https://www.google.com/search?q=nagios+radius+plugin The very first link has several plugins to monitor Radius from Nagios. Was a google search too daunting? [I hate to snark, but that seems a pretty obvious thing to try.] RS> Hello, RS> I have configured and installed radius server but now i wish to RS> monitor the "radius" service in nagios. RS> But i am not getting any success if any body can help or let me RS> know whether there is any command to moinitor that in RS> nagios. i want to know whether the service is running or not RS> Please help me RS> Thanks and regards RS> Rishabh. RS> - RS> List info/subscribe/unsubscribe? See RS> http://www.freeradius.org/list/users.html