Having to restart router after putting x1 in dmz

Does the router offer DMZ? If so put the X1 on a fixed I.P. with the router and put that I.P. in the DMZ zone. That should offer the one device a clear shot to the internet with no ports blocked at all. If you can do this un-do any port forwarding i.e. maybe
even put the router back to defaults and then proceed to DMZ.

ok after having my xbox 360 in dmz i put the one in dmz still strict nat took it back out got an open nat shut xbox down and restarted now i have a moderate nat says its behind a upnp port restricted nat have turned upnp off rebooted router turned upnp on
rebooted router rebooted xbox one still moderate WTH

If you have a static IP for the x1, you can go into the router settings and place it in the DMZ.

I'm from Brazil and after update my NAT type in Ghosts is MODERATE while in Xbox System OS is saying OPEN.

I already put my X1 in DMZ AND open ALL PORTS (include 3075), reset modem, cold reset X1, change ip address, change router port, but my problem persist.

I can't play with Brazilian Room, only foreign room.

I did give it a static IP and I didn't restart the router straight after I put the Xbox into a DMZ but I have restarted it and it still shows the same values. Unfortunately I can't connect via Ethernet because the router is in a different room. I also forgot
to add in the beginning 2 other PlayStations are also using the same network but I still have the same problem even if they are both off, thanks.