Tutorial How To Fix NAT/AE :
I. You get NAT because your router blocks the GunZ ports and you have to unlock it.
- You can try to PORT FORWARD.
http://www.portforward.com
There; you have to choose your router model and the game/program you want to portforward. In this case we want to PortForward Gunz.
* This does NOT work for me. I have an Edimax Br 6214 K.
* Portforward.com provides you tips 'howto' portforword GunZ on every Router Model.
II. Go to your routers' main page (Default is usually: 192.168.2.1 - depends of the model of router) and disable Firewall/NAT. If you can't disable.. use DMZ HOST.(This unblocks all of your ports)
* I recommand to use DMZ Host. It does not unblock just gunz ports, it opens all your ports.
How to configure DMZ HOST.
Step 1: Go on Start->Run->Type "cmd" -> Then, once the BIOS comes up, type in "ipconfig". (Without the quotation marks)
Step 2: There you will see an IP Address (My router provides me:192.168.2.100) *Depends on every Model
Step 3: Go on your router main page (Mine is 192.168.2.1)
Step 4: Log in.
[List of default router passwords - Thanks TO Xemji ]
Default is:
User-admin
Password-1234
Step 5: Search for "DMZ Host".
Step 6: In there, put the IP that the router gives you.
Step 1 and Step 2.
Step 7: Tick enable then press "Apply" or "Ok". Now you are done.
Step 8: Enjoy playing gunz without getting NAT.
If you connect through a modem or you connect directly to the Internet.
III. If your computer connects directly to the internet(No Modem/Router) and you
get NAT / you find out that your ports are blocked (Ex:Bitcomet), contact your ISP (Internet Service Provider) and tell them to open your ports.
IV. Disable your Firewall. (From Windows/Anti-virus.)
https://freestylersworld.com/showthr...-To-Fix-NAT-AE
UPDATE:
Saw him ingame talked with him used teamviewer and
put his pc in dmz myself also optimized his pc for performance.
The guy has no more problems 
Tutorial How To Fix NAT/AE :
