Is it possible to access a computer located on another local network via Remote Desktop Win10 (need teapot instructions)?

Question

Windows

Actually, everything works fine on the same network, is it possible to somehow use the same tool instead of TeamViewer when the connected computers are located on different networks (via the Internet)?
UPD: the computer to which you want to connect is in the local network behind the MGTS GPON connection.
UPD2: I understand that RD Gateway Server is needed - then the question changes to "what is it and how to do it?"

Answer 1

Can.
Usually, on the LAN gateway of the computer to which the connection is made, you need to do port forwarding (3389 / tcp) in NAT.
But it's better to prepare well for this step - as soon as you open the port, everyone will begin to break.
PS: this is a universal recipe for any services using TCP, only the port number changes.

Answer 2

As already mentioned, using RDP directly will reduce your security. Therefore, make a VPN for your computers and use RPD in it.