hi guys - please can you help im a new systems admin guy and well heck having so many problems with people going onto facebook using a proxy site - how the heck can i get it to stop. My boss kinda fuming. Please help.

What are you using to block sites? WebSense or something similar?

You'll never be able to block everybody all the time. The key thing is that your company needs to put harsh restrictions in place for people caught browsing sites they shouldn't.

Using squid is not an optimal method for blocking. It works, but you are going to have to add every single proxy site to the file, or start keyword blocking.

http://www.freesoftwaremagazin.....king_squid

I would research Websense and sell the benefits to your boss. It's extremely effective, and they handle figuring out the list of proxy sites.

The only way to get around Websense is via SSH and a socks proxy... trust me, I know =) The place I work for uses websense.