Do you know anyone that's gotten through?
There's (at least) a chance that the network is being filtered. If that's the case, you're not going to get through.
Deterministic Network Enhancer is used by Cisco VPN, but it's not likely that the University is tunneling out to the ISP through VPN, or using DNE: DNE is usually a client-side thing.
Your *BEST* shot is to talk with the networking people, explain the issue, and see if you can get them to open things up for you, possibly on some schedule (when the University bandwidth usage is in a more "recreational" mode (i.e., fewer people trying to use the system for actual study or work).
Otherwise, I believe you are hosed.
Good Luck
Scott