If you have saved a session, you can now simply launch PuTTY and double
click the session which we called www.cmbi.kun.nl_TUNNEL
here, see Fig 1. You will be prompted for your CMBI
username & password. Now you must type echo $DISPLAY (see Fig
3) to find out the tunnel display name (eg
localhost:13.0). This information will be needed on the website.
The Running Tunnel: finding out your X Display address