Need help !

Hey guys , i lately started an aion private server , i could login but how can i make my friend log in ?!
I got team viewer for making it more convience .
Thanks.

please give us more informations.
What OS is your friend running?
x32, x64?
Which aion private server do you want to play on?
Which aion version is it?
Does he get any error messages?

Well , my friend is running XP 32
2GB RAM
Dual-Core proccessor
512MB GPU ,
and i am TOTALY new to the server thing , i made the server , i got the files , i made it , i logged in the server , i just wanna know how he can he log into it .
Thanks for replying me :) .
oh and its 2.5 , we tried one time but my server crashed ( i edited some config properties , i probbably crashed it heheheh ) .

ok. so he has no problems, it was the server that crashed?
he got no error message?
which server software did you use?
did you use any tutorials to configure it correctly?

Well , iam using Navicat , MySQL 8 , and server files from another forum ( i dont know if its legal to post it here ) , i used a tutorial and i managed to log in ( as the tutorial was for localhost use ) , my friend tried to log in , when he type the passworld and account ID , i get a notification , in Navicat i see his account , when he chooses the server , he get a message that something is not authorized , and another message when i modified server files " Cannot Connect to server " .
i just need one thing , get a team viewer , and remote my pc , and make me the server with the configs , cuz i deleted it , cuz i crashed it :) hheehhe

{iam getting a message now that i cant connect to server !!}
I RESETUP THE SERVER AND nOW IT WORKED , but please guys anyone can tell me how i make my friend connect to me .