I run a Fedora Core 1 Linux box at fizi.ca right now and a friend of mine just hooked up a Natural Selection Server so he can beta test his mod 'Capture the Gorge' (Feel free to try it out at fizi.ca). I was wondering if anyone knew a piece of software for linux that could moitor overall bandwidth and bandwidth per specific port. I have to watch out that my ISP dosn't drop a **** on me for uploading too much and the only real thing sending out data would be the NS game server. I'd love to beable to track its bandwidth via the port it runs off of. Any ideas?