Lan firewall
 

There is a firewall at the place I work and I need to circumvent this to access p2p files. How do I do this?

Get to know the network administrator. That person probably enjoys filesharing too, so would know whether to trust users filesharing at work. If not, the network admin is likely to be paranoid about filesharing and would love to be able to point fingers at someone for all the company's network problems.