I think you're going to have a real problem, unless you can sweet talk the technicians that run the college network. If they are prepared to open the required ports on their firewall then you shouldn't have any problems. I doubt they would do this though as it would leave the network vulnerable.
The second alternative is to get your own private phone line into your accomodation.
The only other alternative is to get anyone who you wish to fly with to come to you with their comp and connect them on your own LAN. Not an easy proposition if they live a great distance away.
Sorry to give you dissappointing news
eno