Nounverified· unreviewed MWEverified· unreviewed

IP Authentication Header

nounverified· unreviewed·updated Aug 30, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

Protocol used to provide connectionless integrity and data origin authentication for IP datagrams (hereafter referred to as just integrity) and to provide protection against replays. (RFC 4302). Scope Note: AH ensures data integrity with a checksum that a message authentication code, such as MD5, generates. To ensure data origin authentication, AH includes a secret shared key in the algorithm that it uses for authentication. To ensure replay protection, AH uses a sequence number field within the IP authentication header.

Framework senses

2 senses across 2 frameworks

ISACA Cybersecurity Glossary1 senseview framework →

§1: Protocol used to provide connectionless integrity and data origin authentication for IP datagrams (hereafter referred to as just integrity) and to provide protection against replays. (RFC 4302). Scope Note: AH ensures data integrity with a checksum that a message authentication code, such as MD5, generates. To ensure data origin authentication, AH includes a secret shared key in the algorithm that it uses for authentication. To ensure replay protection, AH uses a sequence number field within the IP authentication header.

Legacy lexicon import1 senseview framework →

§1 · legacy_primary: Protocol used to provide connectionless integrity and data origin authentication for IP datagrams (hereafter referred to as just integrity) and to provide protection against replays. (RFC 4302). Scope Note: AH ensures data integrity with a checksum that a message authentication code, such as MD5, generates. To ensure data origin authentication, AH includes a secret shared key in the algorithm that it uses for authentication. To ensure replay protection, AH uses a sequence number field within the IP authentication header.
DR-088 backfill from the noun definition column