I'm trying to configure my router to block certain keywords from being in the urls such as youtube and such others to stop bandwidth wastage. So I used my routers default router firewall and blocked all these keywords. And it worked on firefox and ie. It also worked on chrome for most of the websites. Though any google one I could not stop from loading such as youtube. Any suggestions on how to get around this. Some people on the network use chrome.

Thanks for your time, Thomas.