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Security Architecture for the Internet Protocol
RFC 4301

Revision differences

Document history

Date By Action
2026-05-20
(System)
Changed metadata: changed keywords to '['ipsec', 'authentication', 'encapsulation', 'IP', 'IPv4', 'IPv6', 'IP-layer', 'ip authentication header', 'ip security', 'IPsec', 'confidentiality', 'authentication integrity', 'anti-replay', 'ah', 'esp', 'encapsulating …
Changed metadata: changed keywords to '['ipsec', 'authentication', 'encapsulation', 'IP', 'IPv4', 'IPv6', 'IP-layer', 'ip authentication header', 'ip security', 'IPsec', 'confidentiality', 'authentication integrity', 'anti-replay', 'ah', 'esp', 'encapsulating security payload', 'ike', 'internet key exchange', 'ikev2', 'esn', 'extended sequence number']' from '[]'
2026-05-20
(System) Metadata update from RFC Editor
2026-05-20
(System) Changed author "K. Seo": changed name from "Karen Seo" to "K. Seo", cleared country (was "USA"), changed order from "0" to "2"
2026-05-20
(System) Changed author "S. Kent": changed name from "Stephen Kent" to "S. Kent", cleared country (was "USA")
2026-05-20
(System) Metadata update from RFC Editor
2020-01-21
(System) Received changes through RFC Editor sync (added Verified Errata tag)
2015-10-14
(System) Notify list changed from byfraser@cisco.com, tytso@mit.edu to (None)
2014-09-19
(System) Posted related IPR disclosure: SSH Communications Security Oyj's Statement about IPR related to RFC 4301
2005-12-27
Amy Vezza State Changes to RFC Published from RFC Ed Queue by Amy Vezza
2005-12-27
Amy Vezza [Note]: 'RFC 4301' added by Amy Vezza
2005-12-22
(System) RFC published