Nagios - Checking Public IPs by proxy

[Asgorath]

I have a few of these problems but they all follow this basic format:

the machine can be pinged from the internet
the machine cannot be pinged from the nagios box

The nagios box needs to determine if the machine is responding

How can I do this? Is there some nagios service I can set up that will use an internet based service to ping my host and return the results? I know I do a similar thing when I'm checking to see if my mail IPs are on RBL lists using nagios.

 

[Asgorath]

Or should I just hire an outside service to monitor my public IPs?

 

[Berg0]

I'd recommend pingdom, cheap, and works quite well.

we also use alert site, but it's a bit more expensive.

 

[Asgorath]

so $10-$40

That's a neat site. I like the fact you can make a publicly accessible page with your stats. That way I can set my nagios install to scrape that page for all the information it needs.