You don't need a router. If you set the subnet mask on all of the PCs to be 255.255.0.0, then they should all be able to ping each other. Basically, opening up the subnet mask puts all of the PCs on ...

I tried simplifying the problem statement, it appears to be counter productive. So here is the full story. I have a server (A) behind NAT, in a country that blocks a lot of websites and performs DPI.

If your Wi-Fi often feels like it's stuck in traffic — too many devices, too many users, and not enough bandwidth — you've probably wondered: Is it possible to have two different Wi‑Fi networks in a ...