Connect two computers on different networks using a computer that is on both networks

Question

I have three computers on my network: computer_1, computer_2, and computer_3.

Computer_3 can access computer_2

Computer_2 can access computer_1

I need to access Computer_1 from Computer_3 but Computer_1 and Computer_3 and one separated networks and I can't connect them using a switch or something physical.

Computer_2 has two network interfaces.

How can I do it?

I think to use a proxy or a http tunnel, but I have no idea how to enable communication between computer_1 and computer_3. Or maybe a program running on Computer_2 that redirects Computer_1 requests to Computer_3 and return its responses to Computer_1.

I need to access a web service running on Computer_3 from Computer_1.

All computers have Windows 7 64 bits.

Maybe I can do from Computer_3 this call: http://Computer_2/WebApi, and then Computer_2 redirects this call to http://Computer_1/WebApi.

Answer 1

You have at least the following options:

• Configure computer_2 as a router and configure the other computers to use it (e.g. set up static routes)
• Create application specific relaying using something like an application-proxy or netcat or socat

The first option is the most general.

I'd search this site and then the intertubes for something like "configure routing on Windows 8.1" - substitute your O/S.