os: xubuntu 24.04
firewall: ufw
torrent program: transmission
On transmission I opened port 51401
On a terminal I executed sudo ufw allow 51401, which opens both tcp and udp ports for both ipv4 and ipv6. This is called forwarding, right?
I’m following https://github.com/transmission/transmission/blob/main/docs/Port-Forwarding-Guide.md but apparently I still don’t get it
ETA: thanks for your input, issue has been solved
Check if your ISP uses CGNAT for IPv4. If so, then you’re out of luck and IPv4 pretty forwarding will never work.
See if your router has an external IP in the CGNAT 100.64.0.0/10 range.
If you have IPv6 you can add a firewall rule to your router to allow the forwarding port through and at least have other IPv6 peers connect.