Ways to use ports without changing the router

The problem I have deals with using certain ports that seem to be inaccessible. My predicament is that I could use port forwarding probably if I could access the router, but the problem is that I can’t. I’m using my college’s LAN ethernet line and they put up a firewall to block certain ports. The ports that I need access to include:

TCP: 80, 443, 9946, 42100, 14310-14328, 15310-15328

UDP: 3659, 6000, 9570, 17502

It was suggested to use port forwarding in case the router uses a NAT type, which it does (type 2). Seeing as how the school is running the LAN line, I was wondering if anyone knew a trick to get around the NAT type or firewall to somehow gain access to these ports.