Even though you have put pretty strong security on the wireless network, in some cases it helps if you still wants to completely lock down certain computers from accessing it. Unfortunately, there is no easy tool built-in Windows that can easily do that for you. You will have to go through the cool command line to make it happen. And this time, we will use netsh command line from the Command Prompt window. Let’s say we want to block a computer from accessing a wireless network SSID “home”. Here is what we can do: First, open Dos Prompt window as Administrator on the machine you want to block the access. Then, use the following command to block the access.
netsh wlan add filter permission=block ssid=home
After that, you can use
netsh wlan show filter
netsh wlan add filter permission=denyall networktype=adhoc
That’s it. Isn’t that hard?