Network Monitoring Apps

[kbldawg]

I have a customer that I have allowed him to share his internet connection within their community. It's one of those non-profit type deals. I charge him a butt-load of money and he gets to share.

Anyway...his network is starting to cause issues with the rest of my customers so I have had to kill his connection.

Is there a user-friendly, windows type network analysis software available that would allow a beginner to be able to indentify "bad stuff" on the network which would enable him to control his side of things a bit better?

[Elshar]

Now, I haven't used this for windows, but try this:

http://www.ethereal.com/download.html

I've only really used it in linux and freebsd, so ymmv in windows :)