You can send the commands using shell to the leds:

echo 1 > /dev/led/led2     <- Turns LED 2 on
echo 0 > /dev/led/led2     <- Turns LED 2 off
echo fx> /dev/led/led2     <- Flashes LED 2 at intervals where x=1-9.  1 is
fastest 9 is slowest

Have fun!

-----Original Message-----
From: Hans Mojave [mailto:root1981 at gmail dot com] 
Sent: Tuesday, January 09, 2007 5:37 PM
To: m0n0wall at lists dot m0n0 dot ch
Subject: [m0n0wall] LEDs on Wrap board

Hi there,

i build a monowall on a Pc-Engines Wrap1E2 today. Wonder if there is a way
to use the 3 front LEDs for some stuff. Left led is power, but the other two
seem to be unused.

One for traffic and the other one for Firewallfilter or something would be
nice. 

Does anybody know a way to do that with monowall?

best regards and sorry for bad englisch
Hans