|This all smacks of somebody who has restrictions at work he doesn't like. If this is the case|
ie: you've been restricted from using certain software or accessing certain sites
then you need to rethink what it is you're trying to do.
If your workplace has put in such restrictions, as is their right since they own the equipment and network you're using while at work, you can bet they're monitoring for people trying to circumvent their security.
I work as a network technician and part of my job is doing just that......monitoring for people who try to bypass our security. Getting caught doing so, and you will get caught, means immediate dismissal and when we escort you out the door, we place you in the hands of the police and you are also charged criminally.
In a nutshell, your idea won't work. Because no matter what you do, at some point in time the data (ie: the porn website or whatever it is you're looking at that you're not supposed to) has to enter your work network. At that point, it's all monitored. Every bit. Every page, every frame, every packet. So you can try to use a proxy on the internet, you can try VPN'ing to your home PC it won't matter. As soon as it hits your work network, you get busted. Do not pass go, do not collect $200.00
So, my best advice is, do this on your own time, on your own computer on your own network on your own internet connection in your own home where nobody can tell you what you can and can't do.