How to forward a route to the local network?

Question

Network routing

Good afternoon!
The whole essence of the issue is set out in the header and in the diagram of the figure.
There is a common company network (global) and a local network (local) is raised in this network, which has a router that has an address both in the local and global networks. And there is one computer in the global network and one in the local. I need to find a way to get through from a computer in the global to a computer in the local network. To be honest, I do not quite understand what needs to be done for this. Apparently, in the settings of the router, it is necessary either to configure route forwarding, or port forwarding. I do not get you.
Even after reading the answers here, it still didn't get any easier.
How to forward the Route to the local network?

Thanks in advance!

Answer 1

if access is required only to some particular service on a computer in the local network, then as a rule the easiest way is to forward the required port or ports on the router. what you need in your case - depends on what you need in the global network from this computer. how to forward a port depends on the router model.