|This smacks of somebody hoping to mess around while at work and view web sites they shouldn't be.|
Here's some free advice ok.
First off, you don't own the computer/network/internet connection, your work does. So they have every right to tell you what you can, and can't do with it.
Second, you're being paid to work, not sit there and peruse porn, or whatever, during work hours.
Since they have restrictions in place, your trying to circumvent them is illegal. And, if they're like the place I work, they monitor for people just like you. So if you continue, you'll get caught.
My advice is, grow a brain, stop cheating and do your job. Or just quit and go find a job where they don't mind paying you to not work.