How to encrypt connections of a specific program?

Question

Encryption

Hello.
How can I encrypt the connection of only a certain program or port between computers on a local network? The program itself does not have an encryption function.
OS Windows 7 SP1 Professional x64.

Answer 1

www.proxycap.com
1. Set up Windows OpenSSH on one of the machines.
2. Set up SSH Tunnel:
3. Set up a rule for the program:
4. Connect: