There are loads of site students are using to bypass the list of bloccked site in ISA server2004. At the moment I have a big list of blocked proxy bypass sites but I think this will only get bigger is their a way to block all proxy site do they use a special port or can it be detected in the host headers? looking through the traffic log there does not seem to be anything concistant that could be blocked.
From: fort frances.on.ca
It is a moving target both because they are popping uplike mushrooms and because they use different techniques. Some also use SSL and so cannot be inspected for content. You have three choices... manage a growing whitelist, manage a growing blacklist, or subscribe to a decent content management add-on.
The School of Hard Knocks is a mean teacher. She gives the exam before the lesson.
Hi We also heavily engaged. Selected 2 parallel actions : managing and empowring our blacklist / URL filtering of "proxy" word ; while sounding too open to filter normally our business would not be relevant to any technical proxy information! so we simply are targeting it and seeking for better methods. Good luck,