Enable Java in Firefox Ubuntu

I’ve been trying to get Java applet working to be able to remotely access my UCL desktop through Oracle Secure Global Desktop Web Server

Googling around seems to get me to the answer that it is not possible to get it working with Chrome as it has changed its policy. However, it’s possible with Firefox

Instructions on Java website aren’t helping at all

Here’s how I made it to work:
http://askubuntu.com/questions/354361/how-to-install-the-java-plugin-for-firefox

sudo apt-get install icedtea-plugin

then go to about:addons

You should have IcedTea-Web Plugin (using IcedTea-Web 1.5 (1.5-1ubuntu1)) on the plugin list and it’s not enable

Change it to Always Active and restart browser
It should work fine now 🙂