How to restrict access to a computer on a local network for certain IP addresses?

Question

Computer networks

Good day!
There is the following situation. The office center uses a wi-fi router (that is, I do not have access to it) to all offices (companies) on the floor. How can I organize access to the shared directory on my machine only to certain users (within our company office)? I tried to create a rule using the Win 7 firewall for incoming connections (for some IP addresses), but for some reason nothing happened.
Thanks in advance for your reply!

Answer 1

Generally in Windows the policy is configured not for computers, and for users. then it makes sense to indicate which user you trust to read-write-view on your resource.

Answer 2

I understand all computers through public wi-fi. I recently did a similar task with Hamachi
. Up to 5 users-free. After installation, I configured it at the request of Google: "hamachi step-by-step setup"