Master sever questions.

Questions & Answers
1

How would I set it up?

Does using this:
http://docs.unity3d.ru/Components/net-MasterServerBuild.html

ACtuly work?

And how would I make servers hook up to master server, anddoes this make it easier for others to be able to connect, especialy outside networks?

2

Yes it does work, better than the master server offered by Unity to test a new game.

Personally I followed this tutorial to set it up. To use it, you can use the same methods detailed in the documentation.