L2J Server

hello how are you guys !?
i wish that all of you have a good day.

i do have a little problem with letting my friend connecting to my L2J server
i create it as i am the only one who will join it
but i let them join by modem connection and it works
but when they try to confirm logging in the server
they can't they can register and every thing but they can't confirm logging in
so what's the problem !?
( maybe i need to change it to the international ip *from localhost to international* )
if that is the problem idk how to change it so please help me with that

***** i can join and create chars and play as GM and every thing from my pc that the server works from
and i gave them the full clinet that i use but i change the ip in L2.ini to 192.168.1.* and that's my ip in the modem.

Hello and happy new year my friend!

First of all if you want ppl/friends to join your server u need to do some steps and it depends on soem small issues, i'll give u some reasons why they cannot log!

1)Antivirus & Firewall:
make sure that u got rules in firewall and on antivirus firewall too or close the anitvirus
2)u should create a no-ip host and and 2nd system that it's for ppl to join your server cause the 1st system is only for you with the 127.0.0.1.!
in the 2nd system just put the no-ip host u created and share to your friends! (also dont forget to configure the ipconfig.xml!)
3)open the ports on your router/modem!! it's easy and not hard to do if you still can't manage to open them by yourseld call your provider and ask them!