Dear all, I have to build a proxy server by using the squid. The number of clients is 400 people. I do not know the cause of the error message that appears in the cache.log. In the weekday, I have come up with an error every few hours 8:00 to 18:00. Access concentration I look like does not matter. [cache.log error message] 2015/05/11 13:37:24| TunnelStateData::Connection:: error : FD 610: read/write failure: (110) Connection timed out Why I want to know whether this error has occurred. Also, I want to know the impact on the user. [squidclient mgr:filedescriptor] Every five minutes record extract FD610 It looks like an error has occurred in the use to which the terminal of xxx.xxx.2.115 user. Is it a problem of communication of the user and the proxy? Active file descriptors: File Type Tout Nread * Nwrite * Remote Address Description ---- ------ ---- -------- -------- --------------------- ------------------------------ 610 Socket 893 39494* 50228 xxx.xxx.xxx.162:443 outlook.office365.com:443 2015/05/11_13:08:29 610 Socket 86329 45754* 103329 xxx.xxx.6.141:50174 Reading next request 2015/05/11_13:13:29 610 Socket 86258 6516* 13975 xxx.xxx.2.115:50820 Reading next request 2015/05/11_13:18:29 610 Socket 85958 12472* 34531* xxx.xxx.2.115:50820 Reading next request 2015/05/11_13:23:29 610 Socket 85657 12472* 34531* xxx.xxx.2.115:50820 Reading next request 2015/05/11_13:28:29 610 Socket 85357 12472* 34531* xxx.xxx.2.115:50820 Reading next request 2015/05/11_13:33:29 610 Socket 86336 3652* 8003 xxx.xxx.3.152:50817 Reading next request 2015/05/11_13:38:29 [access.log] I do not see suspicious error log I tried to extract the address xxx.xxx.2.115. Please tell me a good idea toward someone solve. I look forward to hearing from you soon. ken _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users