Naenara Browser is the DPRK’s version of Firefox that comes built into Red Star OS, the official operating system of North Korea. I recently got my hands on Naenara Browser version 3.5. My first impression in playing with it is that this is one ancient version of Firefox.
http://blog.whitehatsec.com/north-koreas-naenara-web-browser-its-weirder-than-we-thought/