Definitions for "Encapsulating Security Payload"
(ESP) A mechanism to provide confidentiality and integrity protection to IP datagrams.
IPSEC header that encrypts the contents of an IP packet. The most recent implementations of IPSEC may also provide authentication and anti-replay protection of the AH to the packets.
A provision of IPSec that encrypts and decrypts IP packets. The payload itself can be either the entire original packet (tunnel mode), or just the data portion (transport mode). The cryptography process is controlled by keys of various lengths employed in a variety of different algorithms.