Broadband misuse

[Lav2]

How do I see what devices are connected to my broadband? My teenage son had others in while we were out now I see them sat outside alot and I'm sure their using our broadband as when we switched it off they kept looking at our window and eventually walked away it's a cheek

[Chrisee]

@Lav2 you can see a list of devices connected by typing 192.168.0.1 into a browser. However the only way the stop outsiders using your network will be by changing the password. Impress on your kids that sharing the network password is like lending their mates the keys to your front door. 

https://www.sky.com/help/articles/find-and-change-your-wireless-password