So years back, (8 or so ) i was able to run a home-made l2j server just for some friends with my dynamic ip. Developers nowadays keep claiming i need to have a static IP for the ports to work.
I just forgot the process but i'm sure i can do it with a dynamic ip. The thing is , my current router list my ports as CLOSED even if i port-forwarded every port needed for Lineage 2.