Can we develope a security wall for network is this possible

Question

Yes or no

Answer 1

Click on the start button, and select "Network and Sharing." Select "Windows Firewall" in the lower left-hand corner. Windows firewall should open. Make sure that Windows firewall state is on and that all incoming connections are blocked.

Answer 2

Yes It is absolutely possible.
Haven't you heard about firewall. That is it!