Hi NeoUser,
Your idea should be working. You can use either [IP]:[port] or [Internet domain name (not URL)]:[port] ( for example:
www.example.com:32976), then log in to NR server. Next the computer starts, NR client service will automatically connect to your NR server. The information is stored in the Client.xml.
If the Internet domain name doesn't work for you, please try to use the public IP instead to test. If the public IP doesn't work, it means your router may have the hair-pin issue, please setup the Server Local Address of the Connection Option. Take a look at the user manual for more details.
Thanks,
KevinZ - NeoRouter team