(EN) Independently check ports inside & outside your network
If present, the docker container needs to be stopped before you try this.
Download and install nodejs from https://nodejs.org/en/download/
(windows installer msi)
(you don't need the chocolatey addon option)
In explorer navigate to c:\users\yourname, on the view tab, tick "file name extensions"
on the home tab, "new item", text document change the name to ports.js
open notepad, open ports.js paste the code from this page
https://nodejs.org/en/docs/guides/getting-started-guide/
change hostname for internal ip of your computer
change port for 31400
open command prompt go to c:\users\yourname
C:\users\yourname> node ports.js
it should say server running at ...... (information you changed)
In a web browser go to http://yourcomputerIP:31400
If you get the page hello world, the server is working.
With another computer or mobile phone in your house on your wifiyou can run an intermediate test
In a web browser go to http://yourcomputerIP:31400
If you get the page hello world, the port is open and working inside your network at least.
Find your external ip at https://www.whatsmyip.org/
Go to this website https://hidester.com/proxy/
Type in the address http://ipaddress-from-whatsmyip:31400
If you get the hello world page, your port forwarding is working from the outside world.