Setup Internet Filtering on Home Router  One of the best known tricks among tech people world-wide, is the ability to change DNS on a router. Once the DNS is changed it will all filter harmful content across all devices connected to that router. In most cases it is extremely simple to do, doesn’t slow your network down and doesn’t require extra hardware or cost. There are many DNS services world-wide that provides DNS Content Filtering, but Safe Surfer is proven to be one of the best.