Chris Bagnall wrote:
> I'm conscious that given the number of m0n0walls I've now deployed to both
> clients and friends, I'd really like to have some method of verifying
> they're all running as they should (and it's a good way of monitoring the
> ISPs for reliability at the same time).
> 
> Before I go and write a script to ping boxes every few minutes, does anyone
> have 1) a better way of doing it, and/or 2) any scripts they'd feel
> comfortable sharing?

I use Nagios (http://www.nagios.org/). Simply add a rule on the m0n0wall 
boxes allowing ICMP from your Nagios host to their WAN interface.

This article should help to get you going: 
http://www.novell.com/coolsolutions/feature/16723.html

I have a cheap virtual server with decent connectivity that checks all 
my clients' machines. It's great because I receive an alert mostly 
before they even realise they are down (down usually due to our infamous 
telecomms provider here in ZA).

Regards
--
Marko