I think you need a DNS address. You can get free ones e.g. https://freedns.afraid.org/ ( first one I found on Google and do not know anything about it ).
I had it set on 127.0.0.1. I have changed it now to 0.0.0.0. The port is set to 27016. However, it still don’t work. I removed the windows firewall for a few seconds and gave it a try, it didn’t help either. (I should also mention that I visited my address from a mobile device. If it matters)
That looks like it should work. Maybe check with a different web server first, like Apache, to make sure the port can be reached on a server that’s known to work first to check whether the problem is with your server or your network setup?
Alternatively you could try your server on a cheap VPS somewhere which would be connected to internet directly, so it’s easier to check.
"Virtual DMZ allows you to expose one computer to the Internet, so that all the inbounds packets will be redirected to the computer you set. It is useful while you run some applications that use uncertained incoming ports. Please use it carefully.
The computer in the DMZ is not protected from hacker attacks.
To put a computer in the DMZ, enter the last digits of its IP address in the field below and select “Enable”. Click “Apply” for the change to take effect.
|The wireless router currently uses a private WAN IP address (192.168.x.x, 10,x,x,x, or 172.16.x.x).|
|This router may be in the multiple-NAT environment and DDNS service cannot work in this environment.|"