if you want to utilize an ssh tunnel to access a remote vnc site then you's do something like "ssh -L 1234:127.0.0.1:5900
user@home.com" once you're logged in, if you connect to port 1234 on your local machine, i.e. 127.0.0.1:1234 then that goes down a tunnel and is sent to 5900 on the remote machine.