Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I believe this has to do with the constant back and forth that occurs with SSH. You'd be monopolizing access to a part of the tower. Either that, or they just don't want you doing it.

TEG
 
Do you actually get an IP over 3G? It would be an internal IP by your provider I think but nothing that you could use to ssh I don't think. I would assume that a couple phones next to each other on 3G would show the same ip on a site like that but would actually have a different 'internal' ips
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.