How to tunnel VPN over SSH
Today I had to use VNC to debug a remote machine, but firewalls were blocking VNC ports.
After I failed to get my VNC client (Chicken of the VNC) to use a SOCKS proxy, I was able to use SSH port forwarding to get it working. On your local machine type:
ssh user@remotehost -L 5900/localhost/5900
This forwards port 5900 on localhost to port 5900 on the remotehost. Then in Chicken of the VNC, open a new connection to localhost. That’s it! EEZ!
It turned out that Xorg was eating all available memory and invoking the oom killer. Sigh.
I guess I could have figured this out without VNC, but I couldn’t reproduce the bug locally, so I watched as a remote user was working on the machine.