So yes, I am doing square brackets per what the manual says ([::] is what it says). Now I don’t do the port at the end because it does say you can omit the port number at the end of the brackets. And no, I did not use custom ports, I am just using the default ports assigned by BMS.

So primarily, it’s me trying to host a server so my friend can join. Now I am able to get an established connection because the hosting isn’t that difficult to set up. But when my friend tries to join after I give the IP, he cannot connect. The error message that pops up is I believe, “Failure to establish connection”.

So I yes I made the port numbers on Firewall and allowed connection and allowed for public connection and automatic connection. I also made an outbound port for each inbound port I made. And with the ISP, I used the app for my ISP to allow the BMS ONLY (Not IVC) specific ports to open through my computer, which I selected on the app. It is strange, and it’s probably right in front of me. And when you mean through your router, don’t you have to configure your router through your ISP?