Limiting user traffic.

[shadow <fshadow@cru.itep.ru>]

Hello,

I know that I'm posting to a wrong list, but nevertheless. Maybe you'll be
able to help me to solve my problem.

I have a workstation connected to the Internet via LAN (campus-net), and,
of course, have to pay for my traffic. But there are many physical users,
and all of them use my connection. I want to limit incoming and outgoing
traffic for each user. How can I do this? Are there any software included
into Debian?

I would be very grateful if someone helps me.