How to restrict internet for other devices?

Question

Computer networks

The Internet is distributed via wi-fi. We do not live in the city (in the village of Scotland), the speed is 1-2mb. Well, everything would be fine, but the parents were crazy to take each laptop. 50% of the time the torrent and Skype work, until I yell "You know that I have nothing to plow then" and I turn it off myself. Also, the sister's computer and her tablet are always connected to the poor channel. There is also a 2-year-old sister, she plays cartoons from YouTube on a large smart TV, in the best quality (not configurable), then no one has the Internet at all. Well, the phones of all households. I think you already understood me and shed a tear ?
As a result, 3 smartphones, a tablet, a TV set, 3 laptops and my hospital. I have not connected my tablet and phone for a long time. The option to change the network to a faster one is impossible, there is money, but there is no opportunity. The Internet goes through a telephone line.
Can I cut off devices from the Internet from my computer, monitor where and how much Internet goes and limit the speed? (often my sister turns everything on just for evil, so that I can’t do anything) .

Answer 1

Go to the wifi router admin panel, usually 192.168.0.1
There you will see all connected devices, you can disable those that are annoying. There is also a setting and restriction of access by IP and MAC addresses of devices, parental control. In general, with the instructions for a specific router model, you can tune it so that households will remember the times of modems with tears in their eyes. And at the same time, my sister will get rid of her addiction to social networks and other garbage in her head.

Answer 2

Since the Internet distributes a router (wi-fi), then you need to look for the ability to view statistics and limit traffic in it.