I have configured a CentOS 6 server to run Nagios to monitor our servers health.
It works on all server except that running the TMG.
I get the error CRITICAL - Socket timeout after 10 seconds from Nagios.
Nagios uses NSclient++ on port 12489 to communicate with servers.
I was wondering if anyone could help me configure the rule to allow Nagios to communicate with the TMG server