vnc through a Java-enabled browser

vnc server

$ sudo apt-get install x11vnc vnc-java
$ x11vnc -storepasswd
[Opens up ports 5800 and 5900 on your firewall]
$ x11vnc -forever -usepw -httpdir /usr/share/vnc-java/ -httpport 5800

client
visit http://localhost:5800


References
http://lifehacker.com/#!317125/set-up-vnc-on-ubuntu-in-four-steps