An engineer must deploy a Cisco Secure Firewall Threat Defense instance. The company wants the Secure Firewall Threat Defense deployment to allow business traffic in the event of any type of failure, and there must be no connectivity issues caused by the IPS in the perimeter of its data center. Which implementation mode must the engineer use?
Answer(s): B
The Snort fail open mode is used in Cisco Secure Firewall Threat Defense to ensure that business traffic is allowed to pass through the firewall even if there is a failure in the IPS functionality. This is particularly useful when an organization prioritizes uninterrupted traffic flow over security inspection during failures.When Snort (the intrusion prevention system) fails or becomes unavailable, fail-open mode bypasses the IPS processing, ensuring that legitimate business traffic continues to flow without interruption.
Which firewall mode is Cisco Secure Firewall Threat Defense in when two physical interfaces are assigned to a named BVI?
Answer(s): C
When two physical interfaces are assigned to a named Bridge Virtual Interface (BVI), the Cisco Secure Firewall Threat Defense is operating in transparent mode. In transparent mode, the firewall acts as a Layer 2 device (essentially a bridge), passing traffic between interfaces within the same subnet. It does not perform traditional Layer 3 routing but can still enforce security policies and inspect traffic.
An engineer wants to add Cisco Secure Firewall Thread Defense to Cisco Secure Firewall Management Center with the real IP address hidden behind firewall. Engineer configured the command configure manager add Cisc0497926642 on Cisco Secure Firewall Thread Defense. After the command is added the device is not being added to Cisco Secure Firewall Management Center. Which configuration must be added in the configuration command to accomplish the task?
When the Cisco Secure Firewall Threat Defense (FTD) device is behind NAT and the real IP is hidden, a NAT ID must be used in the configure manager add command. This allows the FMC to uniquely identify and establish communication with the FTD device through NAT traversal. Without the NAT ID, the registration will fail.
An engineer is configuring two new Cisco Secure Firewall Threat Defense devices to replace the existing firewalls. Network traffic must be analyzed for intrusion events without impacting the traffic. What must the engineer implement next to accomplish the goal?
Passive mode allows the Cisco Secure Firewall Threat Defense device to analyze traffic for intrusion events without impacting or altering the traffic flow. This is ideal for monitoring environments where traffic inspection is needed but enforcement is not required.
A network engineer must configure an existing firewall to have a NAT configuration. The new configuration must support more than two interfaces per context. The firewall has previously been operating in transparent mode. The Cisco Secure Firewall Threat Defense device has been deregistered from Cisco Secure Firewall Management Center. Which set of configuration actions must the network engineer take next to meet the requirements?
Answer(s): A
To support NAT and multiple interfaces per context, the firewall must operate in routed mode. Since it was previously in transparent mode and is deregistered, the engineer must run configure firewall routed on the FTD CLI to change the mode. After that, the device can be reregistered with Cisco Secure Firewall Management Center for centralized management.
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