login problem

[Flake0207]

ok here are the steps i have done
i have a dedcated server comp
and i cant login in from another comp using the same router or network which ever u prefer
but players can login

my realm config has one realm with external ip
ive tried makin two realms one with external and one with internal and i try logging in on my main comp(not server comp) and it wont let me past realms
everything starts up ok lets me login but not past realms

+Rep to who ever can help sad problem probably the noobest problem but its got me

[AngelSandy]

Usually people goes wrong at this step, because they put the External and Internal IP's wrong in the configs.