How can you find out the IP address of a single computer inside a college network.

Every computer has the same public IP address on the network. How is it possible, after discovering that the IP is from that college, to find the computer from which the attack/request/etc originated?


Question: Remove [os-rot] tag?
Answer: Ah, I just removed those tags, including the related questions which were just a huge collection of personal opinion about how everybody keeps their machine clean. Not really a form of question we'd encourage anymore.