Ethernet access in the dorm rooms requires 802.1X authentication. This means your Trinity username and password is required to be able to use the internet.
If your port has been activated and you still cannot connect, open a browser and navigate to http://neverssl.com
It is important to use an HTTP only website such as the one above so you may be properly redirected to the network login page.
Once redirected, enter your Trinity username and password and you will have internet access.