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Authentication Headers (AH) provides the following serv…

Authentication Headers (AH) and Encapsulating Security Payload (ESP) protocols are the driving force of
IPSec. Authentication Headers (AH) provides the following service except:

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A.
Authentication

B.
Integrity

C.
Replay resistance and non-repudiations

D.
Confidentiality

Explanation:
Integrity and authentication for IP datagrams are provided by AH, but AH does not provide Confidentiality.
Incorrect Answers:
A: Authentication is provided by AH.
B: Integrity is provided by AH.
C: Authentication Headers (AH) might also provide non-repudiation, depending on which cryptographic
algorithm is used and how keying is performed. With non-repudiations comes replay resistance.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 862


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