Monitor internet access easily?

[Kristi2k]

Is there an easy way to monitor certain computers on a network to see what websites they are going to? We have a Windows 2003 Server and need a free way to do this...

 

[dphantom]

Try this freeware - Internet Usage Monitor 7.7 Lite

http://www.download.com/Internet-Usage-Monitor/3000-2155_4-10338776.html

I use ISA 2000 with SurfControl webfilter, but I've read good reviews on the app above.