Vnc Server on display :0 (debian way)

1. Install the "vnc4server" package (universe). This will provide
"/usr/lib/xorg/modules/extensions/libvnc.so" (The vnc.so module for VNC
4.1.2 was changed from vnc.so to libvnc.so.)
2. Add "vnc" to the Module section in /etc/X11/xorg.conf
Section "Module"
...
Load "vnc"
EndSection
3.a.If your VNC server is running in a secure environment, you can
disable authentication with the following configuration:
Section "Screen"
...
Option "SecurityTypes" "None"
EndSection
3.b. If your VNC server is NOT running in a secure environment, you will
need to set a VNC password using the vncpasswd program:
# vncpasswd
Password:
Verify:
Then tell the VNC module where the password is stored in xorg.conf:
Section "Screen"
...
Option "SecurityTypes" "VncAuth"
Option "UserPasswdVerifier" "VncAuth"
Option "PasswordFile" "/root/.vnc/passwd"
EndSection
4. Logout and restart X (Ctrl-Alt Backspace)