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Asus RT-AC3200: Port forwarding never works

Hello,

 

I have an Asus router upstairs, and an ISP (Ziggo, Dutch ISP) router/modem downstairs. Whenever I try to port forward, it never works. Everytime I try to host a server (I've tried BeamMP, Raceroom Racing Experience, Unturned, Assetto Corsa), other clients can never connect. Plus whenever I test if my port is open, it says it's closed. I believe I have filled in everything correctly, such as the ports, the internal IP address and the protocol. 

I actually have a funny feeling that either my ISP or the router/modem is blocking the traffic...

Does anyone know any solutions to this problem, I can't see to wrap my head around this problem.

 

Thanks in advance!

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8 minutes ago, alexstuff said:

Does anyone know any solutions to this problem, I can't see to wrap my head around this problem.

Did you port-forward from the ISP-router to the Asus-router and then from the Asus-router to the server?

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Is your ISP modem/router set to a bridge mode so that it acts purely as a modem or is acting as both the router and the modem?

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35 minutes ago, WereCatf said:

Did you port-forward from the ISP-router to the Asus-router and then from the Asus-router to the server?

I only port forward from the Asus-router.
 

 

30 minutes ago, trag1c said:

Is your ISP modem/router set to a bridge mode so that it acts purely as a modem or is acting as both the router and the modem?

It is not set to bridge mode (not that I am aware), It acts as both a router and a modem

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You need to port forward at the ISP router. To make it cleaner you should disable the routing functionality of your Asus device and us it only as a wireless AP and switch basically otherwise with double NAT you're going to run into a host of problems.

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Just now, Lurick said:

You need to port forward at the ISP router. To make it cleaner you should disable the routing functionality of your Asus device and us it only as a wireless AP and switch basically otherwise with double NAT you're going to run into a host of problems.

Alright, i'll try that, thanks!

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