These can all be used in IPSec except which concept?
CBK 3: Security Engineering
Source: ThorTeaches.com practice tests
D: IPSEC (Internet Protocol Security): Set of protocols that provide a cryptographic layer to IP traffic (IPv4 and IPv6). It uses AH (Authentication Header) to provide authentication and integrity for each packet. ESP (Encapsulation Security Payload) which provides confidentiality and SA (Security Association) which is a simplex one-way communication (Like a walkie talkie).Can be used to negotiate ESP or AH parameters.
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