An External Attacker Has Compromised an Organization's Network Security Perimeter

question 148

Multiple Choice

An external attacker has compromised an organization's network security perimeter and installed a sniffer onto an inside computer. Which of the following is the MOST effective layer of security the organization could have implemented to mitigate the attacker's ability to gain further information?

• A) Implement packet filtering on the network firewalls
• B) Install Host Based Intrusion Detection Systems (HIDS)
• C) Require strong authentication for administrators
• D) Implement logical network segmentation at the switches

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