Ports not Forwarding

[FiftyCal]

Hello,

I am trying to forward some ports on my DD-WRT router but it doesn't seem to be working.

If my issue is likely DD-WRT specific, then I will go to their forums, but for now I'm going to assume it is a general network/internet problem.

 

I want to forward ports 8677 and 27016 to my game server located at 192.168.2.112 on my home network. I set those up like in the first attached image.

Then I went to yougetsignal.com on my desktop computer to check to see if the port is forwarded. It says it is not, like in the second attached image.

 

What are some possible reasons why this isn't working?

 

Here is some additional info:

I think I set the source port correctly, from multiple sources it seems like I could leave it blank, set it to 0.0.0.0 or set it to 0.0.0.0/0 and it would work just fine. I tried those.

I restarted the router after setting those settings.

I set my ISP's router/modem to 'bridge mode' which gives a WAN IP address to the DD-WRT router, so I don't think I have a double NAT problem.

I also checked that the game server isn't accessible in the game (Space Engineers) through the public IP address; it is accessible on the LAN at 192.168.2.112:27016.

 

Thanks in advance for any help on this issue!

[Sant_HH]

Are you sure your ISP isn't using CGNAT? An easy way to check is look at the WAN IP on your router (top right corner on the config web gui) and google "what is my ip" if they don't match, your ISP is using CGNAT meaning you can't do port forwarding

[FiftyCal]

1 hour ago, Sant_HH said:

Are you sure your ISP isn't using CGNAT? An easy way to check is look at the WAN IP on your router (top right corner on the config web gui) and google "what is my ip" if they don't match, your ISP is using CGNAT meaning you can't do port forwarding

Thanks for answering, but all those grey boxes you see in the screenshots are the same IP address. So both my router's WAN IP and the result of www.whatsmyip.org are the same. Is it possible ISP block port forwarding in some other way? Maybe I could ask their customer support.

 

But I still don't know if it is an ISP problem or just some setting that is misconfigured or what. Thanks for the attempt at a solution! Much appreciated.

[FiftyCal]

An update:

I was just able to enter the game server from another public IP address (I tethered to my phone's data).

However, yougetsignal.com still said the port wasn't accessible on my home network's public IP address. Clearly it should; I accessed it over the internet.

 

So if there is any explanation for that, that would be great. My issue is *technically* unsolved because I want those port testing thingies like yougetsignal.com to actually give me useful information. But I am happy because my original goal is accomplished: have a public facing game server.

 

Who knows if more ports that I forward in the future will actually work and work consistently.

[Sant_HH]

Did you allow the port in the windows firewall setting?

Here's how to do it

1. Go to Control Panel ->System and Security ->Windows firewall
2. Go to Advanced settings on the left pane
3. Select inbound rules ->new rule
4. In the wizard select port
5. choose TCP or UDP and type in port 8766
6. Select allow connection
7. Give it a name then click finish

Then repeat for port 27016