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SSH & X Forwarding

Written by at March 8, 2012

In modern system, many administration task will rely on the GUI. As you may using remote desktop in M$ Windows environment. Or you may using VNC in X. Or you may using ssh to forward your X display from server to client, your local machine.

  1. Ensure X11Forwarding is enable in the ssh server side. e.g., /etc/ssh/sshd_config 
    X11Forwarding yes
  2. On your local machine run: 
    ssh -Y user@outerspace.example.com
  3. After ssh to outer space machine @example.com, you could run any X application and the display will be render on your localscreen, e.g., 
    xclock &

You could ssh -Y to host A first and futher ssh -Y to host B. Running X application on host B and the display will render on your local machine, too.