I have been trying to more closely monitor my network in order to better 
get VPN and traffic shaping under control. I found the bandwidth monitor 
built in to M0n0 to be a little lacking for this purpose.

As it turns out, the feature on the M0n0 menu called SNMP can be used to 
send info to a remote server to monitor bandwidth.

I am sure that many of you already know this stuff, but it was new to 
me. I have not played around with SNMP prior to today.

First, this is assuming you already have a working Debian machine that 
is running Apache.

You need to set up a program called MRTG on your Debian machine. You can 
do this by issuing the command "apt-get install mrtg"

Next, configure your M0n0wall under the SNMP menu.
- Enable SNMP
- Enter your Debian system's IP address in "system location"
- Enter your email address as the system contact
- Leave community as "Public"

Then, you need to configure MRTG
- Issue the command - "cfgmaker --output=/etc/mrtg.cfg xxx.xxx.xxx.xxx" 
(x's being ip address of M0n0wall) at the Debian prompt.

Next, issue the command "mrtg".

Now point your web browser to "http://debiansystem/mrtg" and find the 
appropriate html file.

Happy monitoring!

Andy