I'm kind of new to Linux (but learning) so bare with me if I say something stupid :P.
I'm currently running an Ubuntu fileserver which automates a whole bunch of downloading tasks. At present it is set to throttle downloads at certain times so I don't impact too much on casual browsing iPlayer etc during peak times. But this is not ideal.
I was wondering if it is possible to limit overall system bandwidth usage based on sniffing packets from other systems on the LAN that are going to/from specific URLS (e.g. iplayer)
If somebody could point me in the direction of the relevant tools, I'm happy to do the research myself. Just right now I wouldn't know where to start...