So i have open DNS setup on my home router which is connected to my Verizon router (piece of crap) which i also have running open DNS. I run open dns for security and for filtering i have several teenagers in the house and i need to filter content. The only problem is that they can bypass the DNS server settings by setting them manually on there computer Start > Control panel > network and sharing > adapter setting > left click on adapter > properties > IPV4 properties and then change the DNS. I was wondering if there was a way to make it so this trick does not work? I have tried everything i know to do. I have set the open DNS, as the DNS server on every connection on my Verizon router and on my linksys router but it can still be bypassed. How can i fix this?