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i put the these feilds in the gui into these conf options: Gateway -> IPSec gateway
Group name -> IPSec ID
Group password -> IPSec secret
username -> Xauth username
User Password -> Xauth password
so what i have in /etc/vpnc/default.conf is
IPSec gateway vpn.mst.edu
IPSec ID MoS&TIPSec
IPSec secret MoS&TIPSec
IKE Authmode hybrid
Xauth username myusername
Xauth password mypassword