An engineer is troubleshooting connectivity to the DNS servers from hosts behind a new Cisco...

Use the Connection Events dashboard to check the block reason and adjust the inspection policy as needed.

Use the packet capture tool to check where the traffic is being blocked and adjust the access control or intrusion policy as needed.

Use the packet tracer tool to determine at which hop the packet is being dropped.

Use the show blocks command in the Threat Defense CLI tool and create a policy to allow the blocked traffic.