How to turn off the Internet via wifi on the router / the router itself?

Question

linux

I tried aireplay-ng -0 0/--bssid -a [mac:] -c [mac:] wlan0mon/wlan0 - only the smartphone was disconnected from the network .
- Interested in that the PC does not have access to the Internet (like a smartphone in the description above)
- The router is connected to the PC.
- I work from a flash drive on linux live on a laptop via wifi.
If there are alternative suggestions, such as hacking wifi and accessing the dashboard (although you will need to find out the password and login if the stock ones have changed ...), then drop the links or tell me something.
A neighbor yells at night playing online games and no words and a district policeman are a hindrance to him. And nobody wants to understand.
PS Please explain in more detail (like I'm 8 years old) - I'm a noob so to speak. Or leave links / commands if it is not possible to describe in detail so that I can google and find detailed diagrams on the Internet.

Answer 1

ThisFruit burned you =)
Here is a question from a neighboring branch: Why did wifi disappear on the router at the same time and the web configuration interface stopped working?