NAT connection is slow. How to change it?

When I play matchmaking is says my NAT type is slow something? How do I change that?

> When I play matchmaking is says my NAT type is slow something? How do I change that?

It should be Open, if it’s Strict, Moderate or Closed it will take longer to find players and in most cases you wont find players at all so you need to set it to Open.

https://forums.halo.xbox.com//yaf_postst38708_How-To-Improve-YOUR-Connection-and-Open-NAT.aspx