To start an X-window session from a remote machine named draco.physics.utah.edu, use the command
ssh -X <username>@draco.physics.utah.edu
-X requests X11 forwarding so you can launch and display
other windows from the remote machine. You are then prompted for your
If automatic X-forwarding doesn't work, you may need to set
permissions to launch X sessions. Here is how to do that. Suppose
your local machine is called myhost.mydomain.com. You first
need to tell your local window manager that draco.physics.utah.edu has
permission to create windows and you have to tell physics.utah.edu where to put them. In this case, start your session
and after you log in, type the following command:
setenv DISPLAY myhost.mydomain.com:0.0
Then if you type emacs, for example, the emacs window should
appear on your local machine. Depending on the speed of your connection
the emacs display may be acceptable or too slow.
Security note: If you don't use automatic X-forwarding, any X session
you launch is not encrypted. The security concern here is that you
launch an xterm window and then type a password in it.
To end your session, type exit or logout.