I find webroot Google search engine. I hope you will help. I am teacher in the school. I need to block this site. I give you link. https://sites.google.com/site/allunblockedgames77 Children enter this site in their free time. They don't listen to me. Can I block through the system, will you show me the way ? I want to block all unblocked games web site. I try dns but it is useless. Thank you.