How to completely turn off the Internet?

Question

Computer networks

You need to completely disable the Internet on the PC. But it must be connected to Wi-Fi. How to make sure that no site can be opened from a PC without turning off Wi-Fi?

Answer 1

Set the Windows firewall to "block by default" and add only those addresses to the white list that you can go to.

Answer 2

Manually configure the wrong gateway with static
- this is fixed by reconnecting to wifi

Answer 3

Alert: the link is a machine translation, the original was not searched.
How can I restrict windows 7 to use only...

Answer 4

Specify something non-existent as the default gateway.