Can't be true!

[Bonsaihero]

Hey all!

I need help, now i've bin ignoring for a long time that people outside cannot see my server on the main list! But if i give my ip to my friends etc.. they can join and play easly. So i am asking you guys, why is it like that? It can't be true - must be some way. Do i really have to buy a new router? Isn't there any way to fix it? I have a ZyXel 2602. If i have to buy a new one, can anybody tell me which one will work 100% ?