I connected the screen sharing stuff now.
So, the actual issue is that his ISP blocks ports and had to previously get them to open 25565. The forwarding works but it wasnât getting there because of the modem (controlled by the ISP) or ISP blocking them.
If youâre not the only one who smelled something fishy this whole time, youâve got a good nose.
@ElPres and @Niels_Hanssen helped me out, with Niels ruling out the possibility of a firewall issue and ElPres, after hours of work, pinning it on the ISP (and their obnoxious custom of locking everything). Iâll call up the Customer Support in the morning (oh wow itâs almost that time again; 23:53) or maybe the upcoming Thursday or Saturday or something.
I just need them to set it up exactly like my 25565 Minecraft port.
You could consider, asking them to open up the whole range. So you can use your own firewall to block everything, except certain ports.
My ISP is lousy. Goodness. I still havenât gotten them to open 10000 and 12321. Theyâre gonna hear it tomorrow.
Ask them to open everything and youâll manage it with your router
The reason ISPâs donât open everything is because they donât want you to run these services, ever. Iâd be very interested to find out if his ISP said âSure, all open, have funâ
In Australia I donât have this issue.
Some apps need port triggering to be set in the router. It solved the issue for me. It works the same way as port forwarding. You set your port and protocols and thatâs it.