> Nothing you do will be 100%, unless you unplug from the net. So. you > need to decide how much risk you are willing to take.
Yes, and in fact there are some academic papers out there that establish this pretty convincingly. This problem is well studied in the context of trying to prevent prisoners from passing messages to one another without being detected. I've also read papers on how communication can be achieved just through the timing delays of packets sent on innocuous data transfers. If you assume the person inside can set up a service outside of the link, there's always a way to tunnel through. With that said, there are many legitmate reasons to attempt to filter traffic to protect people from malicious sites and to try to keep people from getting distracted at work. But really, it all just comes down to a best-effort compromise where you just decide how much effort is reasonable to keep honest people honest most of the time. tim _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
