All newest version of the downloads and new installation. I am running RUServer and it all appears to be correct. Hosts show up on the server with the correct Internet-ID, I can connect to the server as admin from any client, 5655 & 5670 are reachable from the outside. All looks set to go.
When I configure a host computer it gives me an ID, blue dot, and shows up on the server as idle with the correct ID and name.
When I configure a client computer with the correct ID it shows as online. However, when I try to login it does not prompt for a password and immediately gets placed in the offline list. Ten seconds later it shows online again. No error messages.
I have gone through EVERYTHING I can thing of - turning firewalls off on both ends, no anti virus, etc. and looking for some new ideas. Probably missing something obvious but at this point I have NO idea what.