ssh from the corporate workstation to homebox (hal.compute.info) then from home, enigma, ssh to localhost port 5000 command to run on the corporate box (assuming user tunnel exists on hal.compute.info)

$ /usr/bin/ssh -R 5000:localhost:22 -N -f tunnel@hal.compute.info

command to run from home computer

$ ssh -p 5000 localhost

To create a permanent tunnel put the following in /etc/inittab after passwordless ssh is setup from the corporate computer to enigma.

k1:2345:respawn:/usr/bin/ssh -R 5000:localhost:22 -N tunnel@hal.compute.info