X11 ssh tunneling

Starting up a GUI app to your local machine is fairly easy. You start out by connecting via ssh with just one extra option.

ssh -X example.com

Then you start up an X11 application.

xeyes

If you have problems with this just turn on verbose ssh messages when you connect (-v for verbose), and that will probably tell you what is wrong. But you probably only want to turn this on when you are troubleshooting as it generates a lot of visually distracting messages.

ssh -vX example.com