Chances are, if you work for a company or organization big enough to think filtering your net access is a good idea, your local IT people are about as bright as bags of hair. Fortunately, Lifehacker has some advice on how to deal with clueless but powermad local admins. You know the type.
(Don’t start with me if you read this and think I’m casting aspersions on your technical skills; if you read this, you’re almost certainly not an idiot.)