I managed to get vpnc to work with Nortel Contivity VPN server through my company's wireless lan on my N810.

This is what I did:

1. Install the vpnc package by Michael Arndt from maemo.org.

2. Make a couple of changes related to xauth type to the merged vpnc source code published by Volodymyr Buell at http://www.gossamer-threads.com/list...2281?page=last
since my company does not use SecureId for Xauth .

3. Compile the source code under maemo scratchbox sdk environment. Replace the vpnc binary under /usr/sbin on my n810 with the one I compiled.

4. Edit a default.conf file with VPN server, group name/password, user name/password and put the file under /etc/vpnc on my n810.

Then just run "vpnc" in xterm after "sudo gainroot". It works great. No more complaint to the tablet.