300-710 Exam Questions Tutorials

The capture should be taken on the DMZ interface of the perimeter firewall because this is the firewall interface closest to the affected server. Capturing there shows the packets delivered to the server and the TCP RST packets returned by it. This placement helps determine whether the reset originates from the server, whether address translation changed the connection, or whether the firewall generated or altered the traffic. Capturing only on the internet-facing interface would show the external behavior but provide less certainty about what reached or left the DMZ server. The perimeter router and ISP router are even farther from the suspected source. Cisco troubleshooting guidance recommends capturing as close as possible to the relevant endpoint and on the associated firewall data interface. List B’s supplied answer C is therefore incorrect and has been corrected to D. Cisco firewall capture analysis

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