How do i change my nat type from strict to open on a linksys befsr41 router i've tried all the solutions xbox live and bungie has told me to try except for buying a different router or changing service providers... -_- i've reset my modem and router i've enabled upnp on my pc but i can't find upnp on my router web page thing and my dmz thing doesn't show any options at all barely and i find guides for the same router and operating system and yet their router web page has twice as much information and options and i'd really like to get this fixed b/c i've spent almost 2 hrs searching the web to find solutions that didn't even work

I have the same router and the info acertempest gave you should work.

However, in my case, I found it did not work. I had to go under applications and gaming, select Port Rang Forwarding and then open the following ports:

TCP 80
UDP 88
UDP 3074
TCP 3074
UDP 53
TCP 53

Once that was done, I had to configure one of the gamertags to automatically sign in to Xbox Live (as crazy as that sounds) when the console is turned on.

Under applications and gaming, you will want to select upnp forwarding and then you can enter whatever custom application you want to be allowed in or out.Upnp can also be set automatically from the Administration menu.
You will need to know which ports to use, usually you can get these from the software developer, such as bungie. You can also use the application name, but I find the numbers easier to work with.

I have a thompson router any help changing nat type from strict to open?