Hello everyone.
I just added a m0n0wall firewall monitor to Xymonton.
m0n0wall is a popular open-source firewall based on FreeBSD. It has a pretty simple, clean web-based GUI for management and it may be installed to hard drive, booted from CD or USB, and it even runs on several "embedded" systems. m0n0wall may be found here: http://m0n0.ch/wall
The xymon_m0n0CFG.rb script polls the main status page from one or more m0n0walls using wget and then pulls out the relevant fields (Version, Platform, Uptime, Last modification change date/time, and Notes) and reports them back to a Xymon server to be displayed.
The script is configured to send a yellow alert if the m0n0wall has been up less than 24 hours, or if the configuration has been changed.
Instructions on installing this script and the the latest version may be found here: http://www.revpol.com/xymon_m0n0CFG_script
Hope this is useful to someone!
(a similar email will be cross-posted to the m0n0wall mailing list)
-- Bill Arlofski Reverse Polarity, LLC