[IMail Forum] IP/Bandwidth Monitoring

[WebMaster]

Anybody know of a program that can keep track of bandwidth based on IP address/subnet? We're about to add a large group of citrix users accessing an app hosted here and I want to be able to track how much of the bandwidth they are using. They'll be coming in from 3 or 4 different locations and I'd like to be able to differentiate how much each location is using.

I've found a bunch of sniffer/analyzer/monitoring packages, but none of them does exactly what I want it to do.

Is there a different list I should join and ask this question?

Thanks,

Mike