Doubt regarding wi-fi router

[bhaazee]

Hello SF,

I have a wi-fi router. Some 5 of us are sharing the network. Although the signal seems strong, the network is slow most of the time. I believe someone is eating too much of speed by often downloading video files of huge size. Is there any way I can configure the modem such that, certain sites remain restricted for use or it would be still better if I can completely restrict opening any video contents.

 

Any kind of help/suggestion is very much appreciated

 

Regards