Unity is it possible to use Unet for the global network?

Question

Unity

Unity is it possible to use Unet for the global network?
so that I can connect to other PCs from other countries there
without the help of Hamachi and other things

Answer 1

How would it be easier to explain
in order to connect one computer to another directly - it is necessary that they have "visible" addresses.
Hamachi and so on - just solves this problem, sorting out routes and helping to connect devices "hidden" in subnets. (very conditionally)
Unet is an api for the convenience of handling network entities, and it will work when "visibility of each other", but there are no ready-made tools for creating this "visibility". But nothing prevents you from screwing it all up yourself.
I hope it's cleared up a bit! These are still slightly different things establishing a connection and working on it.