I have followed some tutorials but none have worked. 

What I have tried is:

1. Go into my router and select the aplications and gaming tab, then clicked port range forwarding.

2. I then entered the ports I wanted to open, I got the ports from the xbox website.

3. I entered my Xbox's ip address and then clicked teh enable box

4. I clicked save settings

This hasn't worked, when I test my Xbox's connection it says my NAT settings are on moderate, I want my NAT open.