Tunnel your X server traffic to remote X clients using an SSH

Tunnel your X server traffic to remote X clients using an SSH



To configure a remote X client without encryption, you can use the
following procedure:





1. On the remote X client, enter



   xhost +X_server_hostname



   This tells the client to accept connections from the X server.





2. On the X server, enter



   DISPLAY=X_client_hostname:0.0



   and then enter



   export DISPLAY



   This tells the X server to display its output on the remote X client.






3. From the X client, use the ssh client to access the shell prompt on
   the X server and then run the graphical application you want displayed
   on the X client. For example, you could enter gedit at the shell
   prompt to remotely display the gedit text editor. You could also enter
   office at the shell prompt to remotely display the OpenOffice.org
   suite.







Encrypted

This procedure works, but all the X traffic is transmitted
unencrypted. This isn’t good. Instead, you should use SSH to tunnel
the X server traffic between the X server and the X client. You can do
this using one of the following options:




On the X client system:



• Use the –X option with the ssh client program.




• Set the



  ForwardX11 



  option to a value of




  yes




  in the




   /etc/ssh/ssh_config 





    file








On the X server system:





Once this is done, you then need to set the




X11Forwarding 




option to





yes 





in the





/etc/ssh/sshd_config 





file






Encryption IV