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Right now we use OpenDNS for our webfiltering and have our ASA set to only allow DNS requests out to the OpenDNS servers we have configured. If any device tries to use a different DNS, like Google's, the ASA will just drop the traffic. I know how to ...
David,Thank you responding. Can this syntax be used for ASA version pre 8.3? Also, the OpenDNS servers are external DNS servers. I need to route request for 1 external DNS server (Google) to another external DNS server (OpenDNS). Thanks, Isom