How i can get Sessions from my (own)Dedicated Server?

So i have Create a Dedicatetd Server on Linux, ok Create Session and Join to Lobby Works. On the Same Mashine can open the Game Multi found Session. Connection not Work. On a other Mashine dos not find Session.

What Can i do?

Example: RemoteIp: run the Dedicated Server on Linux.
Windows Client → Search only Local?!
I will search and Join Session on Remote Dedicated Server!

is this possible?

Are there any examples or can I help?

My Widget BP