Hi,
I am using a Vigor 3900 series and I was wondering if anyone knew how to add a firewall rule to block any DNS queries that are not using the openDNS servers. If people can just configure their own DNS servers then they can bypass the security I have put in with openDNS, but if I block DNS traffic to any servers other than openDNS it might annoy people trying to get round the system a bit more.
Thanks
Ned

Create a rule to block all DNS requests unless further match
Under the above rule create a new rule for DNS with the destination for openDNS to be Pass.