Don Munyak wrote:

 > Is the point of this monitor just to see if m0n0wall is working ?
 > I did not see any kind of doc's about this.
 >
 > - Don
 >

It is just for traffic monitoring on a selectable interface. Shows a 
graph with selectable colors. Nice thing to play with...

See Screenshot I made:
http://home.vrweb.de/~b.euler/Image1.png