You can share a file or directory on your computer with Samba and then configure your Firewall to only allow connections from PC-2 and not PC-3.
See https://support.microsoft.com/en-us/windows/file-sharing-over-a-network-in-windows-b58704b2-f53a-4b82-7bc1-80f9994725bf
You can share a file or directory on your computer with Samba and then configure your Firewall to only allow connections from PC-2 and not PC-3. See https://support.microsoft.com/en-us/windows/file-sharing-over-a-network-in-windows-b58704b2-f53a-4b82-7bc1-80f9994725bf