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A network engineer implements a new Cisco Firepower device on the network to take advantage of its intrusion detection functionality. There is a requirement to analyze the traffic going across the device, alert on any malicious traffic, and appear as a bump in the wire How should this be implemented?

A.

Specify the BVl IP address as the default gateway for connected devices.

Answers
A.

Specify the BVl IP address as the default gateway for connected devices.

B.

Enable routing on the Cisco Firepower

Answers
B.

Enable routing on the Cisco Firepower

C.

Add an IP address to the physical Cisco Firepower interfaces.

Answers
C.

Add an IP address to the physical Cisco Firepower interfaces.

D.

Configure a bridge group in transparent mode.

Answers
D.

Configure a bridge group in transparent mode.

Suggested answer: D

Explanation:

Traditionally, a firewall is a routed hop and acts as a default gateway for hosts that connect to one of its screened subnets. A transparent firewall, on the other hand, is a Layer 2 firewall that acts like a "bump in the wire," or a "stealth firewall," and is not seen as a router hop to connected devices.

However, like any other firewall, access control between interfaces is controlled, and all of the usual firewall checks are in place. Layer 2 connectivity is achieved by using a "bridge group" where you group together the inside and outside interfaces for a network, and the ASA uses bridging techniques to pass traffic between the interfaces. Each bridge group includes a Bridge Virtual Interface (BVI) to which you assign an IP address on the network. You can have multiple bridge groups for multiple networks. In transparent mode, these bridge groups cannot communicate with each other.

https://www.cisco.com/c/en/us/td/docs/security/asa/asa97/configuration/general/asa-97-generalconfig/intro-fw.html

asked 07/10/2024
James Pridemore
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