1. Install VNC server on Ubuntu Server 12.04
https://wiki.amahi.org/index.php/Install_VNC_server_on_Ubuntu_Server_12.04
vncserver -geometry 1680x1050
2. noVNC (HTML5 VNC Client)
https://github.com/kanaka/noVNC
./utils/launch.sh --vnc localhost:5901
3.