serial port forwarding/virtualisation?

Question

I have a python script(UBUNTU) reading and writing info from local serial port.It works fine! what if instead of using the local serial port , i want to use another machine serial port, remotely ?

how would you implement this:

-between 2 ubuntu machines?

-between 1 ubuntu and one windows machine?

its not so simple to explain so i made this little diagram

enter image description here

Answer 1

between 2 ubuntu machines

Serial Over IP

between 1 ubuntu and one windows machine

Ubuntu ser2net, Windows HW VSP3

Answer 2

the most generic way I can think of is by reading the local serial console, and redirecting it to a netcat port. then on the receiving side, a netcat listener, or python itself, can pick up the datastream