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Difficulty: MediumSecurity Program Elements and Physical Access Controls

An enterprise organization is updating security measures for its core telecommunications enclosure to protect critical network hardware. Which mechanism serves as a physical access control specifically designed to prevent unauthorized individuals from tailgating authorized personnel into the facility?

  1. A mantrap portal equipped with interlocking doors and biometric identity verificationAnswer
  2. B
    An extended IPv4 access control list filtering inbound traffic on the gateway router interface
  3. C
    A centralized TACACS+ server configured for administrative SSH command authorization
  4. D
    Port security configured with sticky MAC learning enabled on access switch interfaces

Answer

A mantrap portal equipped with interlocking doors and biometric identity verification
A mantrap portal consists of a small vestibule with two interlocking doors. Once an authorized user enters the outer door, it must close and lock before authentication unlocks the inner door. This structure physically limits entry to one validated person at a time, preventing tailgating.

Step-by-Step Solution

1
Identify the primary threat vector and control category specified in the scenario.
The requirement specifies physical security controls to prevent tailgating into a telecommunications enclosure.
Tailgating occurs when an unauthorized person closely follows an authorized user through a physical entrance without independent authentication.
2
Evaluate the candidate security controls.
Mantrap portals enforce single-person physical access through interlocking doors. Logical controls like ACLs, TACACS+, and port security manage digital network access, not physical perimeter security.
Physical access controls directly restrict physical entry to physical hardware and secure spaces.

Key Concept

Physical Access Controls and Anti-Tailgating Mechanisms
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Topics

Security Program Elements and Physical Access Controls

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