Connect to Cisco VPN using VPNC in Ubuntu
I have tested this on Ubuntu 7.04 Feisty Fawn. The best tutorial I could find is located
here and the only thing that's left out of that tutorial is the example of using a token provided by your IT team.
After finishing section 2.1 you will need to remove Xauth password line from your config file that way when you run sudo vpnc myconf it will ask you for the password.
After all said and done your config file should only contain:
IPSec gateway gateway.to.use
IPSec ID groupname
IPSec secret passwordforgroup
Xauth username myusername