Looking for an open source real-time network analysis program

Posted by JrSysAdmin on Server Fault See other posts from Server Fault or by JrSysAdmin
Published on 2010-04-12T20:32:16Z Indexed on 2010/04/12 20:33 UTC
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Can somebody recommend an open source real-time network analysis program?

What I'm looking for the program to do is display a graph of bandwidth usage by IP within our internal network that can quickly be viewed any time we need to (typically when we want to quickly find out who is utilizing high amounts of bandwidth and slowing down the network).

We ideally simply want to hook up a monitor on the wall of our server room to a system whose NIC will be in permissive mode to log all network activity in a visual manner which can easily be seen and running 24/7.

Prefer open source as I do not have a budget for this project and prefer open source projects in general. I'd also prefer for this to be available for CentOS but any linux distro or Windows OS would be acceptable.

Thanks!

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