I work at a place the blocks a TON of network traffic. Most of the standard sites are blocked by default such as Twitter, Facebook, or Youtube. They also block specific network protocols and traffic so I cannot remote into my home network easliy. So I use LogMeIn Free to do the job for me. As long as I can access www.logmein.com from work, I can remote into my desktop at home! Go to logmein.com, register for a free account, install the small service app on your desktop, and you are good to go. To access your computer remotely just access your online logmein.com account and click on your computer name.