Can others Join my server through lan?

[SethZ]

I was wondering if other could join my server through Lan using port forwarding or anything. My friend can get in game and i get the 1017 error or i have to change the worldadress to localhost then i can get in but he gets the 1017 error. also if he does get in when he tries to load a zone it just boots him out... is this possible? or do i have to put my server up on EQEmu and join there? Thank for any help. (also if you could point me to the thread that tells me how to do that..its probably a sticky heh to tired to check ill do that tomorrow though i could find anyhelp on my question,) thanks