MY NAT is Preventing Multiplayer Experiences

I made a post for helping players get together for achievements in Halo: Spartan Assault. Making the post does mean I want to be a part of it also, however my NAT is “Strict” when there are no Xbox Live issues. I would like to know if there is/are any solution(s) to this problem. Thank you.

You have to play with your router settings. Google it, it’ll detail it with packet ratios and whatnot.

Aight.