+grml vnc=password Start VNC server with startup of X.org and sets the password to the specified
+ one. To automatically start the VNC server use the startx bootoption.
+grml vnc_connect=host[:port] Connect to a listening VNC client ("vncviewer -listen" reverse connection).
+ Can be used to connect from devices behind firewalls as connection is
+ initiated from the VNC server instead of the VNC client. Has to be
+ combined with the vnc bootoption.
+ [Note: only available since release 2011.12]
+