In order to enable access to the Linux GUI, a VNC server is pre-installed on the virtual appliance. To start the VNC server, please follow these steps:
Start a SSH connection to the appliance. For this, a tool such as PuTTY is needed (http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html):
Now you can access the appliance's Linux GUI using a VNC client, such as Tight VNC Client (http://www.tightvnc.com/download.php):
The default connection password is config. It can be changed by issuing the command vncpasswd in PuTTY.
The VNC server is merely a tool to help in exceptional situations where the VM console cannot be accessed otherwise. Due to security considerations it is purposely configured for manual startup only.