I am looking for an open source piece of software that will monitor all of our LAN traffic. I have a Cisco 3550 that handles our LAN and can turn on port mirroring to monitor everything going out our router - at least that is what I was told I had to do. I was looking at a Windows-based piece from Computer Associates (E Trust Intrusion Detection) that was really nice. It monitored everything - and I mean everything and gave me full feedback on where people were going, etc. Problem was that it was way to expensive for what I could rationalize. Is there anyone out there that is familiar with CA's E Trust Intrusion Detection and a possible open source alternative. I have run ethereal and it was nice but did not give me "all" of the information that I really wanted. thanks, DF
