I am trying to install the cisco vpn client via message #21 #27 in

http://ubuntuforums.org/showthread.php?t=298181&page=3

I have Ubuntu 11.10 64bit

uname -r
3.0.18-x86_64-linode24

uname -a
Linux li155-96 3.0.18-x86_64-linode24 #1 SMP Mon Jan 30 14:25:46 EST 2012 x86_64 x86_64 x86_64 GNU/Linux

where can I get the proper source code?

Did you try the vpnc package first? Reports seem to indicate it doesn't work for everyone, but if it does, it seems far simpler.

Linode builds against the mainline kernel source, and the config of the build can be found on your linode in /proc/config.gz

I didn't know about vpnc.

I ended up doing a very heavy weight solution that worked (but stayed tuned for the big "DUH!" moment at the end):

# on linode
apt-get install ubuntu-desktop vnc4server
vnc4server -geometry 1680x1050 -depth 16

# on local machine
ssh -Cg -L5901:localhost:5901 <user>@<my-linode-address>
# then vncviewer localhost:1

# on linode in xterm window
nohup gnome-session &
# then startup firefox and go to company's password protected vpn http site
# click "start anyconnect client"
# did not automatically install
# clicked on download / save file

# then logout of original ssh -Cg ... window (kills vnc server)
# relogin as root
ssh root@<my-linode-address>
./vpnsetup.sh
# then run vpn client
/opt/cisco/vpn/bin/vpn
connect myaccess.oraclevpn.com

-------------------------

It looked like it connected, but it terminated my ssh connection and I
could not ssh back into the machine.

DUH! Because the network is VPNed now!

I had to log into my linode dashboard and shutdown/boot my node.

Is there a way to VPN out of a machine without killing my ssh connection to the machine?