You need to install ngrok to connect to other players.
For installing ngrok, go to https://ngrok.com/download and follow the instructions. Remember to create an account for the second step, adding authtoken.
After isntalling it, we can start a tunnel on the internet with the following commands:
For http protocol:
ngrok.exe http portnumber For tcp protocol: ngrok.exe http portnumber
For more details, view the video on the following link: https://www.youtube.com/watch?v=hs7GLsHQCPQ&ab_channel=NeuralNine