Hi

I'm brand spanking new to Linux (since about three hours ago..), and what I need and have been searching high and low for, is some sort of open-source admin program that will allow me to monitor a (Active Directory Network) LAN, and deny access to any unregistered PC MAC addresses. I found ONE windows solution that costs about $500 (which we don't want to spend..), so hence my going down the Linux route.

I came across OpenNAC on Sourceforge, but it looks waaay to complicated. I want an easy route!

Any suggestions? I know it's a long shot....