NSE4 · Question #485
Which of the following protocols are defined in the IPsec Standard? (Choose two)
The correct answer is A. AH D. ESP. The IPsec Standard defines two main protocols for securing IP communications: Authentication Header (AH), which provides data integrity and authentication, and Encapsulating Security Payload (ESP), which offers confidentiality, integrity, and authentication.
Question
Which of the following protocols are defined in the IPsec Standard? (Choose two)
Options
- AAH
- BGRE
- CSSL/TLS
- DESP
How the community answered
(31 responses)- A94% (29)
- B3% (1)
- C3% (1)
Why each option
The IPsec Standard defines two main protocols for securing IP communications: Authentication Header (AH), which provides data integrity and authentication, and Encapsulating Security Payload (ESP), which offers confidentiality, integrity, and authentication.
Authentication Header (AH) is an IPsec protocol that provides connectionless data integrity, data origin authentication, and an optional anti-replay service by adding an authentication header to IP packets.
Generic Routing Encapsulation (GRE) is a tunneling protocol used to encapsulate various network layer protocols but is not part of the IPsec standard itself.
SSL/TLS (Secure Sockets Layer/Transport Layer Security) is a cryptographic protocol primarily used for securing application-layer communications, distinct from IPsec which operates at the network layer.
Encapsulating Security Payload (ESP) is an IPsec protocol that provides confidentiality (encryption), data origin authentication, connectionless integrity, and an anti-replay service. It encapsulates the entire IP packet (or the transport layer segment).
Concept tested: IPsec core protocols
Source: https://learn.microsoft.com/en-us/windows/security/identity-protection/ipsec/ipsec-security-protocol-overview
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