#rev 2018-10-09 schadavi

= How can I connect to X-servers via Putty SSH client? =

=== Connection with VNC and SSH Port Forwarding through an SSH tunnel ===
'''Initial Steps'''
 1. Use Putty to login to your Linux box/server.
 1. Launch a vncserver{{{
vncserver -geometry 1920x1080    # The first time you will be asked to set a VNC password
}}}
 1. Remember your session number. In the example below it is number '''1''':{{{
New 'X' desktop is mylinuxbox:1
}}} Now you can exit your Putty SSH Terminal

'''Tunnel Setup'''
 1. Open the PuTTY configuration window again
 1. Go to '''SSH''' >> '''X11''' in the left part of the window
 1. Check '''Enable X11 forwarding'''
 1. Go to '''SSH''' >> '''Tunnels''' and enter Source port: 590'''1'''. Furthermore add the following Destination: 127.0.0.1:590'''1'''
 1. Go back to '''Session''', enter a host name and a session name under "Saved Sessions" and click at "Save".
 1. Now start your VNC client and point to 127.0.0.1:590'''1''' and enter your VNC password from above.
 . Once your work is done and you would like to disconnect, enter the following command in a terminal on your Linux box/server{{{
vncserver -kill :1
}}}

(!) In case of other running VNC servers, your session number could be higher than ''':1'''. In this case, go again through all the steps from above with the current session ID and change all numbers written in '''bold'''.

For a more detailed HowTo, please have a look at [[FAQ/VNCUsage|VNCUsage]]<<BR>>
Alternatively, you can write us an email to support@ee.ethz.ch requesting a X-Server for Windows (please mention your computer).
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[[CategoryWNCL]]