What are my options for monitoring bandwidth on a per user basis? Ideally, I'd like something thats easy to configure (like a webmin module pleeeease?), and that could monitor ALL bandwidth. Not just web bandwidth but also ftp/afp uploading and downloading, and email traffic. I know this is a rather complicated task but I'm hoping theres an easy solution since so many people want/need such a function.
\thanks

Most people I know who monitor b/w usage on a per user basis allocate a discrete IP address for each user and use an ethernet switch that has monitoring capabilities.

I would have to think about how to do it with a single IP address.....

What is the application?

The application is a single server, acting as a web host. I need to log all of my client's bandwidth. I'd like to get ftp/afp and email bandwidth too that way if i get a strange customer that hogs a particular service, it will count, so so i can charge them accordingly.

Will IPAUDIT, from the link below work for you?

http://www.cotse.com/tools/netman.htm


I guess not since there is no user info, just IP addresses.....

Here is an interesting paper on using SNORT for the FTP B/W monitoring problem:

http://www.ittc.ku.edu/research/thes...ungwei_lim.pdf