is not to cache errors with unknown expiry details. | ||
4945 | # | ||
4946 | # Note that this is different from negative caching of DNS lookups. | ||
4947 | # | ||
4948 | # WARNING: Doing this VIOLATES the HTTP standard. Enabling | ||
4949 | # this feature could make you liable for problems which it | ||
4950 | # causes. | ||
4951 | #Default: | ||
4952 | # negative_ttl 0 seconds | ||
4953 | |||
4954 | # TAG: positive_dns_ttl time-units | ||
4955 | # Upper limit on how long Squid will cache positive DNS responses. | ||
4956 | # Default is 6 hours (360 minutes). This directive must be set | ||
4957 | # larger than negative_dns_ttl. | ||
4958 | #Default: | ||
4959 | # positive_dns_ttl 6 hours | ||
4960 | |||
4961 | # TAG: negative_dns_ttl time-units | ||
4962 | # Time-to-Live (TTL) for negative caching of failed DNS lookups. | ||
4963 | # This also sets the lower cache limit on positive lookups. | ||
4964 | # Minimum value is 1 second, and it is not recommendable to go | ||
4965 | # much below 10 seconds. | ||
4966 | #Default: | ||
4967 | # negative_dns_ttl 1 minutes | ||
4968 | |||
4969 | # TAG: range_offset_limit size [acl acl...] | ||
4970 | # usage: (size) [units] [[!]aclname] | ||
4971 | # | ||
4972 | # Sets an upper limit on how far (number of bytes) into the file | ||
4973 | # a Range request may be to cause Squid to prefetch the whole file. | ||
4974 | # If beyond this limit, Squid forwards the Range request as it is and | ||
4975 | # the result is NOT cached. | ||
4976 | # | ||
4977 | # This is to stop a far ahead range request (lets say start at 17MB) | ||
4978 | # from making Squid fetch the whole object up to that point before | ||
4979 | # sending anything to the client. | ||
4980 | # | ||
4981 | # Multiple range_offset_limit lines may be specified, and they will | ||
4982 | # be searched from top to bottom on each request until a match is found. | ||
4983 | # The first match found will be used. If no line matches a request, the | ||
4984 | # default limit of 0 bytes will be used. | ||
4985 | # | ||
4986 | # 'size' is the limit specified as a number of units. | ||
4987 | # | ||
4988 | # 'units' specifies whether to use bytes, KB, MB, etc. | ||
4989 | # If no units are specified bytes are assumed. | ||
4990 | # | ||
4991 | # A size of 0 causes Squid to never fetch more than the | ||
4992 | # client requested. (default) | ||
4993 | # | ||
4994 | # A size of 'none' causes Squid to always fetch the object from the | ||
4995 | # beginning so it may cache the result. (2.0 style) | ||
4996 | # | ||
4997 | # 'aclname' is the name of a defined ACL. | ||
4998 | # | ||
4999 | # NP: Using 'none' as the byte value here will override any quick_abort settings | ||
5000 | # that may otherwise apply to the range request. The range request will | ||
5001 | # be fully fetched from start to finish regardless of the client | ||
5002 | # actions. This affects bandwidth usage. | ||
5003 | #Default: | ||
5004 | # none | ||
5005 | |||
5006 | # TAG: minimum_expiry_time (seconds) | ||
5007 | # The minimum caching time according to (Expires - Date) | ||
5008 | # headers Squid honors if the object can't be revalidated. | ||
5009 | # The default is 60 seconds. | ||
5010 | # | ||
5011 | # In reverse proxy environments it might be desirable to honor | ||
5012 | # shorter object lifetimes. It is most likely better to make | ||
5013 | # your server return a meaningful Last-Modified header however. | ||
5014 | # | ||
5015 | # In ESI environments where page fragments often have short | ||
5016 | # lifetimes, this will often be best set to 0. | ||
5017 | #Default: | ||
5018 | # minimum_expiry_time 60 seconds | ||
5019 | |||
5020 | # TAG: store_avg_object_size (bytes) | ||
5021 | # Average object size, used to estimate number of objects your | ||
5022 | # cache can hold. The default is 13 KB. | ||
5023 | # | ||
5024 | # This is used to pre-seed the cache index memory allocation to | ||
5025 | # reduce expensive reallocate operations while handling clients | ||
5026 | # traffic. Too-large values may result in memory allocation during | ||
5027 | # peak traffic, too-small values will result in wasted memory. | ||
5028 | # | ||
5029 | # Check the cache manager 'info' report metrics for the real | ||
5030 | # object sizes seen by your Squid before tuning this. | ||
5031 | #Default: | ||
5032 | # store_avg_object_size 13 KB | ||
5033 | |||
5034 | # TAG: store_objects_per_bucket | ||
5035 | # Target number of objects per bucket in the store hash table. | ||
5036 | # Lowering this value increases the total number of buckets and | ||
5037 | # also the storage maintenance rate. The default is 20. | ||
5038 | #Default: | ||
5039 | # store_objects_per_bucket 20 | ||
5040 | |||
5041 | # HTTP OPTIONS | ||
5042 | # ----------------------------------------------------------------------------- | ||
5043 | |||
5044 | # TAG: request_header_max_size (KB) | ||
5045 | # This specifies the maximum size for HTTP headers in a request. | ||
5046 | # Request headers are usually relatively small (about 512 bytes). | ||
5047 | # Placing a limit on the request header size will catch certain | ||
5048 | # bugs (for example with persistent connections) and possibly | ||
5049 | # buffer-overflow or denial-of-service attacks. | ||
5050 | #Default: | ||
5051 | # request_header_max_size 64 KB | ||
5052 | |||
5053 | # TAG: reply_header_max_size (KB) | ||
5054 | # This specifies the maximum size for HTTP headers in a reply. | ||
5055 | # Reply headers are usually relatively small (about 512 bytes). | ||
5056 | # Placing a limit on the reply header size will catch certain | ||
5057 | # bugs (for example with persistent connections) and possibly | ||
5058 | # buffer-overflow or denial-of-service attacks. | ||
5059 | #Default: | ||
5060 | # reply_header_max_size 64 KB | ||
5061 | |||
5062 | # TAG: request_body_max_size (bytes) | ||
5063 | # This specifies the maximum size for an HTTP request body. | ||
5064 | # In other words, the maximum size of a PUT/POST request. | ||
5065 | # A user who attempts to send a request with a body larger | ||
5066 | # than this limit receives an "Invalid Request" error message. | ||
5067 | # If you set this parameter to a zero (the default), there will | ||
5068 | # be no limit imposed. | ||
5069 | # | ||
5070 | # See also client_request_buffer_max_size for an alternative | ||
5071 | # limitation on client uploads which can be configured. | ||
5072 | #Default: | ||
5073 | # No limit. | ||
5074 | |||
5075 | # TAG: client_request_buffer_max_size (bytes) | ||
5076 | # This specifies the maximum buffer size of a client request. | ||
5077 | # It prevents squid eating too much memory when somebody uploads | ||
5078 | # a large file. | ||
5079 | #Default: | ||
5080 | # client_request_buffer_max_size 512 KB | ||
5081 | |||
5082 | # TAG: broken_posts | ||
5083 | # A list of ACL elements which, if matched, causes Squid to send | ||
5084 | # an extra CRLF pair after the body of a PUT/POST request. | ||
5085 | # | ||
5086 | # Some HTTP servers has broken implementations of PUT/POST, | ||
5087 | # and rely on an extra CRLF pair sent by some WWW clients. | ||
5088 | # | ||
5089 | # Quote from RFC2616 section 4.1 on this matter: | ||
5090 | # | ||
5091 | # Note: certain buggy HTTP/1.0 client implementations generate an | ||
5092 | # extra CRLF's after a POST request. To restate what is explicitly | ||
5093 | # forbidden by the BNF, an HTTP/1.1 client must not preface or follow | ||
5094 | # a request with an extra CRLF. | ||
5095 | # | ||
5096 | # This clause only supports fast acl types. | ||
5097 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
5098 | # | ||
5099 | #Example: | ||
5100 | # acl buggy_server url_regex ^http://.... | ||
5101 | # broken_posts allow buggy_server | ||
5102 | #Default: | ||
5103 | # Obey RFC 2616. | ||
5104 | |||
5105 | # TAG: adaptation_uses_indirect_client on|off | ||
5106 | # Controls whether the indirect client IP address (instead of the direct | ||
5107 | # client IP address) is passed to adaptation services. | ||
5108 | # | ||
5109 | # See also: follow_x_forwarded_for adaptation_send_client_ip | ||
5110 | #Default: | ||
5111 | # adaptation_uses_indirect_client on | ||
5112 | |||
5113 | # TAG: via on|off | ||
5114 | # If set (default), Squid will include a Via header in requests and | ||
5115 | # replies as required by RFC2616. | ||
5116 | #Default: | ||
5117 | # via on | ||
5118 | |||
5119 | # TAG: ie_refresh on|off | ||
5120 | # Microsoft Internet Explorer up until version 5.5 Service | ||
5121 | # Pack 1 has an issue with transparent proxies, wherein it | ||
5122 | # is impossible to force a refresh. Turning this on provides | ||
5123 | # a partial fix to the problem, by causing all IMS-REFRESH | ||
5124 | # requests from older IE versions to check the origin server | ||
5125 | # for fresh content. This reduces hit ratio by some amount | ||
5126 | # (~10% in my experience), but allows users to actually get | ||
5127 | # fresh content when they want it. Note because Squid | ||
5128 | # cannot tell if the user is using 5.5 or 5.5SP1, the behavior | ||
5129 | # of 5.5 is unchanged from old versions of Squid (i.e. a | ||
5130 | # forced refresh is impossible). Newer versions of IE will, | ||
5131 | # hopefully, continue to have the new behavior and will be | ||
5132 | # handled based on that assumption. This option defaults to | ||
5133 | # the old Squid behavior, which is better for hit ratios but | ||
5134 | # worse for clients using IE, if they need to be able to | ||
5135 | # force fresh content. | ||
5136 | #Default: | ||
5137 | # ie_refresh off | ||
5138 | |||
5139 | # TAG: vary_ignore_expire on|off | ||
5140 | # Many HTTP servers supporting Vary gives such objects | ||
5141 | # immediate expiry time with no cache-control header | ||
5142 | # when requested by a HTTP/1.0 client. This option | ||
5143 | # enables Squid to ignore such expiry times until | ||
5144 | # HTTP/1.1 is fully implemented. | ||
5145 | # | ||
5146 | # WARNING: If turned on this may eventually cause some | ||
5147 | # varying objects not intended for caching to get cached. | ||
5148 | #Default: | ||
5149 | # vary_ignore_expire off | ||
5150 | |||
5151 | # TAG: request_entities | ||
5152 | # Squid defaults to deny GET and HEAD requests with request entities, | ||
5153 | # as the meaning of such requests are undefined in the HTTP standard | ||
5154 | # even if not explicitly forbidden. | ||
5155 | # | ||
5156 | # Set this directive to on if you have clients which insists | ||
5157 | # on sending request entities in GET or HEAD requests. But be warned | ||
5158 | # that there is server software (both proxies and web servers) which | ||
5159 | # can fail to properly process this kind of request which may make you | ||
5160 | # vulnerable to cache pollution attacks if enabled. | ||
5161 | #Default: | ||
5162 | # request_entities off | ||
5163 | |||
5164 | # TAG: request_header_access | ||
5165 | # Usage: request_header_access header_name allow|deny [!]aclname ... | ||
5166 | # | ||
5167 | # WARNING: Doing this VIOLATES the HTTP standard. Enabling | ||
5168 | # this feature could make you liable for problems which it | ||
5169 | # causes. | ||
5170 | # | ||
5171 | # This option replaces the old 'anonymize_headers' and the | ||
5172 | # older 'http_anonymizer' option with something that is much | ||
5173 | # more configurable. A list of ACLs for each header name allows | ||
5174 | # removal of specific header fields under specific conditions. | ||
5175 | # | ||
5176 | # This option only applies to outgoing HTTP request headers (i.e., | ||
5177 | # headers sent by Squid to the next HTTP hop such as a cache peer | ||
5178 | # or an origin server). The option has no effect during cache hit | ||
5179 | # detection. The equivalent adaptation vectoring point in ICAP | ||
5180 | # terminology is post-cache REQMOD. | ||
5181 | # | ||
5182 | # The option is applied to individual outgoing request header | ||
5183 | # fields. For each request header field F, Squid uses the first | ||
5184 | # qualifying sets of request_header_access rules: | ||
5185 | # | ||
5186 | # 1. Rules with header_name equal to F's name. | ||
5187 | # 2. Rules with header_name 'Other', provided F's name is not | ||
5188 | # on the hard-coded list of commonly used HTTP header names. | ||
5189 | # 3. Rules with header_name 'All'. | ||
5190 | # | ||
5191 | # Within that qualifying rule set, rule ACLs are checked as usual. | ||
5192 | # If ACLs of an "allow" rule match, the header field is allowed to | ||
5193 | # go through as is. If ACLs of a "deny" rule match, the header is | ||
5194 | # removed and request_header_replace is then checked to identify | ||
5195 | # if the removed header has a replacement. If no rules within the | ||
5196 | # set have matching ACLs, the header field is left as is. | ||
5197 | # | ||
5198 | # For example, to achieve the same behavior as the old | ||
5199 | # 'http_anonymizer standard' option, you should use: | ||
5200 | # | ||
5201 | # request_header_access From deny all | ||
5202 | # request_header_access Referer deny all | ||
5203 | # request_header_access User-Agent deny all | ||
5204 | # | ||
5205 | # Or, to reproduce the old 'http_anonymizer paranoid' feature | ||
5206 | # you should use: | ||
5207 | # | ||
5208 | # request_header_access Authorization allow all | ||
5209 | # request_header_access Proxy-Authorization allow all | ||
5210 | # request_header_access Cache-Control allow all | ||
5211 | # request_header_access Content-Length allow all | ||
5212 | # request_header_access Content-Type allow all | ||
5213 | # request_header_access Date allow all | ||
5214 | # request_header_access Host allow all | ||
5215 | # request_header_access If-Modified-Since allow all | ||
5216 | # request_header_access Pragma allow all | ||
5217 | # request_header_access Accept allow all | ||
5218 | # request_header_access Accept-Charset allow all | ||
5219 | # request_header_access Accept-Encoding allow all | ||
5220 | # request_header_access Accept-Language allow all | ||
5221 | # request_header_access Connection allow all | ||
5222 | # request_header_access All deny all | ||
5223 | # | ||
5224 | # HTTP reply headers are controlled with the reply_header_access directive. | ||
5225 | # | ||
5226 | # By default, all headers are allowed (no anonymizing is performed). | ||
5227 | #Default: | ||
5228 | # No limits. | ||
5229 | |||
5230 | # TAG: reply_header_access | ||
5231 | # Usage: reply_header_access header_name allow|deny [!]aclname ... | ||
5232 | # | ||
5233 | # WARNING: Doing this VIOLATES the HTTP standard. Enabling | ||
5234 | # this feature could make you liable for problems which it | ||
5235 | # causes. | ||
5236 | # | ||
5237 | # This option only applies to reply headers, i.e., from the | ||
5238 | # server to the client. | ||
5239 | # | ||
5240 | # This is the same as request_header_access, but in the other | ||
5241 | # direction. Please see request_header_access for detailed | ||
5242 | # documentation. | ||
5243 | # | ||
5244 | # For example, to achieve the same behavior as the old | ||
5245 | # 'http_anonymizer standard' option, you should use: | ||
5246 | # | ||
5247 | # reply_header_access Server deny all | ||
5248 | # reply_header_access WWW-Authenticate deny all | ||
5249 | # reply_header_access Link deny all | ||
5250 | # | ||
5251 | # Or, to reproduce the old 'http_anonymizer paranoid' feature | ||
5252 | # you should use: | ||
5253 | # | ||
5254 | # reply_header_access Allow allow all | ||
5255 | # reply_header_access WWW-Authenticate allow all | ||
5256 | # reply_header_access Proxy-Authenticate allow all | ||
5257 | # reply_header_access Cache-Control allow all | ||
5258 | # reply_header_access Content-Encoding allow all | ||
5259 | # reply_header_access Content-Length allow all | ||
5260 | # reply_header_access Content-Type allow all | ||
5261 | # reply_header_access Date allow all | ||
5262 | # reply_header_access Expires allow all | ||
5263 | # reply_header_access Last-Modified allow all | ||
5264 | # reply_header_access Location allow all | ||
5265 | # reply_header_access Pragma allow all | ||
5266 | # reply_header_access Content-Language allow all | ||
5267 | # reply_header_access Retry-After allow all | ||
5268 | # reply_header_access Title allow all | ||
5269 | # reply_header_access Content-Disposition allow all | ||
5270 | # reply_header_access Connection allow all | ||
5271 | # reply_header_access All deny all | ||
5272 | # | ||
5273 | # HTTP request headers are controlled with the request_header_access directive. | ||
5274 | # | ||
5275 | # By default, all headers are allowed (no anonymizing is | ||
5276 | # performed). | ||
5277 | #Default: | ||
5278 | # No limits. | ||
5279 | |||
5280 | # TAG: request_header_replace | ||
5281 | # Usage: request_header_replace header_name message | ||
5282 | # Example: request_header_replace User-Agent Nutscrape/1.0 (CP/M; 8-bit) | ||
5283 | # | ||
5284 | # This option allows you to change the contents of headers | ||
5285 | # denied with request_header_access above, by replacing them | ||
5286 | # with some fixed string. | ||
5287 | # | ||
5288 | # This only applies to request headers, not reply headers. | ||
5289 | # | ||
5290 | # By default, headers are removed if denied. | ||
5291 | #Default: | ||
5292 | # none | ||
5293 | |||
5294 | # TAG: reply_header_replace | ||
5295 | # Usage: reply_header_replace header_name message | ||
5296 | # Example: reply_header_replace Server Foo/1.0 | ||
5297 | # | ||
5298 | # This option allows you to change the contents of headers | ||
5299 | # denied with reply_header_access above, by replacing them | ||
5300 | # with some fixed string. | ||
5301 | # | ||
5302 | # This only applies to reply headers, not request headers. | ||
5303 | # | ||
5304 | # By default, headers are removed if denied. | ||
5305 | #Default: | ||
5306 | # none | ||
5307 | |||
5308 | # TAG: request_header_add | ||
5309 | # Usage: request_header_add field-name field-value acl1 [acl2] ... | ||
5310 | # Example: request_header_add X-Client-CA "CA=%ssl::>cert_issuer" all | ||
5311 | # | ||
5312 | # This option adds header fields to outgoing HTTP requests (i.e., | ||
5313 | # request headers sent by Squid to the next HTTP hop such as a | ||
5314 | # cache peer or an origin server). The option has no effect during | ||
5315 | # cache hit detection. The equivalent adaptation vectoring point | ||
5316 | # in ICAP terminology is post-cache REQMOD. | ||
5317 | # | ||
5318 | # Field-name is a token specifying an HTTP header name. If a | ||
5319 | # standard HTTP header name is used, Squid does not check whether | ||
5320 | # the new header conflicts with any existing headers or violates | ||
5321 | # HTTP rules. If the request to be modified already contains a | ||
5322 | # field with the same name, the old field is preserved but the | ||
5323 | # header field values are not merged. | ||
5324 | # | ||
5325 | # Field-value is either a token or a quoted string. If quoted | ||
5326 | # string format is used, then the surrounding quotes are removed | ||
5327 | # while escape sequences and %macros are processed. | ||
5328 | # | ||
5329 | # In theory, all of the logformat codes can be used as %macros. | ||
5330 | # However, unlike logging (which happens at the very end of | ||
5331 | # transaction lifetime), the transaction may not yet have enough | ||
5332 | # information to expand a macro when the new header value is needed. | ||
5333 | # And some information may already be available to Squid but not yet | ||
5334 | # committed where the macro expansion code can access it (report | ||
5335 | # such instances!). The macro will be expanded into a single dash | ||
5336 | # ('-') in such cases. Not all macros have been tested. | ||
5337 | # | ||
5338 | # One or more Squid ACLs may be specified to restrict header | ||
5339 | # injection to matching requests. As always in squid.conf, all | ||
5340 | # ACLs in an option ACL list must be satisfied for the insertion | ||
5341 | # to happen. The request_header_add option supports fast ACLs | ||
5342 | # only. | ||
5343 | #Default: | ||
5344 | # none | ||
5345 | |||
5346 | # TAG: note | ||
5347 | # This option used to log custom information about the master | ||
5348 | # transaction. For example, an admin may configure Squid to log | ||
5349 | # which "user group" the transaction belongs to, where "user group" | ||
5350 | # will be determined based on a set of ACLs and not [just] | ||
5351 | # authentication information. | ||
5352 | # Values of key/value pairs can be logged using %{key}note macros: | ||
5353 | # | ||
5354 | # note key value acl ... | ||
5355 | # logformat myFormat ... %{key}note ... | ||
5356 | #Default: | ||
5357 | # none | ||
5358 | |||
5359 | # TAG: relaxed_header_parser on|off|warn | ||
5360 | # In the default "on" setting Squid accepts certain forms | ||
5361 | # of non-compliant HTTP messages where it is unambiguous | ||
5362 | # what the sending application intended even if the message | ||
5363 | # is not correctly formatted. The messages is then normalized | ||
5364 | # to the correct form when forwarded by Squid. | ||
5365 | # | ||
5366 | # If set to "warn" then a warning will be emitted in cache.log | ||
5367 | # each time such HTTP error is encountered. | ||
5368 | # | ||
5369 | # If set to "off" then such HTTP errors will cause the request | ||
5370 | # or response to be rejected. | ||
5371 | #Default: | ||
5372 | # relaxed_header_parser on | ||
5373 | |||
5374 | # TAG: collapsed_forwarding (on|off) | ||
5375 | # When enabled, instead of forwarding each concurrent request for | ||
5376 | # the same URL, Squid just sends the first of them. The other, so | ||
5377 | # called "collapsed" requests, wait for the response to the first | ||
5378 | # request and, if it happens to be cachable, use that response. | ||
5379 | # Here, "concurrent requests" means "received after the first | ||
5380 | # request headers were parsed and before the corresponding response | ||
5381 | # headers were parsed". | ||
5382 | # | ||
5383 | # This feature is disabled by default: enabling collapsed | ||
5384 | # forwarding needlessly delays forwarding requests that look | ||
5385 | # cachable (when they are collapsed) but then need to be forwarded | ||
5386 | # individually anyway because they end up being for uncachable | ||
5387 | # content. However, in some cases, such as acceleration of highly | ||
5388 | # cachable content with periodic or grouped expiration times, the | ||
5389 | # gains from collapsing [large volumes of simultaneous refresh | ||
5390 | # requests] outweigh losses from such delays. | ||
5391 | # | ||
5392 | # Squid collapses two kinds of requests: regular client requests | ||
5393 | # received on one of the listening ports and internal "cache | ||
5394 | # revalidation" requests which are triggered by those regular | ||
5395 | # requests hitting a stale cached object. Revalidation collapsing | ||
5396 | # is currently disabled for Squid instances containing SMP-aware | ||
5397 | # disk or memory caches and for Vary-controlled cached objects. | ||
5398 | #Default: | ||
5399 | # collapsed_forwarding off | ||
5400 | |||
5401 | # TIMEOUTS | ||
5402 | # ----------------------------------------------------------------------------- | ||
5403 | |||
5404 | # TAG: forward_timeout time-units | ||
5405 | # This parameter specifies how long Squid should at most attempt in | ||
5406 | # finding a forwarding path for the request before giving up. | ||
5407 | #Default: | ||
5408 | # forward_timeout 4 minutes | ||
5409 | |||
5410 | # TAG: connect_timeout time-units | ||
5411 | # This parameter specifies how long to wait for the TCP connect to | ||
5412 | # the requested server or peer to complete before Squid should | ||
5413 | # attempt to find another path where to forward the request. | ||
5414 | #Default: | ||
5415 | # connect_timeout 1 minute | ||
5416 | |||
5417 | # TAG: peer_connect_timeout time-units | ||
5418 | # This parameter specifies how long to wait for a pending TCP | ||
5419 | # connection to a peer cache. The default is 30 seconds. You | ||
5420 | # may also set different timeout values for individual neighbors | ||
5421 | # with the 'connect-timeout' option on a 'cache_peer' line. | ||
5422 | #Default: | ||
5423 | # peer_connect_timeout 30 seconds | ||
5424 | |||
5425 | # TAG: read_timeout time-units | ||
5426 | # Applied on peer server connections. | ||
5427 | # | ||
5428 | # After each successful read(), the timeout will be extended by this | ||
5429 | # amount. If no data is read again after this amount of time, | ||
5430 | # the request is aborted and logged with ERR_READ_TIMEOUT. | ||
5431 | # | ||
5432 | # The default is 15 minutes. | ||
5433 | #Default: | ||
5434 | # read_timeout 15 minutes | ||
5435 | |||
5436 | # TAG: write_timeout time-units | ||
5437 | # This timeout is tracked for all connections that have data | ||
5438 | # available for writing and are waiting for the socket to become | ||
5439 | # ready. After each successful write, the timeout is extended by | ||
5440 | # the configured amount. If Squid has data to write but the | ||
5441 | # connection is not ready for the configured duration, the | ||
5442 | # transaction associated with the connection is terminated. The | ||
5443 | # default is 15 minutes. | ||
5444 | #Default: | ||
5445 | # write_timeout 15 minutes | ||
5446 | |||
5447 | # TAG: request_timeout | ||
5448 | # How long to wait for complete HTTP request headers after initial | ||
5449 | # connection establishment. | ||
5450 | #Default: | ||
5451 | # request_timeout 5 minutes | ||
5452 | |||
5453 | # TAG: client_idle_pconn_timeout | ||
5454 | # How long to wait for the next HTTP request on a persistent | ||
5455 | # client connection after the previous request completes. | ||
5456 | #Default: | ||
5457 | # client_idle_pconn_timeout 2 minutes | ||
5458 | |||
5459 | # TAG: ftp_client_idle_timeout | ||
5460 | # How long to wait for an FTP request on a connection to Squid ftp_port. | ||
5461 | # Many FTP clients do not deal with idle connection closures well, | ||
5462 | # necessitating a longer default timeout than client_idle_pconn_timeout | ||
5463 | # used for incoming HTTP requests. | ||
5464 | #Default: | ||
5465 | # ftp_client_idle_timeout 30 minutes | ||
5466 | |||
5467 | # TAG: client_lifetime time-units | ||
5468 | # The maximum amount of time a client (browser) is allowed to | ||
5469 | # remain connected to the cache process. This protects the Cache | ||
5470 | # from having a lot of sockets (and hence file descriptors) tied up | ||
5471 | # in a CLOSE_WAIT state from remote clients that go away without | ||
5472 | # properly shutting down (either because of a network failure or | ||
5473 | # because of a poor client implementation). The default is one | ||
5474 | # day, 1440 minutes. | ||
5475 | # | ||
5476 | # NOTE: The default value is intended to be much larger than any | ||
5477 | # client would ever need to be connected to your cache. You | ||
5478 | # should probably change client_lifetime only as a last resort. | ||
5479 | # If you seem to have many client connections tying up | ||
5480 | # filedescriptors, we recommend first tuning the read_timeout, | ||
5481 | # request_timeout, persistent_request_timeout and quick_abort values. | ||
5482 | #Default: | ||
5483 | # client_lifetime 1 day | ||
5484 | |||
5485 | # TAG: half_closed_clients | ||
5486 | # Some clients may shutdown the sending side of their TCP | ||
5487 | # connections, while leaving their receiving sides open. Sometimes, | ||
5488 | # Squid can not tell the difference between a half-closed and a | ||
5489 | # fully-closed TCP connection. | ||
5490 | # | ||
5491 | # By default, Squid will immediately close client connections when | ||
5492 | # read(2) returns "no more data to read." | ||
5493 | # | ||
5494 | # Change this option to 'on' and Squid will keep open connections | ||
5495 | # until a read(2) or write(2) on the socket returns an error. | ||
5496 | # This may show some benefits for reverse proxies. But if not | ||
5497 | # it is recommended to leave OFF. | ||
5498 | #Default: | ||
5499 | # half_closed_clients off | ||
5500 | |||
5501 | # TAG: server_idle_pconn_timeout | ||
5502 | # Timeout for idle persistent connections to servers and other | ||
5503 | # proxies. | ||
5504 | #Default: | ||
5505 | # server_idle_pconn_timeout 1 minute | ||
5506 | |||
5507 | # TAG: ident_timeout | ||
5508 | # Maximum time to wait for IDENT lookups to complete. | ||
5509 | # | ||
5510 | # If this is too high, and you enabled IDENT lookups from untrusted | ||
5511 | # users, you might be susceptible to denial-of-service by having | ||
5512 | # many ident requests going at once. | ||
5513 | #Default: | ||
5514 | # ident_timeout 10 seconds | ||
5515 | |||
5516 | # TAG: shutdown_lifetime time-units | ||
5517 | # When SIGTERM or SIGHUP is received, the cache is put into | ||
5518 | # "shutdown pending" mode until all active sockets are closed. | ||
5519 | # This value is the lifetime to set for all open descriptors | ||
5520 | # during shutdown mode. Any active clients after this many | ||
5521 | # seconds will receive a 'timeout' message. | ||
5522 | #Default: | ||
5523 | # shutdown_lifetime 30 seconds | ||
5524 | |||
5525 | # ADMINISTRATIVE PARAMETERS | ||
5526 | # ----------------------------------------------------------------------------- | ||
5527 | |||
5528 | # TAG: cache_mgr | ||
5529 | # Email-address of local cache manager who will receive | ||
5530 | # mail if the cache dies. The default is "webmaster". | ||
5531 | #Default: | ||
5532 | # cache_mgr webmaster | ||
5533 | |||
5534 | # TAG: mail_from | ||
5535 | # From: email-address for mail sent when the cache dies. | ||
5536 | # The default is to use 'squid@unique_hostname'. | ||
5537 | # | ||
5538 | # See also: unique_hostname directive. | ||
5539 | #Default: | ||
5540 | # none | ||
5541 | |||
5542 | # TAG: mail_program | ||
5543 | # Email program used to send mail if the cache dies. | ||
5544 | # The default is "mail". The specified program must comply | ||
5545 | # with the standard Unix mail syntax: | ||
5546 | # mail-program recipient < mailfile | ||
5547 | # | ||
5548 | # Optional command line options can be specified. | ||
5549 | #Default: | ||
5550 | # mail_program mail | ||
5551 | |||
5552 | # TAG: cache_effective_user | ||
5553 | # If you start Squid as root, it will change its effective/real | ||
5554 | # UID/GID to the user specified below. The default is to change | ||
5555 | # to UID of proxy. | ||
5556 | # see also; cache_effective_group | ||
5557 | #Default: | ||
5558 | # cache_effective_user proxy | ||
5559 | |||
5560 | # TAG: cache_effective_group | ||
5561 | # Squid sets the GID to the effective user's default group ID | ||
5562 | # (taken from the password file) and supplementary group list | ||
5563 | # from the groups membership. | ||
5564 | # | ||
5565 | # If you want Squid to run with a specific GID regardless of | ||
5566 | # the group memberships of the effective user then set this | ||
5567 | # to the group (or GID) you want Squid to run as. When set | ||
5568 | # all other group privileges of the effective user are ignored | ||
5569 | # and only this GID is effective. If Squid is not started as | ||
5570 | # root the user starting Squid MUST be member of the specified | ||
5571 | # group. | ||
5572 | # | ||
5573 | # This option is not recommended by the Squid Team. | ||
5574 | # Our preference is for administrators to configure a secure | ||
5575 | # user account for squid with UID/GID matching system policies. | ||
5576 | #Default: | ||
5577 | # Use system group memberships of the cache_effective_user account | ||
5578 | |||
5579 | # TAG: httpd_suppress_version_string on|off | ||
5580 | # Suppress Squid version string info in HTTP headers and HTML error pages. | ||
5581 | #Default: | ||
5582 | # httpd_suppress_version_string off | ||
5583 | |||
5584 | # TAG: visible_hostname | ||
5585 | # If you want to present a special hostname in error messages, etc, | ||
5586 | # define this. Otherwise, the return value of gethostname() | ||
5587 | # will be used. If you have multiple caches in a cluster and | ||
5588 | # get errors about IP-forwarding you must set them to have individual | ||
5589 | # names with this setting. | ||
5590 | #Default: | ||
5591 | # Automatically detect the system host name | ||
5592 | |||
5593 | # TAG: unique_hostname | ||
5594 | # If you want to have multiple machines with the same | ||
5595 | # 'visible_hostname' you must give each machine a different | ||
5596 | # 'unique_hostname' so forwarding loops can be detected. | ||
5597 | #Default: | ||
5598 | # Copy the value from visible_hostname | ||
5599 | |||
5600 | # TAG: hostname_aliases | ||
5601 | # A list of other DNS names your cache has. | ||
5602 | #Default: | ||
5603 | # none | ||
5604 | |||
5605 | # TAG: umask | ||
5606 | # Minimum umask which should be enforced while the proxy | ||
5607 | # is running, in addition to the umask set at startup. | ||
5608 | # | ||
5609 | # For a traditional octal representation of umasks, start | ||
5610 | # your value with 0. | ||
5611 | #Default: | ||
5612 | # umask 027 | ||
5613 | |||
5614 | # OPTIONS FOR THE CACHE REGISTRATION SERVICE | ||
5615 | # ----------------------------------------------------------------------------- | ||
5616 | # | ||
5617 | # This section contains parameters for the (optional) cache | ||
5618 | # announcement service. This service is provided to help | ||
5619 | # cache administrators locate one another in order to join or | ||
5620 | # create cache hierarchies. | ||
5621 | # | ||
5622 | # An 'announcement' message is sent (via UDP) to the registration | ||
5623 | # service by Squid. By default, the announcement message is NOT | ||
5624 | # SENT unless you enable it with 'announce_period' below. | ||
5625 | # | ||
5626 | # The announcement message includes your hostname, plus the | ||
5627 | # following information from this configuration file: | ||
5628 | # | ||
5629 | # http_port | ||
5630 | # icp_port | ||
5631 | # cache_mgr | ||
5632 | # | ||
5633 | # All current information is processed regularly and made | ||
5634 | # available on the Web at http://www.ircache.net/Cache/Tracker/. | ||
5635 | |||
5636 | # TAG: announce_period | ||
5637 | # This is how frequently to send cache announcements. | ||
5638 | # | ||
5639 | # To enable announcing your cache, just set an announce period. | ||
5640 | # | ||
5641 | # Example: | ||
5642 | # announce_period 1 day | ||
5643 | #Default: | ||
5644 | # Announcement messages disabled. | ||
5645 | |||
5646 | # TAG: announce_host | ||
5647 | # Set the hostname where announce registration messages will be sent. | ||
5648 | # | ||
5649 | # See also announce_port and announce_file | ||
5650 | #Default: | ||
5651 | # announce_host tracker.ircache.net | ||
5652 | |||
5653 | # TAG: announce_file | ||
5654 | # The contents of this file will be included in the announce | ||
5655 | # registration messages. | ||
5656 | #Default: | ||
5657 | # none | ||
5658 | |||
5659 | # TAG: announce_port | ||
5660 | # Set the port where announce registration messages will be sent. | ||
5661 | # | ||
5662 | # See also announce_host and announce_file | ||
5663 | #Default: | ||
5664 | # announce_port 3131 | ||
5665 | |||
5666 | # HTTPD-ACCELERATOR OPTIONS | ||
5667 | # ----------------------------------------------------------------------------- | ||
5668 | |||
5669 | # TAG: httpd_accel_surrogate_id | ||
5670 | # Surrogates (http://www.esi.org/architecture_spec_1.0.html) | ||
5671 | # need an identification token to allow control targeting. Because | ||
5672 | # a farm of surrogates may all perform the same tasks, they may share | ||
5673 | # an identification token. | ||
5674 | #Default: | ||
5675 | # visible_hostname is used if no specific ID is set. | ||
5676 | |||
5677 | # TAG: http_accel_surrogate_remote on|off | ||
5678 | # Remote surrogates (such as those in a CDN) honour the header | ||
5679 | # "Surrogate-Control: no-store-remote". | ||
5680 | # | ||
5681 | # Set this to on to have squid behave as a remote surrogate. | ||
5682 | #Default: | ||
5683 | # http_accel_surrogate_remote off | ||
5684 | |||
5685 | # TAG: esi_parser libxml2|expat|custom | ||
5686 | # ESI markup is not strictly XML compatible. The custom ESI parser | ||
5687 | # will give higher performance, but cannot handle non ASCII character | ||
5688 | # encodings. | ||
5689 | #Default: | ||
5690 | # esi_parser custom | ||
5691 | |||
5692 | # DELAY POOL PARAMETERS | ||
5693 | # ----------------------------------------------------------------------------- | ||
5694 | |||
5695 | # TAG: delay_pools | ||
5696 | # This represents the number of delay pools to be used. For example, | ||
5697 | # if you have one class 2 delay pool and one class 3 delays pool, you | ||
5698 | # have a total of 2 delay pools. | ||
5699 | # | ||
5700 | # See also delay_parameters, delay_class, delay_access for pool | ||
5701 | # configuration details. | ||
5702 | #Default: | ||
5703 | # delay_pools 0 | ||
5704 | |||
5705 | # TAG: delay_class | ||
5706 | # This defines the class of each delay pool. There must be exactly one | ||
5707 | # delay_class line for each delay pool. For example, to define two | ||
5708 | # delay pools, one of class 2 and one of class 3, the settings above | ||
5709 | # and here would be: | ||
5710 | # | ||
5711 | # Example: | ||
5712 | # delay_pools 4 # 4 delay pools | ||
5713 | # delay_class 1 2 # pool 1 is a class 2 pool | ||
5714 | # delay_class 2 3 # pool 2 is a class 3 pool | ||
5715 | # delay_class 3 4 # pool 3 is a class 4 pool | ||
5716 | # delay_class 4 5 # pool 4 is a class 5 pool | ||
5717 | # | ||
5718 | # The delay pool classes are: | ||
5719 | # | ||
5720 | # class 1 Everything is limited by a single aggregate | ||
5721 | # bucket. | ||
5722 | # | ||
5723 | # class 2 Everything is limited by a single aggregate | ||
5724 | # bucket as well as an "individual" bucket chosen | ||
5725 | # from bits 25 through 32 of the IPv4 address. | ||
5726 | # | ||
5727 | # class 3 Everything is limited by a single aggregate | ||
5728 | # bucket as well as a "network" bucket chosen | ||
5729 | # from bits 17 through 24 of the IP address and a | ||
5730 | # "individual" bucket chosen from bits 17 through | ||
5731 | # 32 of the IPv4 address. | ||
5732 | # | ||
5733 | # class 4 Everything in a class 3 delay pool, with an | ||
5734 | # additional limit on a per user basis. This | ||
5735 | # only takes effect if the username is established | ||
5736 | # in advance - by forcing authentication in your | ||
5737 | # http_access rules. | ||
5738 | # | ||
5739 | # class 5 Requests are grouped according their tag (see | ||
5740 | # external_acl's tag= reply). | ||
5741 | # | ||
5742 | # | ||
5743 | # Each pool also requires a delay_parameters directive to configure the pool size | ||
5744 | # and speed limits used whenever the pool is applied to a request. Along with | ||
5745 | # a set of delay_access directives to determine when it is used. | ||
5746 | # | ||
5747 | # NOTE: If an IP address is a.b.c.d | ||
5748 | # -> bits 25 through 32 are "d" | ||
5749 | # -> bits 17 through 24 are "c" | ||
5750 | # -> bits 17 through 32 are "c * 256 + d" | ||
5751 | # | ||
5752 | # NOTE-2: Due to the use of bitmasks in class 2,3,4 pools they only apply to | ||
5753 | # IPv4 traffic. Class 1 and 5 pools may be used with IPv6 traffic. | ||
5754 | # | ||
5755 | # This clause only supports fast acl types. | ||
5756 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
5757 | # | ||
5758 | # See also delay_parameters and delay_access. | ||
5759 | #Default: | ||
5760 | # none | ||
5761 | |||
5762 | # TAG: delay_access | ||
5763 | # This is used to determine which delay pool a request falls into. | ||
5764 | # | ||
5765 | # delay_access is sorted per pool and the matching starts with pool 1, | ||
5766 | # then pool 2, ..., and finally pool N. The first delay pool where the | ||
5767 | # request is allowed is selected for the request. If it does not allow | ||
5768 | # the request to any pool then the request is not delayed (default). | ||
5769 | # | ||
5770 | # For example, if you want some_big_clients in delay | ||
5771 | # pool 1 and lotsa_little_clients in delay pool 2: | ||
5772 | # | ||
5773 | # delay_access 1 allow some_big_clients | ||
5774 | # delay_access 1 deny all | ||
5775 | # delay_access 2 allow lotsa_little_clients | ||
5776 | # delay_access 2 deny all | ||
5777 | # delay_access 3 allow authenticated_clients | ||
5778 | # | ||
5779 | # See also delay_parameters and delay_class. | ||
5780 | # | ||
5781 | #Default: | ||
5782 | # Deny using the pool, unless allow rules exist in squid.conf for the pool. | ||
5783 | |||
5784 | # TAG: delay_parameters | ||
5785 | # This defines the parameters for a delay pool. Each delay pool has | ||
5786 | # a number of "buckets" associated with it, as explained in the | ||
5787 | # description of delay_class. | ||
5788 | # | ||
5789 | # For a class 1 delay pool, the syntax is: | ||
5790 | # delay_class pool 1 | ||
5791 | # delay_parameters pool aggregate | ||
5792 | # | ||
5793 | # For a class 2 delay pool: | ||
5794 | # delay_class pool 2 | ||
5795 | # delay_parameters pool aggregate individual | ||
5796 | # | ||
5797 | # For a class 3 delay pool: | ||
5798 | # delay_class pool 3 | ||
5799 | # delay_parameters pool aggregate network individual | ||
5800 | # | ||
5801 | # For a class 4 delay pool: | ||
5802 | # delay_class pool 4 | ||
5803 | # delay_parameters pool aggregate network individual user | ||
5804 | # | ||
5805 | # For a class 5 delay pool: | ||
5806 | # delay_class pool 5 | ||
5807 | # delay_parameters pool tagrate | ||
5808 | # | ||
5809 | # The option variables are: | ||
5810 | # | ||
5811 | # pool a pool number - ie, a number between 1 and the | ||
5812 | # number specified in delay_pools as used in | ||
5813 | # delay_class lines. | ||
5814 | # | ||
5815 | # aggregate the speed limit parameters for the aggregate bucket | ||
5816 | # (class 1, 2, 3). | ||
5817 | # | ||
5818 | # individual the speed limit parameters for the individual | ||
5819 | # buckets (class 2, 3). | ||
5820 | # | ||
5821 | # network the speed limit parameters for the network buckets | ||
5822 | # (class 3). | ||
5823 | # | ||
5824 | # user the speed limit parameters for the user buckets | ||
5825 | # (class 4). | ||
5826 | # | ||
5827 | # tagrate the speed limit parameters for the tag buckets | ||
5828 | # (class 5). | ||
5829 | # | ||
5830 | # A pair of delay parameters is written restore/maximum, where restore is | ||
5831 | # the number of bytes (not bits - modem and network speeds are usually | ||
5832 | # quoted in bits) per second placed into the bucket, and maximum is the | ||
5833 | # maximum number of bytes which can be in the bucket at any time. | ||
5834 | # | ||
5835 | # There must be one delay_parameters line for each delay pool. | ||
5836 | # | ||
5837 | # | ||
5838 | # For example, if delay pool number 1 is a class 2 delay pool as in the | ||
5839 | # above example, and is being used to strictly limit each host to 64Kbit/sec | ||
5840 | # (plus overheads), with no overall limit, the line is: | ||
5841 | # | ||
5842 | # delay_parameters 1 none 8000/8000 | ||
5843 | # | ||
5844 | # Note that 8 x 8K Byte/sec -> 64K bit/sec. | ||
5845 | # | ||
5846 | # Note that the word 'none' is used to represent no limit. | ||
5847 | # | ||
5848 | # | ||
5849 | # And, if delay pool number 2 is a class 3 delay pool as in the above | ||
5850 | # example, and you want to limit it to a total of 256Kbit/sec (strict limit) | ||
5851 | # with each 8-bit network permitted 64Kbit/sec (strict limit) and each | ||
5852 | # individual host permitted 4800bit/sec with a bucket maximum size of 64Kbits | ||
5853 | # to permit a decent web page to be downloaded at a decent speed | ||
5854 | # (if the network is not being limited due to overuse) but slow down | ||
5855 | # large downloads more significantly: | ||
5856 | # | ||
5857 | # delay_parameters 2 32000/32000 8000/8000 600/8000 | ||
5858 | # | ||
5859 | # Note that 8 x 32K Byte/sec -> 256K bit/sec. | ||
5860 | # 8 x 8K Byte/sec -> 64K bit/sec. | ||
5861 | # 8 x 600 Byte/sec -> 4800 bit/sec. | ||
5862 | # | ||
5863 | # | ||
5864 | # Finally, for a class 4 delay pool as in the example - each user will | ||
5865 | # be limited to 128Kbits/sec no matter how many workstations they are logged into.: | ||
5866 | # | ||
5867 | # delay_parameters 4 32000/32000 8000/8000 600/64000 16000/16000 | ||
5868 | # | ||
5869 | # | ||
5870 | # See also delay_class and delay_access. | ||
5871 | # | ||
5872 | #Default: | ||
5873 | # none | ||
5874 | |||
5875 | # TAG: delay_initial_bucket_level (percent, 0-100) | ||
5876 | # The initial bucket percentage is used to determine how much is put | ||
5877 | # in each bucket when squid starts, is reconfigured, or first notices | ||
5878 | # a host accessing it (in class 2 and class 3, individual hosts and | ||
5879 | # networks only have buckets associated with them once they have been | ||
5880 | # "seen" by squid). | ||
5881 | #Default: | ||
5882 | # delay_initial_bucket_level 50 | ||
5883 | |||
5884 | # CLIENT DELAY POOL PARAMETERS | ||
5885 | # ----------------------------------------------------------------------------- | ||
5886 | |||
5887 | # TAG: client_delay_pools | ||
5888 | # This option specifies the number of client delay pools used. It must | ||
5889 | # preceed other client_delay_* options. | ||
5890 | # | ||
5891 | # Example: | ||
5892 | # client_delay_pools 2 | ||
5893 | # | ||
5894 | # See also client_delay_parameters and client_delay_access. | ||
5895 | #Default: | ||
5896 | # client_delay_pools 0 | ||
5897 | |||
5898 | # TAG: client_delay_initial_bucket_level (percent, 0-no_limit) | ||
5899 | # This option determines the initial bucket size as a percentage of | ||
5900 | # max_bucket_size from client_delay_parameters. Buckets are created | ||
5901 | # at the time of the "first" connection from the matching IP. Idle | ||
5902 | # buckets are periodically deleted up. | ||
5903 | # | ||
5904 | # You can specify more than 100 percent but note that such "oversized" | ||
5905 | # buckets are not refilled until their size goes down to max_bucket_size | ||
5906 | # from client_delay_parameters. | ||
5907 | # | ||
5908 | # Example: | ||
5909 | # client_delay_initial_bucket_level 50 | ||
5910 | #Default: | ||
5911 | # client_delay_initial_bucket_level 50 | ||
5912 | |||
5913 | # TAG: client_delay_parameters | ||
5914 | # | ||
5915 | # This option configures client-side bandwidth limits using the | ||
5916 | # following format: | ||
5917 | # | ||
5918 | # client_delay_parameters pool speed_limit max_bucket_size | ||
5919 | # | ||
5920 | # pool is an integer ID used for client_delay_access matching. | ||
5921 | # | ||
5922 | # speed_limit is bytes added to the bucket per second. | ||
5923 | # | ||
5924 | # max_bucket_size is the maximum size of a bucket, enforced after any | ||
5925 | # speed_limit additions. | ||
5926 | # | ||
5927 | # Please see the delay_parameters option for more information and | ||
5928 | # examples. | ||
5929 | # | ||
5930 | # Example: | ||
5931 | # client_delay_parameters 1 1024 2048 | ||
5932 | # client_delay_parameters 2 51200 16384 | ||
5933 | # | ||
5934 | # See also client_delay_access. | ||
5935 | # | ||
5936 | #Default: | ||
5937 | # none | ||
5938 | |||
5939 | # TAG: client_delay_access | ||
5940 | # This option determines the client-side delay pool for the | ||
5941 | # request: | ||
5942 | # | ||
5943 | # client_delay_access pool_ID allow|deny acl_name | ||
5944 | # | ||
5945 | # All client_delay_access options are checked in their pool ID | ||
5946 | # order, starting with pool 1. The first checked pool with allowed | ||
5947 | # request is selected for the request. If no ACL matches or there | ||
5948 | # are no client_delay_access options, the request bandwidth is not | ||
5949 | # limited. | ||
5950 | # | ||
5951 | # The ACL-selected pool is then used to find the | ||
5952 | # client_delay_parameters for the request. Client-side pools are | ||
5953 | # not used to aggregate clients. Clients are always aggregated | ||
5954 | # based on their source IP addresses (one bucket per source IP). | ||
5955 | # | ||
5956 | # This clause only supports fast acl types. | ||
5957 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
5958 | # Additionally, only the client TCP connection details are available. | ||
5959 | # ACLs testing HTTP properties will not work. | ||
5960 | # | ||
5961 | # Please see delay_access for more examples. | ||
5962 | # | ||
5963 | # Example: | ||
5964 | # client_delay_access 1 allow low_rate_network | ||
5965 | # client_delay_access 2 allow vips_network | ||
5966 | # | ||
5967 | # | ||
5968 | # See also client_delay_parameters and client_delay_pools. | ||
5969 | #Default: | ||
5970 | # Deny use of the pool, unless allow rules exist in squid.conf for the pool. | ||
5971 | |||
5972 | # WCCPv1 AND WCCPv2 CONFIGURATION OPTIONS | ||
5973 | # ----------------------------------------------------------------------------- | ||
5974 | |||
5975 | # TAG: wccp_router | ||
5976 | # Use this option to define your WCCP ``home'' router for | ||
5977 | # Squid. | ||
5978 | # | ||
5979 | # wccp_router supports a single WCCP(v1) router | ||
5980 | # | ||
5981 | # wccp2_router supports multiple WCCPv2 routers | ||
5982 | # | ||
5983 | # only one of the two may be used at the same time and defines | ||
5984 | # which version of WCCP to use. | ||
5985 | #Default: | ||
5986 | # WCCP disabled. | ||
5987 | |||
5988 | # TAG: wccp2_router | ||
5989 | # Use this option to define your WCCP ``home'' router for | ||
5990 | # Squid. | ||
5991 | # | ||
5992 | # wccp_router supports a single WCCP(v1) router | ||
5993 | # | ||
5994 | # wccp2_router supports multiple WCCPv2 routers | ||
5995 | # | ||
5996 | # only one of the two may be used at the same time and defines | ||
5997 | # which version of WCCP to use. | ||
5998 | #Default: | ||
5999 | # WCCPv2 disabled. | ||
6000 | |||
6001 | # TAG: wccp_version | ||
6002 | # This directive is only relevant if you need to set up WCCP(v1) | ||
6003 | # to some very old and end-of-life Cisco routers. In all other | ||
6004 | # setups it must be left unset or at the default setting. | ||
6005 | # It defines an internal version in the WCCP(v1) protocol, | ||
6006 | # with version 4 being the officially documented protocol. | ||
6007 | # | ||
6008 | # According to some users, Cisco IOS 11.2 and earlier only | ||
6009 | # support WCCP version 3. If you're using that or an earlier | ||
6010 | # version of IOS, you may need to change this value to 3, otherwise | ||
6011 | # do not specify this parameter. | ||
6012 | #Default: | ||
6013 | # wccp_version 4 | ||
6014 | |||
6015 | # TAG: wccp2_rebuild_wait | ||
6016 | # If this is enabled Squid will wait for the cache dir rebuild to finish | ||
6017 | # before sending the first wccp2 HereIAm packet | ||
6018 | #Default: | ||
6019 | # wccp2_rebuild_wait on | ||
6020 | |||
6021 | # TAG: wccp2_forwarding_method | ||
6022 | # WCCP2 allows the setting of forwarding methods between the | ||
6023 | # router/switch and the cache. Valid values are as follows: | ||
6024 | # | ||
6025 | # gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel) | ||
6026 | # l2 - L2 redirect (forward the packet using Layer 2/MAC rewriting) | ||
6027 | # | ||
6028 | # Currently (as of IOS 12.4) cisco routers only support GRE. | ||
6029 | # Cisco switches only support the L2 redirect assignment method. | ||
6030 | #Default: | ||
6031 | # wccp2_forwarding_method gre | ||
6032 | |||
6033 | # TAG: wccp2_return_method | ||
6034 | # WCCP2 allows the setting of return methods between the | ||
6035 | # router/switch and the cache for packets that the cache | ||
6036 | # decides not to handle. Valid values are as follows: | ||
6037 | # | ||
6038 | # gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel) | ||
6039 | # l2 - L2 redirect (forward the packet using Layer 2/MAC rewriting) | ||
6040 | # | ||
6041 | # Currently (as of IOS 12.4) cisco routers only support GRE. | ||
6042 | # Cisco switches only support the L2 redirect assignment. | ||
6043 | # | ||
6044 | # If the "ip wccp redirect exclude in" command has been | ||
6045 | # enabled on the cache interface, then it is still safe for | ||
6046 | # the proxy server to use a l2 redirect method even if this | ||
6047 | # option is set to GRE. | ||
6048 | #Default: | ||
6049 | # wccp2_return_method gre | ||
6050 | |||
6051 | # TAG: wccp2_assignment_method | ||
6052 | # WCCP2 allows the setting of methods to assign the WCCP hash | ||
6053 | # Valid values are as follows: | ||
6054 | # | ||
6055 | # hash - Hash assignment | ||
6056 | # mask - Mask assignment | ||
6057 | # | ||
6058 | # As a general rule, cisco routers support the hash assignment method | ||
6059 | # and cisco switches support the mask assignment method. | ||
6060 | #Default: | ||
6061 | # wccp2_assignment_method hash | ||
6062 | |||
6063 | # TAG: wccp2_service | ||
6064 | # WCCP2 allows for multiple traffic services. There are two | ||
6065 | # types: "standard" and "dynamic". The standard type defines | ||
6066 | # one service id - http (id 0). The dynamic service ids can be from | ||
6067 | # 51 to 255 inclusive. In order to use a dynamic service id | ||
6068 | # one must define the type of traffic to be redirected; this is done | ||
6069 | # using the wccp2_service_info option. | ||
6070 | # | ||
6071 | # The "standard" type does not require a wccp2_service_info option, | ||
6072 | # just specifying the service id will suffice. | ||
6073 | # | ||
6074 | # MD5 service authentication can be enabled by adding | ||
6075 | # "password=<password>" to the end of this service declaration. | ||
6076 | # | ||
6077 | # Examples: | ||
6078 | # | ||
6079 | # wccp2_service standard 0 # for the 'web-cache' standard service | ||
6080 | # wccp2_service dynamic 80 # a dynamic service type which will be | ||
6081 | # # fleshed out with subsequent options. | ||
6082 | # wccp2_service standard 0 password=foo | ||
6083 | #Default: | ||
6084 | # Use the 'web-cache' standard service. | ||
6085 | |||
6086 | # TAG: wccp2_service_info | ||
6087 | # Dynamic WCCPv2 services require further information to define the | ||
6088 | # traffic you wish to have diverted. | ||
6089 | # | ||
6090 | # The format is: | ||
6091 | # | ||
6092 | # wccp2_service_info <id> protocol=<protocol> flags=<flag>,<flag>.. | ||
6093 | # priority=<priority> ports=<port>,<port>.. | ||
6094 | # | ||
6095 | # The relevant WCCPv2 flags: | ||
6096 | # + src_ip_hash, dst_ip_hash | ||
6097 | # + source_port_hash, dst_port_hash | ||
6098 | # + src_ip_alt_hash, dst_ip_alt_hash | ||
6099 | # + src_port_alt_hash, dst_port_alt_hash | ||
6100 | # + ports_source | ||
6101 | # | ||
6102 | # The port list can be one to eight entries. | ||
6103 | # | ||
6104 | # Example: | ||
6105 | # | ||
6106 | # wccp2_service_info 80 protocol=tcp flags=src_ip_hash,ports_source | ||
6107 | # priority=240 ports=80 | ||
6108 | # | ||
6109 | # Note: the service id must have been defined by a previous | ||
6110 | # 'wccp2_service dynamic <id>' entry. | ||
6111 | #Default: | ||
6112 | # none | ||
6113 | |||
6114 | # TAG: wccp2_weight | ||
6115 | # Each cache server gets assigned a set of the destination | ||
6116 | # hash proportional to their weight. | ||
6117 | #Default: | ||
6118 | # wccp2_weight 10000 | ||
6119 | |||
6120 | # TAG: wccp_address | ||
6121 | # Use this option if you require WCCPv2 to use a specific | ||
6122 | # interface address. | ||
6123 | # | ||
6124 | # The default behavior is to not bind to any specific address. | ||
6125 | #Default: | ||
6126 | # Address selected by the operating system. | ||
6127 | |||
6128 | # TAG: wccp2_address | ||
6129 | # Use this option if you require WCCP to use a specific | ||
6130 | # interface address. | ||
6131 | # | ||
6132 | # The default behavior is to not bind to any specific address. | ||
6133 | #Default: | ||
6134 | # Address selected by the operating system. | ||
6135 | |||
6136 | # PERSISTENT CONNECTION HANDLING | ||
6137 | # ----------------------------------------------------------------------------- | ||
6138 | # | ||
6139 | # Also see "pconn_timeout" in the TIMEOUTS section | ||
6140 | |||
6141 | # TAG: client_persistent_connections | ||
6142 | # Persistent connection support for clients. | ||
6143 | # Squid uses persistent connections (when allowed). You can use | ||
6144 | # this option to disable persistent connections with clients. | ||
6145 | #Default: | ||
6146 | # client_persistent_connections on | ||
6147 | |||
6148 | # TAG: server_persistent_connections | ||
6149 | # Persistent connection support for servers. | ||
6150 | # Squid uses persistent connections (when allowed). You can use | ||
6151 | # this option to disable persistent connections with servers. | ||
6152 | #Default: | ||
6153 | # server_persistent_connections on | ||
6154 | |||
6155 | # TAG: persistent_connection_after_error | ||
6156 | # With this directive the use of persistent connections after | ||
6157 | # HTTP errors can be disabled. Useful if you have clients | ||
6158 | # who fail to handle errors on persistent connections proper. | ||
6159 | #Default: | ||
6160 | # persistent_connection_after_error on | ||
6161 | |||
6162 | # TAG: detect_broken_pconn | ||
6163 | # Some servers have been found to incorrectly signal the use | ||
6164 | # of HTTP/1.0 persistent connections even on replies not | ||
6165 | # compatible, causing significant delays. This server problem | ||
6166 | # has mostly been seen on redirects. | ||
6167 | # | ||
6168 | # By enabling this directive Squid attempts to detect such | ||
6169 | # broken replies and automatically assume the reply is finished | ||
6170 | # after 10 seconds timeout. | ||
6171 | #Default: | ||
6172 | # detect_broken_pconn off | ||
6173 | |||
6174 | # CACHE DIGEST OPTIONS | ||
6175 | # ----------------------------------------------------------------------------- | ||
6176 | |||
6177 | # TAG: digest_generation | ||
6178 | # This controls whether the server will generate a Cache Digest | ||
6179 | # of its contents. By default, Cache Digest generation is | ||
6180 | # enabled if Squid is compiled with --enable-cache-digests defined. | ||
6181 | #Default: | ||
6182 | # digest_generation on | ||
6183 | |||
6184 | # TAG: digest_bits_per_entry | ||
6185 | # This is the number of bits of the server's Cache Digest which | ||
6186 | # will be associated with the Digest entry for a given HTTP | ||
6187 | # Method and URL (public key) combination. The default is 5. | ||
6188 | #Default: | ||
6189 | # digest_bits_per_entry 5 | ||
6190 | |||
6191 | # TAG: digest_rebuild_period (seconds) | ||
6192 | # This is the wait time between Cache Digest rebuilds. | ||
6193 | #Default: | ||
6194 | # digest_rebuild_period 1 hour | ||
6195 | |||
6196 | # TAG: digest_rewrite_period (seconds) | ||
6197 | # This is the wait time between Cache Digest writes to | ||
6198 | # disk. | ||
6199 | #Default: | ||
6200 | # digest_rewrite_period 1 hour | ||
6201 | |||
6202 | # TAG: digest_swapout_chunk_size (bytes) | ||
6203 | # This is the number of bytes of the Cache Digest to write to | ||
6204 | # disk at a time. It defaults to 4096 bytes (4KB), the Squid | ||
6205 | # default swap page. | ||
6206 | #Default: | ||
6207 | # digest_swapout_chunk_size 4096 bytes | ||
6208 | |||
6209 | # TAG: digest_rebuild_chunk_percentage (percent, 0-100) | ||
6210 | # This is the percentage of the Cache Digest to be scanned at a | ||
6211 | # time. By default it is set to 10% of the Cache Digest. | ||
6212 | #Default: | ||
6213 | # digest_rebuild_chunk_percentage 10 | ||
6214 | |||
6215 | # SNMP OPTIONS | ||
6216 | # ----------------------------------------------------------------------------- | ||
6217 | |||
6218 | # TAG: snmp_port | ||
6219 | # The port number where Squid listens for SNMP requests. To enable | ||
6220 | # SNMP support set this to a suitable port number. Port number | ||
6221 | # 3401 is often used for the Squid SNMP agent. By default it's | ||
6222 | # set to "0" (disabled) | ||
6223 | # | ||
6224 | # Example: | ||
6225 | # snmp_port 3401 | ||
6226 | #Default: | ||
6227 | # SNMP disabled. | ||
6228 | |||
6229 | # TAG: snmp_access | ||
6230 | # Allowing or denying access to the SNMP port. | ||
6231 | # | ||
6232 | # All access to the agent is denied by default. | ||
6233 | # usage: | ||
6234 | # | ||
6235 | # snmp_access allow|deny [!]aclname ... | ||
6236 | # | ||
6237 | # This clause only supports fast acl types. | ||
6238 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
6239 | # | ||
6240 | #Example: | ||
6241 | # snmp_access allow snmppublic localhost | ||
6242 | # snmp_access deny all | ||
6243 | #Default: | ||
6244 | # Deny, unless rules exist in squid.conf. | ||
6245 | |||
6246 | # TAG: snmp_incoming_address | ||
6247 | # Just like 'udp_incoming_address', but for the SNMP port. | ||
6248 | # | ||
6249 | # snmp_incoming_address is used for the SNMP socket receiving | ||
6250 | # messages from SNMP agents. | ||
6251 | # | ||
6252 | # The default snmp_incoming_address is to listen on all | ||
6253 | # available network interfaces. | ||
6254 | #Default: | ||
6255 | # Accept SNMP packets from all machine interfaces. | ||
6256 | |||
6257 | # TAG: snmp_outgoing_address | ||
6258 | # Just like 'udp_outgoing_address', but for the SNMP port. | ||
6259 | # | ||
6260 | # snmp_outgoing_address is used for SNMP packets returned to SNMP | ||
6261 | # agents. | ||
6262 | # | ||
6263 | # If snmp_outgoing_address is not set it will use the same socket | ||
6264 | # as snmp_incoming_address. Only change this if you want to have | ||
6265 | # SNMP replies sent using another address than where this Squid | ||
6266 | # listens for SNMP queries. | ||
6267 | # | ||
6268 | # NOTE, snmp_incoming_address and snmp_outgoing_address can not have | ||
6269 | # the same value since they both use the same port. | ||
6270 | #Default: | ||
6271 | # Use snmp_incoming_address or an address selected by the operating system. | ||
6272 | |||
6273 | # ICP OPTIONS | ||
6274 | # ----------------------------------------------------------------------------- | ||
6275 | |||
6276 | # TAG: icp_port | ||
6277 | # The port number where Squid sends and receives ICP queries to | ||
6278 | # and from neighbor caches. The standard UDP port for ICP is 3130. | ||
6279 | # | ||
6280 | # Example: | ||
6281 | # icp_port 3130 | ||
6282 | #Default: | ||
6283 | # ICP disabled. | ||
6284 | |||
6285 | # TAG: htcp_port | ||
6286 | # The port number where Squid sends and receives HTCP queries to | ||
6287 | # and from neighbor caches. To turn it on you want to set it to | ||
6288 | # 4827. | ||
6289 | # | ||
6290 | # Example: | ||
6291 | # htcp_port 4827 | ||
6292 | #Default: | ||
6293 | # HTCP disabled. | ||
6294 | |||
6295 | # TAG: log_icp_queries on|off | ||
6296 | # If set, ICP queries are logged to access.log. You may wish | ||
6297 | # do disable this if your ICP load is VERY high to speed things | ||
6298 | # up or to simplify log analysis. | ||
6299 | #Default: | ||
6300 | # log_icp_queries on | ||
6301 | |||
6302 | # TAG: udp_incoming_address | ||
6303 | # udp_incoming_address is used for UDP packets received from other | ||
6304 | # caches. | ||
6305 | # | ||
6306 | # The default behavior is to not bind to any specific address. | ||
6307 | # | ||
6308 | # Only change this if you want to have all UDP queries received on | ||
6309 | # a specific interface/address. | ||
6310 | # | ||
6311 | # NOTE: udp_incoming_address is used by the ICP, HTCP, and DNS | ||
6312 | # modules. Altering it will affect all of them in the same manner. | ||
6313 | # | ||
6314 | # see also; udp_outgoing_address | ||
6315 | # | ||
6316 | # NOTE, udp_incoming_address and udp_outgoing_address can not | ||
6317 | # have the same value since they both use the same port. | ||
6318 | #Default: | ||
6319 | # Accept packets from all machine interfaces. | ||
6320 | |||
6321 | # TAG: udp_outgoing_address | ||
6322 | # udp_outgoing_address is used for UDP packets sent out to other | ||
6323 | # caches. | ||
6324 | # | ||
6325 | # The default behavior is to not bind to any specific address. | ||
6326 | # | ||
6327 | # Instead it will use the same socket as udp_incoming_address. | ||
6328 | # Only change this if you want to have UDP queries sent using another | ||
6329 | # address than where this Squid listens for UDP queries from other | ||
6330 | # caches. | ||
6331 | # | ||
6332 | # NOTE: udp_outgoing_address is used by the ICP, HTCP, and DNS | ||
6333 | # modules. Altering it will affect all of them in the same manner. | ||
6334 | # | ||
6335 | # see also; udp_incoming_address | ||
6336 | # | ||
6337 | # NOTE, udp_incoming_address and udp_outgoing_address can not | ||
6338 | # have the same value since they both use the same port. | ||
6339 | #Default: | ||
6340 | # Use udp_incoming_address or an address selected by the operating system. | ||
6341 | |||
6342 | # TAG: icp_hit_stale on|off | ||
6343 | # If you want to return ICP_HIT for stale cache objects, set this | ||
6344 | # option to 'on'. If you have sibling relationships with caches | ||
6345 | # in other administrative domains, this should be 'off'. If you only | ||
6346 | # have sibling relationships with caches under your control, | ||
6347 | # it is probably okay to set this to 'on'. | ||
6348 | # If set to 'on', your siblings should use the option "allow-miss" | ||
6349 | # on their cache_peer lines for connecting to you. | ||
6350 | #Default: | ||
6351 | # icp_hit_stale off | ||
6352 | |||
6353 | # TAG: minimum_direct_hops | ||
6354 | # If using the ICMP pinging stuff, do direct fetches for sites | ||
6355 | # which are no more than this many hops away. | ||
6356 | #Default: | ||
6357 | # minimum_direct_hops 4 | ||
6358 | |||
6359 | # TAG: minimum_direct_rtt (msec) | ||
6360 | # If using the ICMP pinging stuff, do direct fetches for sites | ||
6361 | # which are no more than this many rtt milliseconds away. | ||
6362 | #Default: | ||
6363 | # minimum_direct_rtt 400 | ||
6364 | |||
6365 | # TAG: netdb_low | ||
6366 | # The low water mark for the ICMP measurement database. | ||
6367 | # | ||
6368 | # Note: high watermark controlled by netdb_high directive. | ||
6369 | # | ||
6370 | # These watermarks are counts, not percents. The defaults are | ||
6371 | # (low) 900 and (high) 1000. When the high water mark is | ||
6372 | # reached, database entries will be deleted until the low | ||
6373 | # mark is reached. | ||
6374 | #Default: | ||
6375 | # netdb_low 900 | ||
6376 | |||
6377 | # TAG: netdb_high | ||
6378 | # The high water mark for the ICMP measurement database. | ||
6379 | # | ||
6380 | # Note: low watermark controlled by netdb_low directive. | ||
6381 | # | ||
6382 | # These watermarks are counts, not percents. The defaults are | ||
6383 | # (low) 900 and (high) 1000. When the high water mark is | ||
6384 | # reached, database entries will be deleted until the low | ||
6385 | # mark is reached. | ||
6386 | #Default: | ||
6387 | # netdb_high 1000 | ||
6388 | |||
6389 | # TAG: netdb_ping_period | ||
6390 | # The minimum period for measuring a site. There will be at | ||
6391 | # least this much delay between successive pings to the same | ||
6392 | # network. The default is five minutes. | ||
6393 | #Default: | ||
6394 | # netdb_ping_period 5 minutes | ||
6395 | |||
6396 | # TAG: query_icmp on|off | ||
6397 | # If you want to ask your peers to include ICMP data in their ICP | ||
6398 | # replies, enable this option. | ||
6399 | # | ||
6400 | # If your peer has configured Squid (during compilation) with | ||
6401 | # '--enable-icmp' that peer will send ICMP pings to origin server | ||
6402 | # sites of the URLs it receives. If you enable this option the | ||
6403 | # ICP replies from that peer will include the ICMP data (if available). | ||
6404 | # Then, when choosing a parent cache, Squid will choose the parent with | ||
6405 | # the minimal RTT to the origin server. When this happens, the | ||
6406 | # hierarchy field of the access.log will be | ||
6407 | # "CLOSEST_PARENT_MISS". This option is off by default. | ||
6408 | #Default: | ||
6409 | # query_icmp off | ||
6410 | |||
6411 | # TAG: test_reachability on|off | ||
6412 | # When this is 'on', ICP MISS replies will be ICP_MISS_NOFETCH | ||
6413 | # instead of ICP_MISS if the target host is NOT in the ICMP | ||
6414 | # database, or has a zero RTT. | ||
6415 | #Default: | ||
6416 | # test_reachability off | ||
6417 | |||
6418 | # TAG: icp_query_timeout (msec) | ||
6419 | # Normally Squid will automatically determine an optimal ICP | ||
6420 | # query timeout value based on the round-trip-time of recent ICP | ||
6421 | # queries. If you want to override the value determined by | ||
6422 | # Squid, set this 'icp_query_timeout' to a non-zero value. This | ||
6423 | # value is specified in MILLISECONDS, so, to use a 2-second | ||
6424 | # timeout (the old default), you would write: | ||
6425 | # | ||
6426 | # icp_query_timeout 2000 | ||
6427 | #Default: | ||
6428 | # Dynamic detection. | ||
6429 | |||
6430 | # TAG: maximum_icp_query_timeout (msec) | ||
6431 | # Normally the ICP query timeout is determined dynamically. But | ||
6432 | # sometimes it can lead to very large values (say 5 seconds). | ||
6433 | # Use this option to put an upper limit on the dynamic timeout | ||
6434 | # value. Do NOT use this option to always use a fixed (instead | ||
6435 | # of a dynamic) timeout value. To set a fixed timeout see the | ||
6436 | # 'icp_query_timeout' directive. | ||
6437 | #Default: | ||
6438 | # maximum_icp_query_timeout 2000 | ||
6439 | |||
6440 | # TAG: minimum_icp_query_timeout (msec) | ||
6441 | # Normally the ICP query timeout is determined dynamically. But | ||
6442 | # sometimes it can lead to very small timeouts, even lower than | ||
6443 | # the normal latency variance on your link due to traffic. | ||
6444 | # Use this option to put an lower limit on the dynamic timeout | ||
6445 | # value. Do NOT use this option to always use a fixed (instead | ||
6446 | # of a dynamic) timeout value. To set a fixed timeout see the | ||
6447 | # 'icp_query_timeout' directive. | ||
6448 | #Default: | ||
6449 | # minimum_icp_query_timeout 5 | ||
6450 | |||
6451 | # TAG: background_ping_rate time-units | ||
6452 | # Controls how often the ICP pings are sent to siblings that | ||
6453 | # have background-ping set. | ||
6454 | #Default: | ||
6455 | # background_ping_rate 10 seconds | ||
6456 | |||
6457 | # MULTICAST ICP OPTIONS | ||
6458 | # ----------------------------------------------------------------------------- | ||
6459 | |||
6460 | # TAG: mcast_groups | ||
6461 | # This tag specifies a list of multicast groups which your server | ||
6462 | # should join to receive multicasted ICP queries. | ||
6463 | # | ||
6464 | # NOTE! Be very careful what you put here! Be sure you | ||
6465 | # understand the difference between an ICP _query_ and an ICP | ||
6466 | # _reply_. This option is to be set only if you want to RECEIVE | ||
6467 | # multicast queries. Do NOT set this option to SEND multicast | ||
6468 | # ICP (use cache_peer for that). ICP replies are always sent via | ||
6469 | # unicast, so this option does not affect whether or not you will | ||
6470 | # receive replies from multicast group members. | ||
6471 | # | ||
6472 | # You must be very careful to NOT use a multicast address which | ||
6473 | # is already in use by another group of caches. | ||
6474 | # | ||
6475 | # If you are unsure about multicast, please read the Multicast | ||
6476 | # chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/). | ||
6477 | # | ||
6478 | # Usage: mcast_groups 239.128.16.128 224.0.1.20 | ||
6479 | # | ||
6480 | # By default, Squid doesn't listen on any multicast groups. | ||
6481 | #Default: | ||
6482 | # none | ||
6483 | |||
6484 | # TAG: mcast_miss_addr | ||
6485 | # Note: This option is only available if Squid is rebuilt with the | ||
6486 | # -DMULTICAST_MISS_STREAM define | ||
6487 | # | ||
6488 | # If you enable this option, every "cache miss" URL will | ||
6489 | # be sent out on the specified multicast address. | ||
6490 | # | ||
6491 | # Do not enable this option unless you are are absolutely | ||
6492 | # certain you understand what you are doing. | ||
6493 | #Default: | ||
6494 | # disabled. | ||
6495 | |||
6496 | # TAG: mcast_miss_ttl | ||
6497 | # Note: This option is only available if Squid is rebuilt with the | ||
6498 | # -DMULTICAST_MISS_STREAM define | ||
6499 | # | ||
6500 | # This is the time-to-live value for packets multicasted | ||
6501 | # when multicasting off cache miss URLs is enabled. By | ||
6502 | # default this is set to 'site scope', i.e. 16. | ||
6503 | #Default: | ||
6504 | # mcast_miss_ttl 16 | ||
6505 | |||
6506 | # TAG: mcast_miss_port | ||
6507 | # Note: This option is only available if Squid is rebuilt with the | ||
6508 | # -DMULTICAST_MISS_STREAM define | ||
6509 | # | ||
6510 | # This is the port number to be used in conjunction with | ||
6511 | # 'mcast_miss_addr'. | ||
6512 | #Default: | ||
6513 | # mcast_miss_port 3135 | ||
6514 | |||
6515 | # TAG: mcast_miss_encode_key | ||
6516 | # Note: This option is only available if Squid is rebuilt with the | ||
6517 | # -DMULTICAST_MISS_STREAM define | ||
6518 | # | ||
6519 | # The URLs that are sent in the multicast miss stream are | ||
6520 | # encrypted. This is the encryption key. | ||
6521 | #Default: | ||
6522 | # mcast_miss_encode_key XXXXXXXXXXXXXXXX | ||
6523 | |||
6524 | # TAG: mcast_icp_query_timeout (msec) | ||
6525 | # For multicast peers, Squid regularly sends out ICP "probes" to | ||
6526 | # count how many other peers are listening on the given multicast | ||
6527 | # address. This value specifies how long Squid should wait to | ||
6528 | # count all the replies. The default is 2000 msec, or 2 | ||
6529 | # seconds. | ||
6530 | #Default: | ||
6531 | # mcast_icp_query_timeout 2000 | ||
6532 | |||
6533 | # INTERNAL ICON OPTIONS | ||
6534 | # ----------------------------------------------------------------------------- | ||
6535 | |||
6536 | # TAG: icon_directory | ||
6537 | # Where the icons are stored. These are normally kept in | ||
6538 | # /usr/share/squid/icons | ||
6539 | #Default: | ||
6540 | # icon_directory /usr/share/squid/icons | ||
6541 | |||
6542 | # TAG: global_internal_static | ||
6543 | # This directive controls is Squid should intercept all requests for | ||
6544 | # /squid-internal-static/ no matter which host the URL is requesting | ||
6545 | # (default on setting), or if nothing special should be done for | ||
6546 | # such URLs (off setting). The purpose of this directive is to make | ||
6547 | # icons etc work better in complex cache hierarchies where it may | ||
6548 | # not always be possible for all corners in the cache mesh to reach | ||
6549 | # the server generating a directory listing. | ||
6550 | #Default: | ||
6551 | # global_internal_static on | ||
6552 | |||
6553 | # TAG: short_icon_urls | ||
6554 | # If this is enabled Squid will use short URLs for icons. | ||
6555 | # If disabled it will revert to the old behavior of including | ||
6556 | # it's own name and port in the URL. | ||
6557 | # | ||
6558 | # If you run a complex cache hierarchy with a mix of Squid and | ||
6559 | # other proxies you may need to disable this directive. | ||
6560 | #Default: | ||
6561 | # short_icon_urls on | ||
6562 | |||
6563 | # ERROR PAGE OPTIONS | ||
6564 | # ----------------------------------------------------------------------------- | ||
6565 | |||
6566 | # TAG: error_directory | ||
6567 | # If you wish to create your own versions of the default | ||
6568 | # error files to customize them to suit your company copy | ||
6569 | # the error/template files to another directory and point | ||
6570 | # this tag at them. | ||
6571 | # | ||
6572 | # WARNING: This option will disable multi-language support | ||
6573 | # on error pages if used. | ||
6574 | # | ||
6575 | # The squid developers are interested in making squid available in | ||
6576 | # a wide variety of languages. If you are making translations for a | ||
6577 | # language that Squid does not currently provide please consider | ||
6578 | # contributing your translation back to the project. | ||
6579 | # http://wiki.squid-cache.org/Translations | ||
6580 | # | ||
6581 | # The squid developers working on translations are happy to supply drop-in | ||
6582 | # translated error files in exchange for any new language contributions. | ||
6583 | #Default: | ||
6584 | # Send error pages in the clients preferred language | ||
6585 | |||
6586 | # TAG: error_default_language | ||
6587 | # Set the default language which squid will send error pages in | ||
6588 | # if no existing translation matches the clients language | ||
6589 | # preferences. | ||
6590 | # | ||
6591 | # If unset (default) generic English will be used. | ||
6592 | # | ||
6593 | # The squid developers are interested in making squid available in | ||
6594 | # a wide variety of languages. If you are interested in making | ||
6595 | # translations for any language see the squid wiki for details. | ||
6596 | # http://wiki.squid-cache.org/Translations | ||
6597 | #Default: | ||
6598 | # Generate English language pages. | ||
6599 | |||
6600 | # TAG: error_log_languages | ||
6601 | # Log to cache.log what languages users are attempting to | ||
6602 | # auto-negotiate for translations. | ||
6603 | # | ||
6604 | # Successful negotiations are not logged. Only failures | ||
6605 | # have meaning to indicate that Squid may need an upgrade | ||
6606 | # of its error page translations. | ||
6607 | #Default: | ||
6608 | # error_log_languages on | ||
6609 | |||
6610 | # TAG: err_page_stylesheet | ||
6611 | # CSS Stylesheet to pattern the display of Squid default error pages. | ||
6612 | # | ||
6613 | # For information on CSS see http://www.w3.org/Style/CSS/ | ||
6614 | #Default: | ||
6615 | # err_page_stylesheet /etc/squid/errorpage.css | ||
6616 | |||
6617 | # TAG: err_html_text | ||
6618 | # HTML text to include in error messages. Make this a "mailto" | ||
6619 | # URL to your admin address, or maybe just a link to your | ||
6620 | # organizations Web page. | ||
6621 | # | ||
6622 | # To include this in your error messages, you must rewrite | ||
6623 | # the error template files (found in the "errors" directory). | ||
6624 | # Wherever you want the 'err_html_text' line to appear, | ||
6625 | # insert a %L tag in the error template file. | ||
6626 | #Default: | ||
6627 | # none | ||
6628 | |||
6629 | # TAG: email_err_data on|off | ||
6630 | # If enabled, information about the occurred error will be | ||
6631 | # included in the mailto links of the ERR pages (if %W is set) | ||
6632 | # so that the email body contains the data. | ||
6633 | # Syntax is <A HREF="mailto:%w%W">%w</A> | ||
6634 | #Default: | ||
6635 | # email_err_data on | ||
6636 | |||
6637 | # TAG: deny_info | ||
6638 | # Usage: deny_info err_page_name acl | ||
6639 | # or deny_info http://... acl | ||
6640 | # or deny_info TCP_RESET acl | ||
6641 | # | ||
6642 | # This can be used to return a ERR_ page for requests which | ||
6643 | # do not pass the 'http_access' rules. Squid remembers the last | ||
6644 | # acl it evaluated in http_access, and if a 'deny_info' line exists | ||
6645 | # for that ACL Squid returns a corresponding error page. | ||
6646 | # | ||
6647 | # The acl is typically the last acl on the http_access deny line which | ||
6648 | # denied access. The exceptions to this rule are: | ||
6649 | # - When Squid needs to request authentication credentials. It's then | ||
6650 | # the first authentication related acl encountered | ||
6651 | # - When none of the http_access lines matches. It's then the last | ||
6652 | # acl processed on the last http_access line. | ||
6653 | # - When the decision to deny access was made by an adaptation service, | ||
6654 | # the acl name is the corresponding eCAP or ICAP service_name. | ||
6655 | # | ||
6656 | # NP: If providing your own custom error pages with error_directory | ||
6657 | # you may also specify them by your custom file name: | ||
6658 | # Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys | ||
6659 | # | ||
6660 | # By defaut Squid will send "403 Forbidden". A different 4xx or 5xx | ||
6661 | # may be specified by prefixing the file name with the code and a colon. | ||
6662 | # e.g. 404:ERR_CUSTOM_ACCESS_DENIED | ||
6663 | # | ||
6664 | # Alternatively you can tell Squid to reset the TCP connection | ||
6665 | # by specifying TCP_RESET. | ||
6666 | # | ||
6667 | # Or you can specify an error URL or URL pattern. The browsers will | ||
6668 | # get redirected to the specified URL after formatting tags have | ||
6669 | # been replaced. Redirect will be done with 302 or 307 according to | ||
6670 | # HTTP/1.1 specs. A different 3xx code may be specified by prefixing | ||
6671 | # the URL. e.g. 303:http://example.com/ | ||
6672 | # | ||
6673 | # URL FORMAT TAGS: | ||
6674 | # %a - username (if available. Password NOT included) | ||
6675 | # %B - FTP path URL | ||
6676 | # %e - Error number | ||
6677 | # %E - Error description | ||
6678 | # %h - Squid hostname | ||
6679 | # %H - Request domain name | ||
6680 | # %i - Client IP Address | ||
6681 | # %M - Request Method | ||
6682 | # %o - Message result from external ACL helper | ||
6683 | # %p - Request Port number | ||
6684 | # %P - Request Protocol name | ||
6685 | # %R - Request URL path | ||
6686 | # %T - Timestamp in RFC 1123 format | ||
6687 | # %U - Full canonical URL from client | ||
6688 | # (HTTPS URLs terminate with *) | ||
6689 | # %u - Full canonical URL from client | ||
6690 | # %w - Admin email from squid.conf | ||
6691 | # %x - Error name | ||
6692 | # %% - Literal percent (%) code | ||
6693 | # | ||
6694 | #Default: | ||
6695 | # none | ||
6696 | |||
6697 | # OPTIONS INFLUENCING REQUEST FORWARDING | ||
6698 | # ----------------------------------------------------------------------------- | ||
6699 | |||
6700 | # TAG: nonhierarchical_direct | ||
6701 | # By default, Squid will send any non-hierarchical requests | ||
6702 | # (not cacheable request type) direct to origin servers. | ||
6703 | # | ||
6704 | # When this is set to "off", Squid will prefer to send these | ||
6705 | # requests to parents. | ||
6706 | # | ||
6707 | # Note that in most configurations, by turning this off you will only | ||
6708 | # add latency to these request without any improvement in global hit | ||
6709 | # ratio. | ||
6710 | # | ||
6711 | # This option only sets a preference. If the parent is unavailable a | ||
6712 | # direct connection to the origin server may still be attempted. To | ||
6713 | # completely prevent direct connections use never_direct. | ||
6714 | #Default: | ||
6715 | # nonhierarchical_direct on | ||
6716 | |||
6717 | # TAG: prefer_direct | ||
6718 | # Normally Squid tries to use parents for most requests. If you for some | ||
6719 | # reason like it to first try going direct and only use a parent if | ||
6720 | # going direct fails set this to on. | ||
6721 | # | ||
6722 | # By combining nonhierarchical_direct off and prefer_direct on you | ||
6723 | # can set up Squid to use a parent as a backup path if going direct | ||
6724 | # fails. | ||
6725 | # | ||
6726 | # Note: If you want Squid to use parents for all requests see | ||
6727 | # the never_direct directive. prefer_direct only modifies how Squid | ||
6728 | # acts on cacheable requests. | ||
6729 | #Default: | ||
6730 | # prefer_direct off | ||
6731 | |||
6732 | # TAG: cache_miss_revalidate on|off | ||
6733 | # RFC 7232 defines a conditional request mechanism to prevent | ||
6734 | # response objects being unnecessarily transferred over the network. | ||
6735 | # If that mechanism is used by the client and a cache MISS occurs | ||
6736 | # it can prevent new cache entries being created. | ||
6737 | # | ||
6738 | # This option determines whether Squid on cache MISS will pass the | ||
6739 | # client revalidation request to the server or tries to fetch new | ||
6740 | # content for caching. It can be useful while the cache is mostly | ||
6741 | # empty to more quickly have the cache populated by generating | ||
6742 | # non-conditional GETs. | ||
6743 | # | ||
6744 | # When set to 'on' (default), Squid will pass all client If-* headers | ||
6745 | # to the server. This permits server responses without a cacheable | ||
6746 | # payload to be delivered and on MISS no new cache entry is created. | ||
6747 | # | ||
6748 | # When set to 'off' and if the request is cacheable, Squid will | ||
6749 | # remove the clients If-Modified-Since and If-None-Match headers from | ||
6750 | # the request sent to the server. This requests a 200 status response | ||
6751 | # from the server to create a new cache entry with. | ||
6752 | #Default: | ||
6753 | # cache_miss_revalidate on | ||
6754 | |||
6755 | # TAG: always_direct | ||
6756 | # Usage: always_direct allow|deny [!]aclname ... | ||
6757 | # | ||
6758 | # Here you can use ACL elements to specify requests which should | ||
6759 | # ALWAYS be forwarded by Squid to the origin servers without using | ||
6760 | # any peers. For example, to always directly forward requests for | ||
6761 | # local servers ignoring any parents or siblings you may have use | ||
6762 | # something like: | ||
6763 | # | ||
6764 | # acl local-servers dstdomain my.domain.net | ||
6765 | # always_direct allow local-servers | ||
6766 | # | ||
6767 | # To always forward FTP requests directly, use | ||
6768 | # | ||
6769 | # acl FTP proto FTP | ||
6770 | # always_direct allow FTP | ||
6771 | # | ||
6772 | # NOTE: There is a similar, but opposite option named | ||
6773 | # 'never_direct'. You need to be aware that "always_direct deny | ||
6774 | # foo" is NOT the same thing as "never_direct allow foo". You | ||
6775 | # may need to use a deny rule to exclude a more-specific case of | ||
6776 | # some other rule. Example: | ||
6777 | # | ||
6778 | # acl local-external dstdomain external.foo.net | ||
6779 | # acl local-servers dstdomain .foo.net | ||
6780 | # always_direct deny local-external | ||
6781 | # always_direct allow local-servers | ||
6782 | # | ||
6783 | # NOTE: If your goal is to make the client forward the request | ||
6784 | # directly to the origin server bypassing Squid then this needs | ||
6785 | # to be done in the client configuration. Squid configuration | ||
6786 | # can only tell Squid how Squid should fetch the object. | ||
6787 | # | ||
6788 | # NOTE: This directive is not related to caching. The replies | ||
6789 | # is cached as usual even if you use always_direct. To not cache | ||
6790 | # the replies see the 'cache' directive. | ||
6791 | # | ||
6792 | # This clause supports both fast and slow acl types. | ||
6793 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
6794 | #Default: | ||
6795 | # Prevent any cache_peer being used for this request. | ||
6796 | |||
6797 | # TAG: never_direct | ||
6798 | # Usage: never_direct allow|deny [!]aclname ... | ||
6799 | # | ||
6800 | # never_direct is the opposite of always_direct. Please read | ||
6801 | # the description for always_direct if you have not already. | ||
6802 | # | ||
6803 | # With 'never_direct' you can use ACL elements to specify | ||
6804 | # requests which should NEVER be forwarded directly to origin | ||
6805 | # servers. For example, to force the use of a proxy for all | ||
6806 | # requests, except those in your local domain use something like: | ||
6807 | # | ||
6808 | # acl local-servers dstdomain .foo.net | ||
6809 | # never_direct deny local-servers | ||
6810 | # never_direct allow all | ||
6811 | # | ||
6812 | # or if Squid is inside a firewall and there are local intranet | ||
6813 | # servers inside the firewall use something like: | ||
6814 | # | ||
6815 | # acl local-intranet dstdomain .foo.net | ||
6816 | # acl local-external dstdomain external.foo.net | ||
6817 | # always_direct deny local-external | ||
6818 | # always_direct allow local-intranet | ||
6819 | # never_direct allow all | ||
6820 | # | ||
6821 | # This clause supports both fast and slow acl types. | ||
6822 | # See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details. | ||
6823 | #Default: | ||
6824 | # Allow DNS results to be used for this request. | ||
6825 | |||
6826 | # ADVANCED NETWORKING OPTIONS | ||
6827 | # ----------------------------------------------------------------------------- | ||
6828 | |||
6829 | # TAG: incoming_udp_average | ||
6830 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6831 | # Are you crazy? Don't even think about adjusting these unless | ||
6832 | # you understand the algorithms in comm_select.c first! | ||
6833 | #Default: | ||
6834 | # incoming_udp_average 6 | ||
6835 | |||
6836 | # TAG: incoming_tcp_average | ||
6837 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6838 | # Are you crazy? Don't even think about adjusting these unless | ||
6839 | # you understand the algorithms in comm_select.c first! | ||
6840 | #Default: | ||
6841 | # incoming_tcp_average 4 | ||
6842 | |||
6843 | # TAG: incoming_dns_average | ||
6844 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6845 | # Are you crazy? Don't even think about adjusting these unless | ||
6846 | # you understand the algorithms in comm_select.c first! | ||
6847 | #Default: | ||
6848 | # incoming_dns_average 4 | ||
6849 | |||
6850 | # TAG: min_udp_poll_cnt | ||
6851 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6852 | # Are you crazy? Don't even think about adjusting these unless | ||
6853 | # you understand the algorithms in comm_select.c first! | ||
6854 | #Default: | ||
6855 | # min_udp_poll_cnt 8 | ||
6856 | |||
6857 | # TAG: min_dns_poll_cnt | ||
6858 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6859 | # Are you crazy? Don't even think about adjusting these unless | ||
6860 | # you understand the algorithms in comm_select.c first! | ||
6861 | #Default: | ||
6862 | # min_dns_poll_cnt 8 | ||
6863 | |||
6864 | # TAG: min_tcp_poll_cnt | ||
6865 | # Heavy voodoo here. I can't even believe you are reading this. | ||
6866 | # Are you crazy? Don't even think about adjusting these unless | ||
6867 | # you understand the algorithms in comm_select.c first! | ||
6868 | #Default: | ||
6869 | # min_tcp_poll_cnt 8 | ||
6870 | |||
6871 | # TAG: accept_filter | ||
6872 | # FreeBSD: | ||
6873 | # | ||
6874 | # The name of an accept(2) filter to install on Squid's | ||
6875 | # listen socket(s). This feature is perhaps specific to | ||
6876 | # FreeBSD and requires support in the kernel. | ||
6877 | # | ||
6878 | # The 'httpready' filter delays delivering new connections | ||
6879 | # to Squid until a full HTTP request has been received. | ||
6880 | # See the accf_http(9) man page for details. | ||
6881 | # | ||
6882 | # The 'dataready' filter delays delivering new connections | ||
6883 | # to Squid until there is some data to process. | ||
6884 | # See the accf_dataready(9) man page for details. | ||
6885 | # | ||
6886 | # Linux: | ||
6887 | # | ||
6888 | # The 'data' filter delays delivering of new connections | ||
6889 | # to Squid until there is some data to process by TCP_ACCEPT_DEFER. | ||
6890 | # You may optionally specify a number of seconds to wait by | ||
6891 | # 'data=N' where N is the number of seconds. Defaults to 30 | ||
6892 | # if not specified. See the tcp(7) man page for details. | ||
6893 | #EXAMPLE: | ||
6894 | ## FreeBSD | ||
6895 | #accept_filter httpready | ||
6896 | ## Linux | ||
6897 | #accept_filter data | ||
6898 | #Default: | ||
6899 | # none | ||
6900 | |||
6901 | # TAG: client_ip_max_connections | ||
6902 | # Set an absolute limit on the number of connections a single | ||
6903 | # client IP can use. Any more than this and Squid will begin to drop | ||
6904 | # new connections from the client until it closes some links. | ||
6905 | # | ||
6906 | # Note that this is a global limit. It affects all HTTP, HTCP, Gopher and FTP | ||
6907 | # connections from the client. For finer control use the ACL access controls. | ||
6908 | # | ||
6909 | # Requires client_db to be enabled (the default). | ||
6910 | # | ||
6911 | # WARNING: This may noticably slow down traffic received via external proxies | ||
6912 | # or NAT devices and cause them to rebound error messages back to their clients. | ||
6913 | #Default: | ||
6914 | # No limit. | ||
6915 | |||
6916 | # TAG: tcp_recv_bufsize (bytes) | ||
6917 | # Size of receive buffer to set for TCP sockets. Probably just | ||
6918 | # as easy to change your kernel's default. | ||
6919 | # Omit from squid.conf to use the default buffer size. | ||
6920 | #Default: | ||
6921 | # Use operating system TCP defaults. | ||
6922 | |||
6923 | # ICAP OPTIONS | ||
6924 | # ----------------------------------------------------------------------------- | ||
6925 | |||
6926 | # TAG: icap_enable on|off | ||
6927 | # If you want to enable the ICAP module support, set this to on. | ||
6928 | #Default: | ||
6929 | # icap_enable off | ||
6930 | |||
6931 | # TAG: icap_connect_timeout | ||
6932 | # This parameter specifies how long to wait for the TCP connect to | ||
6933 | # the requested ICAP server to complete before giving up and either | ||
6934 | # terminating the HTTP transaction or bypassing the failure. | ||
6935 | # | ||
6936 | # The default for optional services is peer_connect_timeout. | ||
6937 | # The default for essential services is connect_timeout. | ||
6938 | # If this option is explicitly set, its value applies to all services. | ||
6939 | #Default: | ||
6940 | # none | ||
6941 | |||
6942 | # TAG: icap_io_timeout time-units | ||
6943 | # This parameter specifies how long to wait for an I/O activity on | ||
6944 | # an established, active ICAP connection before giving up and | ||
6945 | # either terminating the HTTP transaction or bypassing the | ||
6946 | # failure. | ||
6947 | #Default: | ||
6948 | # Use read_timeout. | ||
6949 | |||
6950 | # TAG: icap_service_failure_limit limit [in memory-depth time-units] | ||
6951 | # The limit specifies the number of failures that Squid tolerates | ||
6952 | # when establishing a new TCP connection with an ICAP service. If | ||
6953 | # the number of failures exceeds the limit, the ICAP service is | ||
6954 | # not used for new ICAP requests until it is time to refresh its | ||
6955 | # OPTIONS. | ||
6956 | # | ||
6957 | # A negative value disables the limit. Without the limit, an ICAP | ||
6958 | # service will not be considered down due to connectivity failures | ||
6959 | # between ICAP OPTIONS requests. | ||
6960 | # | ||
6961 | # Squid forgets ICAP service failures older than the specified | ||
6962 | # value of memory-depth. The memory fading algorithm | ||
6963 | # is approximate because Squid does not remember individual | ||
6964 | # errors but groups them instead, splitting the option | ||
6965 | # value into ten time slots of equal length. | ||
6966 | # | ||
6967 | # When memory-depth is 0 and by default this option has no | ||
6968 | # effect on service failure expiration. | ||
6969 | # | ||
6970 | # Squid always forgets failures when updating service settings | ||
6971 | # using an ICAP OPTIONS transaction, regardless of this option | ||
6972 | # setting. | ||
6973 | # | ||
6974 | # For example, | ||
6975 | # # suspend service usage after 10 failures in 5 seconds: | ||
6976 | # icap_service_failure_limit 10 in 5 seconds | ||
6977 | #Default: | ||
6978 | # icap_service_failure_limit 10 | ||
6979 | |||
6980 | # TAG: icap_service_revival_delay | ||
6981 | # The delay specifies the number of seconds to wait after an ICAP | ||
6982 | # OPTIONS request failure before requesting the options again. The | ||
6983 | # failed ICAP service is considered "down" until fresh OPTIONS are | ||
6984 | # fetched. | ||
6985 | # | ||
6986 | # The actual delay cannot be smaller than the hardcoded minimum | ||
6987 | # delay of 30 seconds. | ||
6988 | #Default: | ||
6989 | # icap_service_revival_delay 180 | ||
6990 | |||
6991 | # TAG: icap_preview_enable on|off | ||
6992 | # The ICAP Preview feature allows the ICAP server to handle the | ||
6993 | # HTTP message by looking only at the beginning of the message body | ||
6994 | # or even without receiving the body at all. In some environments, | ||
6995 | # previews greatly speedup ICAP processing. | ||
6996 | # | ||
6997 | # During an ICAP OPTIONS transaction, the server may tell Squid what | ||
6998 | # HTTP messages should be previewed and how big the preview should be. | ||
6999 | # Squid will not use Preview if the server did not request one. | ||
7000 | # | ||
7001 | # To disable ICAP Preview for all ICAP services, regardless of | ||
7002 | # individual ICAP server OPTIONS responses, set this option to "off". | ||
7003 | #Example: | ||
7004 | #icap_preview_enable off | ||
7005 | #Default: | ||
7006 | # icap_preview_enable on | ||
7007 | |||
7008 | # TAG: icap_preview_size | ||
7009 | # The default size of preview data to be sent to the ICAP server. | ||
7010 | # This value might be overwritten on a per server basis by OPTIONS requests. | ||
7011 | #Default: | ||
7012 | # No preview sent. | ||
7013 | |||
7014 | # TAG: icap_206_enable on|off | ||
7015 | # 206 (Partial Content) responses is an ICAP extension that allows the | ||
7016 | # ICAP agents to optionally combine adapted and original HTTP message | ||
7017 | # content. The decision to combine is postponed until the end of the | ||
7018 | # ICAP response. Squid supports Partial Content extension by default. | ||
7019 | # | ||
7020 | # Activation of the Partial Content extension is negotiated with each | ||
7021 | # ICAP service during OPTIONS exchange. Most ICAP servers should handle | ||
7022 | # negotation correctly even if they do not support the extension, but | ||
7023 | # some might fail. To disable Partial Content support for all ICAP | ||
7024 | # services and to avoid any negotiation, set this option to "off". | ||
7025 | # | ||
7026 | # Example: | ||
7027 | # icap_206_enable off | ||
7028 | #Default: | ||
7029 | # icap_206_enable on | ||
7030 | |||
7031 | # TAG: icap_default_options_ttl | ||
7032 | # The default TTL value for ICAP OPTIONS responses that don't have | ||
7033 | # an Options-TTL header. | ||
7034 | #Default: | ||
7035 | # icap_default_options_ttl 60 | ||
7036 | |||
7037 | # TAG: icap_persistent_connections on|off | ||
7038 | # Whether or not Squid should use persistent connections to | ||
7039 | # an ICAP server. | ||
7040 | #Default: | ||
7041 | # icap_persistent_connections on | ||
7042 | |||
7043 | # TAG: adaptation_send_client_ip on|off | ||
7044 | # If enabled, Squid shares HTTP client IP information with adaptation | ||
7045 | # services. For ICAP, Squid adds the X-Client-IP header to ICAP requests. | ||
7046 | # For eCAP, Squid sets the libecap::metaClientIp transaction option. | ||
7047 | # | ||
7048 | # See also: adaptation_uses_indirect_client | ||
7049 | #Default: | ||
7050 | # adaptation_send_client_ip off | ||
7051 | |||
7052 | # TAG: adaptation_send_username on|off | ||
7053 | # This sends authenticated HTTP client username (if available) to | ||
7054 | # the adaptation service. | ||
7055 | # | ||
7056 | # For ICAP, the username value is encoded based on the | ||
7057 | # icap_client_username_encode option and is sent using the header | ||
7058 | # specified by the icap_client_username_header option. | ||
7059 | #Default: | ||
7060 | # adaptation_send_username off | ||
7061 | |||
7062 | # TAG: icap_client_username_header | ||
7063 | # ICAP request header name to use for adaptation_send_username. | ||
7064 | #Default: | ||
7065 | # icap_client_username_header X-Client-Username | ||
7066 | |||
7067 | # TAG: icap_client_username_encode on|off | ||
7068 | # Whether to base64 encode the authenticated client username. | ||
7069 | #Default: | ||
7070 | # icap_client_username_encode off | ||
7071 | |||
7072 | # TAG: icap_service | ||
7073 | # Defines a single ICAP service using the following format: | ||
7074 | # | ||
7075 | # icap_service id vectoring_point uri [option ...] | ||
7076 | # | ||
7077 | # id: ID | ||
7078 | # an opaque identifier or name which is used to direct traffic to | ||
7079 | # this specific service. Must be unique among all adaptation | ||
7080 | # services in squid.conf. | ||
7081 | # | ||
7082 | # vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache | ||
7083 | # This specifies at which point of transaction processing the | ||
7084 | # ICAP service should be activated. *_postcache vectoring points | ||
7085 | # are not yet supported. | ||
7086 | # | ||
7087 | # uri: icap://servername:port/servicepath | ||
7088 | # ICAP server and service location. | ||
7089 | # | ||
7090 | # ICAP does not allow a single service to handle both REQMOD and RESPMOD | ||
7091 | # transactions. Squid does not enforce that requirement. You can specify | ||
7092 | # services with the same service_url and different vectoring_points. You | ||
7093 | # can even specify multiple identical services as long as their | ||
7094 | # service_names differ. | ||
7095 | # | ||
7096 | # To activate a service, use the adaptation_access directive. To group | ||
7097 | # services, use adaptation_service_chain and adaptation_service_set. | ||
7098 | # | ||
7099 | # Service options are separated by white space. ICAP services support | ||
7100 | # the following name=value options: | ||
7101 | # | ||
7102 | # bypass=on|off|1|0 | ||
7103 | # If set to 'on' or '1', the ICAP service is treated as | ||
7104 | # optional. If the service cannot be reached or malfunctions, | ||
7105 | # Squid will try to ignore any errors and process the message as | ||
7106 | # if the service was not enabled. No all ICAP errors can be | ||
7107 | # bypassed. If set to 0, the ICAP service is treated as | ||
7108 | # essential and all ICAP errors will result in an error page | ||
7109 | # returned to the HTTP client. | ||
7110 | # | ||
7111 | # Bypass is off by default: services are treated as essential. | ||
7112 | # | ||
7113 | # routing=on|off|1|0 | ||
7114 | # If set to 'on' or '1', the ICAP service is allowed to | ||
7115 | # dynamically change the current message adaptation plan by | ||
7116 | # returning a chain of services to be used next. The services | ||
7117 | # are specified using the X-Next-Services ICAP response header | ||
7118 | # value, formatted as a comma-separated list of service names. | ||
7119 | # Each named service should be configured in squid.conf. Other | ||
7120 | # services are ignored. An empty X-Next-Services value results | ||
7121 | # in an empty plan which ends the current adaptation. | ||
7122 | # | ||
7123 | # Dynamic adaptation plan may cross or cover multiple supported | ||
7124 | # vectoring points in their natural processing order. | ||
7125 | # | ||
7126 | # Routing is not allowed by default: the ICAP X-Next-Services | ||
7127 | # response header is ignored. | ||
7128 | # | ||
7129 | # ipv6=on|off | ||
7130 | # Only has effect on split-stack systems. The default on those systems | ||
7131 | # is to use IPv4-only connections. When set to 'on' this option will | ||
7132 | # make Squid use IPv6-only connections to contact this ICAP service. | ||
7133 | # | ||
7134 | # on-overload=block|bypass|wait|force | ||
7135 | # If the service Max-Connections limit has been reached, do | ||
7136 | # one of the following for each new ICAP transaction: | ||
7137 | # * block: send an HTTP error response to the client | ||
7138 | # * bypass: ignore the "over-connected" ICAP service | ||
7139 | # * wait: wait (in a FIFO queue) for an ICAP connection slot | ||
7140 | # * force: proceed, ignoring the Max-Connections limit | ||
7141 | # | ||
7142 | # In SMP mode with N workers, each worker assumes the service | ||
7143 | # connection limit is Max-Connections/N, even though not all | ||
7144 | # workers may use a given service. | ||
7145 | # | ||
7146 | # The default value is "bypass" if service is bypassable, | ||
7147 | # otherwise it is set to "wait". | ||
7148 | # | ||
7149 | # | ||
7150 | # max-conn=number | ||
7151 | # Use the given number as the Max-Connections limit, regardless | ||
7152 | # of the Max-Connections value given by the service, if any. | ||
7153 | # | ||
7154 | # Older icap_service format without optional named parameters is | ||
7155 | # deprecated but supported for backward compatibility. | ||
7156 | # | ||
7157 | #Example: | ||
7158 | #icap_service svcBlocker reqmod_precache icap://icap1.mydomain.net:1344/reqmod bypass=0 | ||
7159 | #icap_service svcLogger reqmod_precache icap://icap2.mydomain.net:1344/respmod routing=on | ||
7160 | #Default: | ||
7161 | # none | ||
7162 | |||
7163 | # TAG: icap_class | ||
7164 | # This deprecated option was documented to define an ICAP service | ||
7165 | # chain, even though it actually defined a set of similar, redundant | ||
7166 | # services, and the chains were not supported. | ||
7167 | # | ||
7168 | # To define a set of redundant services, please use the | ||
7169 | # adaptation_service_set directive. For service chains, use | ||
7170 | # adaptation_service_chain. | ||
7171 | #Default: | ||
7172 | # none | ||
7173 | |||
7174 | # TAG: icap_access | ||
7175 | # This option is deprecated. Please use adaptation_access, which | ||
7176 | # has the same ICAP functionality, but comes with better | ||
7177 | # documentation, and eCAP support. | ||
7178 | #Default: | ||
7179 | # none | ||
7180 | |||
7181 | # eCAP OPTIONS | ||
7182 | # ----------------------------------------------------------------------------- | ||
7183 | |||
7184 | # TAG: ecap_enable on|off | ||
7185 | # Controls whether eCAP support is enabled. | ||
7186 | #Default: | ||
7187 | # ecap_enable off | ||
7188 | |||
7189 | # TAG: ecap_service | ||
7190 | # Defines a single eCAP service | ||
7191 | # | ||
7192 | # ecap_service id vectoring_point uri [option ...] | ||
7193 | # | ||
7194 | # id: ID | ||
7195 | # an opaque identifier or name which is used to direct traffic to | ||
7196 | # this specific service. Must be unique among all adaptation | ||
7197 | # services in squid.conf. | ||
7198 | # | ||
7199 | # vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache | ||
7200 | # This specifies at which point of transaction processing the | ||
7201 | # eCAP service should be activated. *_postcache vectoring points | ||
7202 | # are not yet supported. | ||
7203 | # | ||
7204 | # uri: ecap://vendor/service_name?custom&cgi=style¶meters=optional | ||
7205 | # Squid uses the eCAP service URI to match this configuration | ||
7206 | # line with one of the dynamically loaded services. Each loaded | ||
7207 | # eCAP service must have a unique URI. Obtain the right URI from | ||
7208 | # the service provider. | ||
7209 | # | ||
7210 | # To activate a service, use the adaptation_access directive. To group | ||
7211 | # services, use adaptation_service_chain and adaptation_service_set. | ||
7212 | # | ||
7213 | # Service options are separated by white space. eCAP services support | ||
7214 | # the following name=value options: | ||
7215 | # | ||
7216 | # bypass=on|off|1|0 | ||
7217 | # If set to 'on' or '1', the eCAP service is treated as optional. | ||
7218 | # If the service cannot be reached or malfunctions, Squid will try | ||
7219 | # to ignore any errors and process the message as if the service | ||
7220 | # was not enabled. No all eCAP errors can be bypassed. | ||
7221 | # If set to 'off' or '0', the eCAP service is treated as essential | ||
7222 | # and all eCAP errors will result in an error page returned to the | ||
7223 | # HTTP client. | ||
7224 | # | ||
7225 | # Bypass is off by default: services are treated as essential. | ||
7226 | # | ||
7227 | # routing=on|off|1|0 | ||
7228 | # If set to 'on' or '1', the eCAP service is allowed to | ||
7229 | # dynamically change the current message adaptation plan by | ||
7230 | # returning a chain of services to be used next. | ||
7231 | # | ||
7232 | # Dynamic adaptation plan may cross or cover multiple supported | ||
7233 | # vectoring points in their natural processing order. | ||
7234 | # | ||
7235 | # Routing is not allowed by default. | ||
7236 | # | ||
7237 | # Older ecap_service format without optional named parameters is | ||
7238 | # deprecated but supported for backward compatibility. | ||
7239 | # | ||
7240 | # | ||
7241 | #Example: | ||
7242 | #ecap_service s1 reqmod_precache ecap://filters.R.us/leakDetector?on_error=block bypass=off | ||
7243 | #ecap_service s2 respmod_precache ecap://filters.R.us/virusFilter config=/etc/vf.cfg bypass=on | ||
7244 | #Default: | ||
7245 | # none | ||
7246 | |||
7247 | # TAG: loadable_modules | ||
7248 | # Instructs Squid to load the specified dynamic module(s) or activate | ||
7249 | # preloaded module(s). | ||
7250 | #Example: | ||
7251 | #loadable_modules /usr/lib/MinimalAdapter.so | ||
7252 | #Default: | ||
7253 | # none | ||
7254 | |||
7255 | # MESSAGE ADAPTATION OPTIONS | ||
7256 | # ----------------------------------------------------------------------------- | ||
7257 | |||
7258 | # TAG: adaptation_service_set | ||
7259 | # | ||
7260 | # Configures an ordered set of similar, redundant services. This is | ||
7261 | # useful when hot standby or backup adaptation servers are available. | ||
7262 | # | ||
7263 | # adaptation_service_set set_name service_name1 service_name2 ... | ||
7264 | # | ||
7265 | # The named services are used in the set declaration order. The first | ||
7266 | # applicable adaptation service from the set is used first. The next | ||
7267 | # applicable service is tried if and only if the transaction with the | ||
7268 | # previous service fails and the message waiting to be adapted is still | ||
7269 | # intact. | ||
7270 | # | ||
7271 | # When adaptation starts, broken services are ignored as if they were | ||
7272 | # not a part of the set. A broken service is a down optional service. | ||
7273 | # | ||
7274 | # The services in a set must be attached to the same vectoring point | ||
7275 | # (e.g., pre-cache) and use the same adaptation method (e.g., REQMOD). | ||
7276 | # | ||
7277 | # If all services in a set are optional then adaptation failures are | ||
7278 | # bypassable. If all services in the set are essential, then a | ||
7279 | # transaction failure with one service may still be retried using | ||
7280 | # another service from the set, but when all services fail, the master | ||
7281 | # transaction fails as well. | ||
7282 | # | ||
7283 | # A set may contain a mix of optional and essential services, but that | ||
7284 | # is likely to lead to surprising results because broken services become | ||
7285 | # ignored (see above), making previously bypassable failures fatal. | ||
7286 | # Technically, it is the bypassability of the last failed service that | ||
7287 | # matters. | ||
7288 | # | ||
7289 | # See also: adaptation_access adaptation_service_chain | ||
7290 | # | ||
7291 | #Example: | ||
7292 | #adaptation_service_set svcBlocker urlFilterPrimary urlFilterBackup | ||
7293 | #adaptation service_set svcLogger loggerLocal loggerRemote | ||
7294 | #Default: | ||
7295 | # none | ||
7296 | |||
7297 | # TAG: adaptation_service_chain | ||
7298 | # | ||
7299 | # Configures a list of complementary services that will be applied | ||
7300 | # one-by-one, forming an adaptation chain or pipeline. This is useful | ||
7301 | # when Squid must perform different adaptations on the same message. | ||
7302 | # | ||
7303 | # adaptation_service_chain chain_name service_name1 svc_name2 ... | ||
7304 | # | ||
7305 | # The named services are used in the chain declaration order. The first | ||
7306 | # applicable adaptation service from the chain is used first. The next | ||
7307 | # applicable service is applied to the successful adaptation results of | ||
7308 | # the previous service in the chain. | ||
7309 | # | ||
7310 | # When adaptation starts, broken services are ignored as if they were | ||
7311 | # not a part of the chain. A broken service is a down optional service. | ||
7312 | # | ||
7313 | # Request satisfaction terminates the adaptation chain because Squid | ||
7314 | # does not currently allow declaration of RESPMOD services at the | ||
7315 | # "reqmod_precache" vectoring point (see icap_service or ecap_service). | ||
7316 | # | ||
7317 | # The services in a chain must be attached to the same vectoring point | ||
7318 | # (e.g., pre-cache) and use the same adaptation method (e.g., REQMOD). | ||
7319 | # | ||
7320 | # A chain may contain a mix of optional and essential services. If an | ||
7321 | # essential adaptation fails (or the failure cannot be bypassed for | ||
7322 | # other reasons), the master transaction fails. Otherwise, the failure | ||
7323 | # is bypassed as if the failed adaptation service was not in the chain. | ||
7324 | # | ||
7325 | # See also: adaptation_access adaptation_service_set | ||
7326 | # | ||
7327 | #Example: | ||
7328 | #adaptation_service_chain svcRequest requestLogger urlFilter leakDetector | ||
7329 | #Default: | ||
7330 | # none | ||
7331 | |||
7332 | # TAG: adaptation_access | ||
7333 | # Sends an HTTP transaction to an ICAP or eCAP adaptation service. | ||
7334 | # | ||
7335 | # adaptation_access service_name allow|deny [!]aclname... | ||
7336 | # adaptation_access set_name allow|deny [!]aclname... | ||
7337 | # | ||
7338 | # At each supported vectoring point, the adaptation_access | ||
7339 | # statements are processed in the order they appear in this | ||
7340 | # configuration file. Statements pointing to the following services | ||
7341 | # are ignored (i.e., skipped without checking their ACL): | ||
7342 | # | ||
7343 | # - services serving different vectoring points | ||
7344 | # - "broken-but-bypassable" services | ||
7345 | # - "up" services configured to ignore such transactions | ||
7346 | # (e.g., based on the ICAP Transfer-Ignore header). | ||
7347 | # | ||
7348 | # When a set_name is used, all services in the set are checked | ||
7349 | # using the same rules, to find the first applicable one. See | ||
7350 | # adaptation_service_set for details. | ||
7351 | # | ||
7352 | # If an access list is checked and there is a match, the | ||
7353 | # processing stops: For an "allow" rule, the corresponding | ||
7354 | # adaptation service is used for the transaction. For a "deny" | ||
7355 | # rule, no adaptation service is activated. | ||
7356 | # | ||
7357 | # It is currently not possible to apply more than one adaptation | ||
7358 | # service at the same vectoring point to the same HTTP transaction. | ||
7359 | # | ||
7360 | # See also: icap_service and ecap_service | ||
7361 | # | ||
7362 | #Example: | ||
7363 | #adaptation_access service_1 allow all | ||
7364 | #Default: | ||
7365 | # Allow, unless rules exist in squid.conf. | ||
7366 | |||
7367 | # TAG: adaptation_service_iteration_limit | ||
7368 | # Limits the number of iterations allowed when applying adaptation | ||
7369 | # services to a message. If your longest adaptation set or chain | ||
7370 | # may have more than 16 services, increase the limit beyond its | ||
7371 | # default value of 16. If detecting infinite iteration loops sooner | ||
7372 | # is critical, make the iteration limit match the actual number | ||
7373 | # of services in your longest adaptation set or chain. | ||
7374 | # | ||
7375 | # Infinite adaptation loops are most likely with routing services. | ||
7376 | # | ||
7377 | # See also: icap_service routing=1 | ||
7378 | #Default: | ||
7379 | # adaptation_service_iteration_limit 16 | ||
7380 | |||
7381 | # TAG: adaptation_masterx_shared_names | ||
7382 | # For each master transaction (i.e., the HTTP request and response | ||
7383 | # sequence, including all related ICAP and eCAP exchanges), Squid | ||
7384 | # maintains a table of metadata. The table entries are (name, value) | ||
7385 | # pairs shared among eCAP and ICAP exchanges. The table is destroyed | ||
7386 | # with the master transaction. | ||
7387 | # | ||
7388 | # This option specifies the table entry names that Squid must accept | ||
7389 | # from and forward to the adaptation transactions. | ||
7390 | # | ||
7391 | # An ICAP REQMOD or RESPMOD transaction may set an entry in the | ||
7392 | # shared table by returning an ICAP header field with a name | ||
7393 | # specified in adaptation_masterx_shared_names. | ||
7394 | # | ||
7395 | # An eCAP REQMOD or RESPMOD transaction may set an entry in the | ||
7396 | # shared table by implementing the libecap::visitEachOption() API | ||
7397 | # to provide an option with a name specified in | ||
7398 | # adaptation_masterx_shared_names. | ||
7399 | # | ||
7400 | # Squid will store and forward the set entry to subsequent adaptation | ||
7401 | # transactions within the same master transaction scope. | ||
7402 | # | ||
7403 | # Only one shared entry name is supported at this time. | ||
7404 | # | ||
7405 | #Example: | ||
7406 | ## share authentication information among ICAP services | ||
7407 | #adaptation_masterx_shared_names X-Subscriber-ID | ||
7408 | #Default: | ||
7409 | # none | ||
7410 | |||
7411 | # TAG: adaptation_meta | ||
7412 | # This option allows Squid administrator to add custom ICAP request | ||
7413 | # headers or eCAP options to Squid ICAP requests or eCAP transactions. | ||
7414 | # Use it to pass custom authentication tokens and other | ||
7415 | # transaction-state related meta information to an ICAP/eCAP service. | ||
7416 | # | ||
7417 | # The addition of a meta header is ACL-driven: | ||
7418 | # adaptation_meta name value [!]aclname ... | ||
7419 | # | ||
7420 | # Processing for a given header name stops after the first ACL list match. | ||
7421 | # Thus, it is impossible to add two headers with the same name. If no ACL | ||
7422 | # lists match for a given header name, no such header is added. For | ||
7423 | # example: | ||
7424 | # | ||
7425 | # # do not debug transactions except for those that need debugging | ||
7426 | # adaptation_meta X-Debug 1 needs_debugging | ||
7427 | # | ||
7428 | # # log all transactions except for those that must remain secret | ||
7429 | # adaptation_meta X-Log 1 !keep_secret | ||
7430 | # | ||
7431 | # # mark transactions from users in the "G 1" group | ||
7432 | # adaptation_meta X-Authenticated-Groups "G 1" authed_as_G1 | ||
7433 | # | ||
7434 | # The "value" parameter may be a regular squid.conf token or a "double | ||
7435 | # quoted string". Within the quoted string, use backslash (\) to escape | ||
7436 | # any character, which is currently only useful for escaping backslashes | ||
7437 | # and double quotes. For example, | ||
7438 | # "this string has one backslash (\\) and two \"quotes\"" | ||
7439 | # | ||
7440 | # Used adaptation_meta header values may be logged via %note | ||
7441 | # logformat code. If multiple adaptation_meta headers with the same name | ||
7442 | # are used during master transaction lifetime, the header values are | ||
7443 | # logged in the order they were used and duplicate values are ignored | ||
7444 | # (only the first repeated value will be logged). | ||
7445 | #Default: | ||
7446 | # none | ||
7447 | |||
7448 | # TAG: icap_retry | ||
7449 | # This ACL determines which retriable ICAP transactions are | ||
7450 | # retried. Transactions that received a complete ICAP response | ||
7451 | # and did not have to consume or produce HTTP bodies to receive | ||
7452 | # that response are usually retriable. | ||
7453 | # | ||
7454 | # icap_retry allow|deny [!]aclname ... | ||
7455 | # | ||
7456 | # Squid automatically retries some ICAP I/O timeouts and errors | ||
7457 | # due to persistent connection race conditions. | ||
7458 | # | ||
7459 | # See also: icap_retry_limit | ||
7460 | #Default: | ||
7461 | # icap_retry deny all | ||
7462 | |||
7463 | # TAG: icap_retry_limit | ||
7464 | # Limits the number of retries allowed. | ||
7465 | # | ||
7466 | # Communication errors due to persistent connection race | ||
7467 | # conditions are unavoidable, automatically retried, and do not | ||
7468 | # count against this limit. | ||
7469 | # | ||
7470 | # See also: icap_retry | ||
7471 | #Default: | ||
7472 | # No retries are allowed. | ||
7473 | |||
7474 | # DNS OPTIONS | ||
7475 | # ----------------------------------------------------------------------------- | ||
7476 | |||
7477 | # TAG: check_hostnames | ||
7478 | # For security and stability reasons Squid can check | ||
7479 | # hostnames for Internet standard RFC compliance. If you want | ||
7480 | # Squid to perform these checks turn this directive on. | ||
7481 | #Default: | ||
7482 | # check_hostnames off | ||
7483 | |||
7484 | # TAG: allow_underscore | ||
7485 | # Underscore characters is not strictly allowed in Internet hostnames | ||
7486 | # but nevertheless used by many sites. Set this to off if you want | ||
7487 | # Squid to be strict about the standard. | ||
7488 | # This check is performed only when check_hostnames is set to on. | ||
7489 | #Default: | ||
7490 | # allow_underscore on | ||
7491 | |||
7492 | # TAG: dns_retransmit_interval | ||
7493 | # Initial retransmit interval for DNS queries. The interval is | ||
7494 | # doubled each time all configured DNS servers have been tried. | ||
7495 | #Default: | ||
7496 | # dns_retransmit_interval 5 seconds | ||
7497 | |||
7498 | # TAG: dns_timeout | ||
7499 | # DNS Query timeout. If no response is received to a DNS query | ||
7500 | # within this time all DNS servers for the queried domain | ||
7501 | # are assumed to be unavailable. | ||
7502 | #Default: | ||
7503 | # dns_timeout 30 seconds | ||
7504 | |||
7505 | # TAG: dns_packet_max | ||
7506 | # Maximum number of bytes packet size to advertise via EDNS. | ||
7507 | # Set to "none" to disable EDNS large packet support. | ||
7508 | # | ||
7509 | # For legacy reasons DNS UDP replies will default to 512 bytes which | ||
7510 | # is too small for many responses. EDNS provides a means for Squid to | ||
7511 | # negotiate receiving larger responses back immediately without having | ||
7512 | # to failover with repeat requests. Responses larger than this limit | ||
7513 | # will retain the old behaviour of failover to TCP DNS. | ||
7514 | # | ||
7515 | # Squid has no real fixed limit internally, but allowing packet sizes | ||
7516 | # over 1500 bytes requires network jumbogram support and is usually not | ||
7517 | # necessary. | ||
7518 | # | ||
7519 | # WARNING: The RFC also indicates that some older resolvers will reply | ||
7520 | # with failure of the whole request if the extension is added. Some | ||
7521 | # resolvers have already been identified which will reply with mangled | ||
7522 | # EDNS response on occasion. Usually in response to many-KB jumbogram | ||
7523 | # sizes being advertised by Squid. | ||
7524 | # Squid will currently treat these both as an unable-to-resolve domain | ||
7525 | # even if it would be resolvable without EDNS. | ||
7526 | #Default: | ||
7527 | # EDNS disabled | ||
7528 | |||
7529 | # TAG: dns_defnames on|off | ||
7530 | # Normally the RES_DEFNAMES resolver option is disabled | ||
7531 | # (see res_init(3)). This prevents caches in a hierarchy | ||
7532 | # from interpreting single-component hostnames locally. To allow | ||
7533 | # Squid to handle single-component names, enable this option. | ||
7534 | #Default: | ||
7535 | # Search for single-label domain names is disabled. | ||
7536 | |||
7537 | # TAG: dns_multicast_local on|off | ||
7538 | # When set to on, Squid sends multicast DNS lookups on the local | ||
7539 | # network for domains ending in .local and .arpa. | ||
7540 | # This enables local servers and devices to be contacted in an | ||
7541 | # ad-hoc or zero-configuration network environment. | ||
7542 | #Default: | ||
7543 | # Search for .local and .arpa names is disabled. | ||
7544 | |||
7545 | # TAG: dns_nameservers | ||
7546 | # Use this if you want to specify a list of DNS name servers | ||
7547 | # (IP addresses) to use instead of those given in your | ||
7548 | # /etc/resolv.conf file. | ||
7549 | # | ||
7550 | # On Windows platforms, if no value is specified here or in | ||
7551 | # the /etc/resolv.conf file, the list of DNS name servers are | ||
7552 | # taken from the Windows registry, both static and dynamic DHCP | ||
7553 | # configurations are supported. | ||
7554 | # | ||
7555 | # Example: dns_nameservers 10.0.0.1 192.172.0.4 | ||
7556 | #Default: | ||
7557 | # Use operating system definitions | ||
7558 | |||
7559 | # TAG: hosts_file | ||
7560 | # Location of the host-local IP name-address associations | ||
7561 | # database. Most Operating Systems have such a file on different | ||
7562 | # default locations: | ||
7563 | # - Un*X & Linux: /etc/hosts | ||
7564 | # - Windows NT/2000: %SystemRoot%\system32\drivers\etc\hosts | ||
7565 | # (%SystemRoot% value install default is c:\winnt) | ||
7566 | # - Windows XP/2003: %SystemRoot%\system32\drivers\etc\hosts | ||
7567 | # (%SystemRoot% value install default is c:\windows) | ||
7568 | # - Windows 9x/Me: %windir%\hosts | ||
7569 | # (%windir% value is usually c:\windows) | ||
7570 | # - Cygwin: /etc/hosts | ||
7571 | # | ||
7572 | # The file contains newline-separated definitions, in the | ||
7573 | # form ip_address_in_dotted_form name [name ...] names are | ||
7574 | # whitespace-separated. Lines beginning with an hash (#) | ||
7575 | # character are comments. | ||
7576 | # | ||
7577 | # The file is checked at startup and upon configuration. | ||
7578 | # If set to 'none', it won't be checked. | ||
7579 | # If append_domain is used, that domain will be added to | ||
7580 | # domain-local (i.e. not containing any dot character) host | ||
7581 | # definitions. | ||
7582 | #Default: | ||
7583 | # hosts_file /etc/hosts | ||
7584 | |||
7585 | # TAG: append_domain | ||
7586 | # Appends local domain name to hostnames without any dots in | ||
7587 | # them. append_domain must begin with a period. | ||
7588 | # | ||
7589 | # Be warned there are now Internet names with no dots in | ||
7590 | # them using only top-domain names, so setting this may | ||
7591 | # cause some Internet sites to become unavailable. | ||
7592 | # | ||
7593 | #Example: | ||
7594 | # append_domain .yourdomain.com | ||
7595 | #Default: | ||
7596 | # Use operating system definitions | ||
7597 | |||
7598 | # TAG: ignore_unknown_nameservers | ||
7599 | # By default Squid checks that DNS responses are received | ||
7600 | # from the same IP addresses they are sent to. If they | ||
7601 | # don't match, Squid ignores the response and writes a warning | ||
7602 | # message to cache.log. You can allow responses from unknown | ||
7603 | # nameservers by setting this option to 'off'. | ||
7604 | #Default: | ||
7605 | # ignore_unknown_nameservers on | ||
7606 | |||
7607 | # TAG: dns_v4_first | ||
7608 | # With the IPv6 Internet being as fast or faster than IPv4 Internet | ||
7609 | # for most networks Squid prefers to contact websites over IPv6. | ||
7610 | # | ||
7611 | # This option reverses the order of preference to make Squid contact | ||
7612 | # dual-stack websites over IPv4 first. Squid will still perform both | ||
7613 | # IPv6 and IPv4 DNS lookups before connecting. | ||
7614 | # | ||
7615 | # WARNING: | ||
7616 | # This option will restrict the situations under which IPv6 | ||
7617 | # connectivity is used (and tested), potentially hiding network | ||
7618 | # problems which would otherwise be detected and warned about. | ||
7619 | #Default: | ||
7620 | # dns_v4_first off | ||
7621 | |||
7622 | # TAG: ipcache_size (number of entries) | ||
7623 | # Maximum number of DNS IP cache entries. | ||
7624 | #Default: | ||
7625 | # ipcache_size 1024 | ||
7626 | |||
7627 | # TAG: ipcache_low (percent) | ||
7628 | #Default: | ||
7629 | # ipcache_low 90 | ||
7630 | |||
7631 | # TAG: ipcache_high (percent) | ||
7632 | # The size, low-, and high-water marks for the IP cache. | ||
7633 | #Default: | ||
7634 | # ipcache_high 95 | ||
7635 | |||
7636 | # TAG: fqdncache_size (number of entries) | ||
7637 | # Maximum number of FQDN cache entries. | ||
7638 | #Default: | ||
7639 | # fqdncache_size 1024 | ||
7640 | |||
7641 | # MISCELLANEOUS | ||
7642 | # ----------------------------------------------------------------------------- | ||
7643 | |||
7644 | # TAG: configuration_includes_quoted_values on|off | ||
7645 | # If set, Squid will recognize each "quoted string" after a configuration | ||
7646 | # directive as a single parameter. The quotes are stripped before the | ||
7647 | # parameter value is interpreted or used. | ||
7648 | # See "Values with spaces, quotes, and other special characters" | ||
7649 | # section for more details. | ||
7650 | #Default: | ||
7651 | # configuration_includes_quoted_values off | ||
7652 | |||
7653 | # TAG: memory_pools on|off | ||
7654 | # If set, Squid will keep pools of allocated (but unused) memory | ||
7655 | # available for future use. If memory is a premium on your | ||
7656 | # system and you believe your malloc library outperforms Squid | ||
7657 | # routines, disable this. | ||
7658 | #Default: | ||
7659 | # memory_pools on | ||
7660 | |||
7661 | # TAG: memory_pools_limit (bytes) | ||
7662 | # Used only with memory_pools on: | ||
7663 | # memory_pools_limit 50 MB | ||
7664 | # | ||
7665 | # If set to a non-zero value, Squid will keep at most the specified | ||
7666 | # limit of allocated (but unused) memory in memory pools. All free() | ||
7667 | # requests that exceed this limit will be handled by your malloc | ||
7668 | # library. Squid does not pre-allocate any memory, just safe-keeps | ||
7669 | # objects that otherwise would be free()d. Thus, it is safe to set | ||
7670 | # memory_pools_limit to a reasonably high value even if your | ||
7671 | # configuration will use less memory. | ||
7672 | # | ||
7673 | # If set to none, Squid will keep all memory it can. That is, there | ||
7674 | # will be no limit on the total amount of memory used for safe-keeping. | ||
7675 | # | ||
7676 | # To disable memory allocation optimization, do not set | ||
7677 | # memory_pools_limit to 0 or none. Set memory_pools to "off" instead. | ||
7678 | # | ||
7679 | # An overhead for maintaining memory pools is not taken into account | ||
7680 | # when the limit is checked. This overhead is close to four bytes per | ||
7681 | # object kept. However, pools may actually _save_ memory because of | ||
7682 | # reduced memory thrashing in your malloc library. | ||
7683 | #Default: | ||
7684 | # memory_pools_limit 5 MB | ||
7685 | |||
7686 | # TAG: forwarded_for on|off|transparent|truncate|delete | ||
7687 | # If set to "on", Squid will append your client's IP address | ||
7688 | # in the HTTP requests it forwards. By default it looks like: | ||
7689 | # | ||
7690 | # X-Forwarded-For: 192.1.2.3 | ||
7691 | # | ||
7692 | # If set to "off", it will appear as | ||
7693 | # | ||
7694 | # X-Forwarded-For: unknown | ||
7695 | # | ||
7696 | # If set to "transparent", Squid will not alter the | ||
7697 | # X-Forwarded-For header in any way. | ||
7698 | # | ||
7699 | # If set to "delete", Squid will delete the entire | ||
7700 | # X-Forwarded-For header. | ||
7701 | # | ||
7702 | # If set to "truncate", Squid will remove all existing | ||
7703 | # X-Forwarded-For entries, and place the client IP as the sole entry. | ||
7704 | #Default: | ||
7705 | # forwarded_for on | ||
7706 | |||
7707 | # TAG: cachemgr_passwd | ||
7708 | # Specify passwords for cachemgr operations. | ||
7709 | # | ||
7710 | # Usage: cachemgr_passwd password action action ... | ||
7711 | # | ||
7712 | # Some valid actions are (see cache manager menu for a full list): | ||
7713 | # 5min | ||
7714 | # 60min | ||
7715 | # asndb | ||
7716 | # authenticator | ||
7717 | # cbdata | ||
7718 | # client_list | ||
7719 | # comm_incoming | ||
7720 | # config * | ||
7721 | # counters | ||
7722 | # delay | ||
7723 | # digest_stats | ||
7724 | # dns | ||
7725 | # events | ||
7726 | # filedescriptors | ||
7727 | # fqdncache | ||
7728 | # histograms | ||
7729 | # http_headers | ||
7730 | # info | ||
7731 | # io | ||
7732 | # ipcache | ||
7733 | # mem | ||
7734 | # menu | ||
7735 | # netdb | ||
7736 | # non_peers | ||
7737 | # objects | ||
7738 | # offline_toggle * | ||
7739 | # pconn | ||
7740 | # peer_select | ||
7741 | # reconfigure * | ||
7742 | # redirector | ||
7743 | # refresh | ||
7744 | # server_list | ||
7745 | # shutdown * | ||
7746 | # store_digest | ||
7747 | # storedir | ||
7748 | # utilization | ||
7749 | # via_headers | ||
7750 | # vm_objects | ||
7751 | # | ||
7752 | # * Indicates actions which will not be performed without a | ||
7753 | # valid password, others can be performed if not listed here. | ||
7754 | # | ||
7755 | # To disable an action, set the password to "disable". | ||
7756 | # To allow performing an action without a password, set the | ||
7757 | # password to "none". | ||
7758 | # | ||
7759 | # Use the keyword "all" to set the same password for all actions. | ||
7760 | # | ||
7761 | #Example: | ||
7762 | # cachemgr_passwd secret shutdown | ||
7763 | # cachemgr_passwd lesssssssecret info stats/objects | ||
7764 | # cachemgr_passwd disable all | ||
7765 | #Default: | ||
7766 | # No password. Actions which require password are denied. | ||
7767 | |||
7768 | # TAG: client_db on|off | ||
7769 | # If you want to disable collecting per-client statistics, | ||
7770 | # turn off client_db here. | ||
7771 | #Default: | ||
7772 | # client_db on | ||
7773 | |||
7774 | # TAG: refresh_all_ims on|off | ||
7775 | # When you enable this option, squid will always check | ||
7776 | # the origin server for an update when a client sends an | ||
7777 | # If-Modified-Since request. Many browsers use IMS | ||
7778 | # requests when the user requests a reload, and this | ||
7779 | # ensures those clients receive the latest version. | ||
7780 | # | ||
7781 | # By default (off), squid may return a Not Modified response | ||
7782 | # based on the age of the cached version. | ||
7783 | #Default: | ||
7784 | # refresh_all_ims off | ||
7785 | |||
7786 | # TAG: reload_into_ims on|off | ||
7787 | # When you enable this option, client no-cache or ``reload'' | ||
7788 | # requests will be changed to If-Modified-Since requests. | ||
7789 | # Doing this VIOLATES the HTTP standard. Enabling this | ||
7790 | # feature could make you liable for problems which it | ||
7791 | # causes. | ||
7792 | # | ||
7793 | # see also refresh_pattern for a more selective approach. | ||
7794 | #Default: | ||
7795 | # reload_into_ims off | ||
7796 | |||
7797 | # TAG: connect_retries | ||
7798 | # This sets the maximum number of connection attempts made for each | ||
7799 | # TCP connection. The connect_retries attempts must all still | ||
7800 | # complete within the connection timeout period. | ||
7801 | # | ||
7802 | # The default is not to re-try if the first connection attempt fails. | ||
7803 | # The (not recommended) maximum is 10 tries. | ||
7804 | # | ||
7805 | # A warning message will be generated if it is set to a too-high | ||
7806 | # value and the configured value will be over-ridden. | ||
7807 | # | ||
7808 | # Note: These re-tries are in addition to forward_max_tries | ||
7809 | # which limit how many different addresses may be tried to find | ||
7810 | # a useful server. | ||
7811 | #Default: | ||
7812 | # Do not retry failed connections. | ||
7813 | |||
7814 | # TAG: retry_on_error | ||
7815 | # If set to ON Squid will automatically retry requests when | ||
7816 | # receiving an error response with status 403 (Forbidden), | ||
7817 | # 500 (Internal Error), 501 or 503 (Service not available). | ||
7818 | # Status 502 and 504 (Gateway errors) are always retried. | ||
7819 | # | ||
7820 | # This is mainly useful if you are in a complex cache hierarchy to | ||
7821 | # work around access control errors. | ||
7822 | # | ||
7823 | # NOTE: This retry will attempt to find another working destination. | ||
7824 | # Which is different from the server which just failed. | ||
7825 | #Default: | ||
7826 | # retry_on_error off | ||
7827 | |||
7828 | # TAG: as_whois_server | ||
7829 | # WHOIS server to query for AS numbers. NOTE: AS numbers are | ||
7830 | # queried only when Squid starts up, not for every request. | ||
7831 | #Default: | ||
7832 | # as_whois_server whois.ra.net | ||
7833 | |||
7834 | # TAG: offline_mode | ||
7835 | # Enable this option and Squid will never try to validate cached | ||
7836 | # objects. | ||
7837 | #Default: | ||
7838 | # offline_mode off | ||
7839 | |||
7840 | # TAG: uri_whitespace | ||
7841 | # What to do with requests that have whitespace characters in the | ||
7842 | # URI. Options: | ||
7843 | # | ||
7844 | # strip: The whitespace characters are stripped out of the URL. | ||
7845 | # This is the behavior recommended by RFC2396 and RFC3986 | ||
7846 | # for tolerant handling of generic URI. | ||
7847 | # NOTE: This is one difference between generic URI and HTTP URLs. | ||
7848 | # | ||
7849 | # deny: The request is denied. The user receives an "Invalid | ||
7850 | # Request" message. | ||
7851 | # This is the behaviour recommended by RFC2616 for safe | ||
7852 | # handling of HTTP request URL. | ||
7853 | # | ||
7854 | # allow: The request is allowed and the URI is not changed. The | ||
7855 | # whitespace characters remain in the URI. Note the | ||
7856 | # whitespace is passed to redirector processes if they | ||
7857 | # are in use. | ||
7858 | # Note this may be considered a violation of RFC2616 | ||
7859 | # request parsing where whitespace is prohibited in the | ||
7860 | # URL field. | ||
7861 | # | ||
7862 | # encode: The request is allowed and the whitespace characters are | ||
7863 | # encoded according to RFC1738. | ||
7864 | # | ||
7865 | # chop: The request is allowed and the URI is chopped at the | ||
7866 | # first whitespace. | ||
7867 | # | ||
7868 | # | ||
7869 | # NOTE the current Squid implementation of encode and chop violates | ||
7870 | # RFC2616 by not using a 301 redirect after altering the URL. | ||
7871 | #Default: | ||
7872 | # uri_whitespace strip | ||
7873 | |||
7874 | # TAG: chroot | ||
7875 | # Specifies a directory where Squid should do a chroot() while | ||
7876 | # initializing. This also causes Squid to fully drop root | ||
7877 | # privileges after initializing. This means, for example, if you | ||
7878 | # use a HTTP port less than 1024 and try to reconfigure, you may | ||
7879 | # get an error saying that Squid can not open the port. | ||
7880 | #Default: | ||
7881 | # none | ||
7882 | |||
7883 | # TAG: balance_on_multiple_ip | ||
7884 | # Modern IP resolvers in squid sort lookup results by preferred access. | ||
7885 | # By default squid will use these IP in order and only rotates to | ||
7886 | # the next listed when the most preffered fails. | ||
7887 | # | ||
7888 | # Some load balancing servers based on round robin DNS have been | ||
7889 | # found not to preserve user session state across requests | ||
7890 | # to different IP addresses. | ||
7891 | # | ||
7892 | # Enabling this directive Squid rotates IP's per request. | ||
7893 | #Default: | ||
7894 | # balance_on_multiple_ip off | ||
7895 | |||
7896 | # TAG: pipeline_prefetch | ||
7897 | # HTTP clients may send a pipeline of 1+N requests to Squid using a | ||
7898 | # single connection, without waiting for Squid to respond to the first | ||
7899 | # of those requests. This option limits the number of concurrent | ||
7900 | # requests Squid will try to handle in parallel. If set to N, Squid | ||
7901 | # will try to receive and process up to 1+N requests on the same | ||
7902 | # connection concurrently. | ||
7903 | # | ||
7904 | # Defaults to 0 (off) for bandwidth management and access logging | ||
7905 | # reasons. | ||
7906 | # | ||
7907 | # NOTE: pipelining requires persistent connections to clients. | ||
7908 | # | ||
7909 | # WARNING: pipelining breaks NTLM and Negotiate/Kerberos authentication. | ||
7910 | #Default: | ||
7911 | # Do not pre-parse pipelined requests. | ||
7912 | |||
7913 | # TAG: high_response_time_warning (msec) | ||
7914 | # If the one-minute median response time exceeds this value, | ||
7915 | # Squid prints a WARNING with debug level 0 to get the | ||
7916 | # administrators attention. The value is in milliseconds. | ||
7917 | #Default: | ||
7918 | # disabled. | ||
7919 | |||
7920 | # TAG: high_page_fault_warning | ||
7921 | # If the one-minute average page fault rate exceeds this | ||
7922 | # value, Squid prints a WARNING with debug level 0 to get | ||
7923 | # the administrators attention. The value is in page faults | ||
7924 | # per second. | ||
7925 | #Default: | ||
7926 | # disabled. | ||
7927 | |||
7928 | # TAG: high_memory_warning | ||
7929 | # Note: This option is only available if Squid is rebuilt with the | ||
7930 | # GNU Malloc with mstats() | ||
7931 | # | ||
7932 | # If the memory usage (as determined by gnumalloc, if available and used) | ||
7933 | # exceeds this amount, Squid prints a WARNING with debug level 0 to get | ||
7934 | # the administrators attention. | ||
7935 | #Default: | ||
7936 | # disabled. | ||
7937 | |||
7938 | # TAG: sleep_after_fork (microseconds) | ||
7939 | # When this is set to a non-zero value, the main Squid process | ||
7940 | # sleeps the specified number of microseconds after a fork() | ||
7941 | # system call. This sleep may help the situation where your | ||
7942 | # system reports fork() failures due to lack of (virtual) | ||
7943 | # memory. Note, however, if you have a lot of child | ||
7944 | # processes, these sleep delays will add up and your | ||
7945 | # Squid will not service requests for some amount of time | ||
7946 | # until all the child processes have been started. | ||
7947 | # On Windows value less then 1000 (1 milliseconds) are | ||
7948 | # rounded to 1000. | ||
7949 | #Default: | ||
7950 | # sleep_after_fork 0 | ||
7951 | |||
7952 | # TAG: windows_ipaddrchangemonitor on|off | ||
7953 | # Note: This option is only available if Squid is rebuilt with the | ||
7954 | # MS Windows | ||
7955 | # | ||
7956 | # On Windows Squid by default will monitor IP address changes and will | ||
7957 | # reconfigure itself after any detected event. This is very useful for | ||
7958 | # proxies connected to internet with dial-up interfaces. | ||
7959 | # In some cases (a Proxy server acting as VPN gateway is one) it could be | ||
7960 | # desiderable to disable this behaviour setting this to 'off'. | ||
7961 | # Note: after changing this, Squid service must be restarted. | ||
7962 | #Default: | ||
7963 | # windows_ipaddrchangemonitor on | ||
7964 | |||
7965 | # TAG: eui_lookup | ||
7966 | # Whether to lookup the EUI or MAC address of a connected client. | ||
7967 | #Default: | ||
7968 | # eui_lookup on | ||
7969 | |||
7970 | # TAG: max_filedescriptors | ||
7971 | # Reduce the maximum number of filedescriptors supported below | ||
7972 | # the usual operating system defaults. | ||
7973 | # | ||
7974 | # Remove from squid.conf to inherit the current ulimit setting. | ||
7975 | # | ||
7976 | # Note: Changing this requires a restart of Squid. Also | ||
7977 | # not all I/O types supports large values (eg on Windows). | ||
7978 | #Default: | ||
7979 | # Use operating system limits set by ulimit. | ||