To summarise: I have a dedicated server with a few friends running a torrent client with web gui. Each user is running a client under their username on the server so downloads go in their user dir, and only they have access to their own files etc.
How can I monitor and limit the bandwidth per month on a per user basis?
I was thinking there must be a way using iptables maybe. And by monitoring the bandwidth used by all processes of user X. And if they have used more then their monthly allowed bandwidth of Y GB, they get a message saying that and networking gets blocked for their torrent client, or the client gets killed completely. I also thought about squid, but seeing as it would be using multiple torrent clients this could use a lot of server resources...
I am using debian lenny.
I'm not sure how to do this...
would this be possible at all? I am grateful for even just partial solutions to this...