No DC++ servers on campus please. We used to let this slide but now we are under increasing pressure from copyright holders to be doing something about such things. Anyone found running one will be banned from HallNet.
We do not do anything that detects exactly what is being run on your computer by any sort of voodoo witchcraft

We may occasionally 'portscan' a specific computer to see what services are running on that computer. This is to check for compromises or to see if that computer is runing something it shouldn't. This is explicitly allowed on a closed network and there is are no legal implications of doing so.
By signing our AUP you do not sign away your legal rights to privacy. Samba is 100% right on that. Our AUP cannot supercede your rights in UK and european law. However, what we are doing is not invading your privacy as we are only looking at things your computer is making openly available. To be honest, we haven't 'port scanned' anyone for ages.
We mainly detect users doing things we'd rather they didn't by the traffic coming to and from their computer. Just because you aren't actively using your p2p app doesn't mean its not generating any network traffic. The whole ethos of p2p is that your computer should me making its files available to others. What was interesting this year is the number of users who would swear blind they had removed ares or similar from their computer but were detected still running it. this is dues to the number of malware infested versions of such software doing the rounds that wouldn't actually uninstall. Please be 100% sure of the software you install on your computer folks! This is why we insist such software is removed from computers connected to hallnet and not just 'unused'. Too many users don't know how to disable the software properly.
Hope this clears a few things up?
(sorry for any typos but I'm typing this in a big hurry)