Nagios - Check Proxy Check

"This script retrieves a URL via a specified proxy server and alerts (using the standard Nagios conventions) if the request fails.“

We’re running a couple of services through a proxy server for a number of good, and to be honest a couple of not so good but mandated, reasons. The Check Proxy Check Nagios Plugin ensures that if the proxy goes down in a way that stops us pulling pages through it we know.