ZID offers VPN access to the internal uibk network (138.232.x.x; Class B) which is necessary for some services (License Servers, Mounting Shared Folders, Library Access, …):

https://vpn.uibk.ac.at

Installation, FAQ etc. (german only): VPN-Zugang zum INNET

They recommend using AnyConnect.

If you prefer vpnc:

Settings:

Gateway: vpn1.uibk.ac.at
User: c703XXX
Pass: YourC703XXX-Password
Group name: uibk.ac.at
Group password: vpn2001-zugang

The username is your c-Number and user password is your password.

On Ubuntu system (version > 10.11) you have to restart the network-manager (or best just reboot your system) before you can connect with gnome vpnc network manager.