[Help]My Friends can't play?o.o

Hey Guys, Im using hamachi i changed all the .ini Login,Character, World , neuz to my hamachi ip, And yes they are in my hamachi networks.. i am in them too.. but why only I can play? .. As i know if you need hamachi there's no need of using PortForwarding so whats the problem? Answer fast please :huh::?:

double post XD

make sure they put your hamachi ip in there neuz.ini as well, if not they cant connect to your server.