We have a web server set up on a DMZ network in our company. The traffic flow is such that internet line from ISP comes to a firewall, goes to IPS connected to specific dmz interface for that web server, from IPS goes to dmz switch from where it goes to web server.
The setup was done by another person, so please no questions or comments on best practices there.
Further, we enabled web server monitoring using this site:
Initially all was fine. Recently we are getting downtime notifications and then it will come up again after few minutes. And this happens twice or thrice in the day. Example below for notification for when the site comes up after it has gone down.
Funny part is when the downtime notification comes, we immediately attempt to connect to the web server and it seems to be running fine.
Any ideas of where i can/should start looking???
https://xxxx.xxxx.xxx.xxx now work
Operation restored at 2012-09-08 16:25:42.
Url was down as a result of:
Http error:Http_client.Bad_message("Unknown reason (e.g. unexpected eof,
First error was detected at 2012-09-08 16:19:30
Last error was detected at 2012-09-08 16:25:07
Downtime total 5 min(s) 37 sec(s).