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Nat open, but only activating DMZ!?


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PuttoMan

Hi guys. 😁 Usual Nat problem in GTA Online. I play on PC.

 

So, my router is a technicolor TG789vac_v2.

I disabled Windows Firewall and router Firewall.

 

I activated uPnP, NAT is strict.

I opened TCP and UDP ports for GTAO, NAT is strict. (I checked if ports were open)

 

I activated DMZ, NAT is open.

 

I know that DMZ is a dangerous way. 

DMZ is a way to by-pass NAT and firewall rules of my router.  Supposing that I opened ports in right way, I think the problem is created by router Firewall.
In game, opening Social Club->Network Info, I see my public IP and don't see UDP 6672 port in listening. So NAT is strict.

 

When I activate DMZ, in Social Club I can see my public IP -> [93.00.00 ... : 6672], and the NAT is open.

 

It seems that, only activating DMZ, my router listens to 6672 UDP port. But if uPnP is enabled or I forward the right ports, NAT becomes strict again.

 

I attach 2 photos to help you understand my issue.

 

https://drive.google.com/file/d/1xJMWrhbyPjC7Agisd2hYjjb2pOtdwphy/view?usp=sharing

 

https://drive.google.com/file/d/1Faf8UFwJLs8ohIl681wSFA8he68DZsts/view?usp=sharing

 

Thank you! 😄

 

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Gridl0k

Don't put a PC in your DMZ

 

That's the post

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Gridl0k

Your strict NAT happens on a port 59691, not sure what that's about, you should forward these UDP ports (only) for GTA:

 

  • Port 6672 (UDP)
  • Port 61455 (UDP)
  • Port 61457 (UDP)
  • Port 61456 (UDP)
  • Port 61458 (UDP)

 

What does your router show for active uPNP/teredo ports from your PC when active?

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