If this is true then that's really bad. At university you're an adult; you can do whatever the hell you want.
Personally I had no problem looking at porn in my halls, and I went to a Russell Group uni which surely would be stricter? It sounds stupid but sometimes I got paranoid that people around me might've known I was looking at porn as maybe there was no intranet privacy or whatever and people in nearby noticed my activity? (Yes, I'm a real dumbass when it comes to the internet.) I did get some funny looks from people sometimes so it makes me wonder.