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In IPSec, AH provides...
(choose multiple)
Encryption
Key Negotiation
Authentication
Integrity
Authentication Header (AH) provides integrity and authentication. AH does not provide encryption or key negotiation. Second EDIT: someone butchered this poor question... This is stupid. One of the previous questions just stated that AH does not provide authentication. Get your shit straight Skillset EDIT: This question is correct. AH provides data integrity, data origin authentication, and an optional replay protection service. ESP protocol provides data confidentiality (encryption) and authentication (data integrity, data origin authentication, and replay protection). Source: https://www.ibm.com/support/knowledgecenter/en/SSLTBW2.3.0/com.ibm.zos.v2r3.halz002/ipsecurityipsecahesp.htm
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