Our WCF (Umbrella) relies on devices using specific DNS servers. Currently I am able to statically assign a DNS server and bypass this security. Is there a way to prevent clients from connecting if they have statically assigned a DNS server?
Thanks for the replies guys. Tim that's a great point. We have, currently, chosen not to deploy Firewalls though, since this is for our branch office public Guest networks and are entirely separated from our corporate network.