Full user review
"Nice free network monitor"
It keeps track of your mac addresses, and lets you know if an unknown mac address tries to access your network.
Includes winpcap, ethereal, and airsnare. You must know all of your mac addresses to use this (computers, routers). Had to download a missing file from my puter to get it running, but after finding it on some dude's website, I got this thing working
Does what it says, but from what I understand, it's a lot of work for something someone can bypass by cloning one your mac addresses.