Hi, I'm running the check_http plugin on two nagios hosts in different networks to check same IIS server. To bypass the ntlm authentication I'm using ntlmaps as proxy in the command line, and both hosts are using same command. ./check_http -H IIS_IP_Address -I 127.0.0.1 -p 5865 -u http://IIS_IP_ADDRESS/ -t 30 The nagios host that is in the same network of the IIS server works fine, but the other host srvice check is answering timeout. I tcpdumped on nagios host and the connection to the IIS server from the nagios plugin is working in both cases. I tried to connect using a web browser configured with same proxy in both hosts and it works fine too. I tried also with check_http v1.109 the nagios core is 2.9 and the nagios-plugins package is 1.4.9 in both hosts. Any idea? Regards, Victor Gil System Administrator GyD Iberica, S.A. / Giesecke & Devrient Group Industria, 3-5, E-08970 Sant Joan Despi (Barcelona), Spain Ext. 371, Tel. (+34) 932.027.371, Fax (+34) 93 477 28 97 mailto:victor.gil@gi-de.com http://www.gi-de.com Antes de imprimir este correo electrónico, piense si es necesario. El Medio Ambiente es cosa de todos. Abans d´imprimir aquest correu electrònic, penseu bé si és necessari fer-ho. El Medi Ambient és cosa de tots. Only print if necessary. The environment is everybody's cause.