QuestionQ5

Network Security

To protect against network attacks, it is sufficient to deploy security devices, such as a firewall and IPS, only at the Internet egress. No security device must be deployed on the enterprise intranet.

Explanation

Perimeter-only controls cannot protect against insider threats, compromised internal devices, or lateral movement within an enterprise. Defense in depth requires appropriate internal security controls and segmentation in addition to Internet-egress protections.

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