RFC 1826 · PROPOSED STANDARD · 1995
SUN · 14 JUN 2026
IP Authentication Header
Overview
RFC 1826, “IP Authentication Header”, is a Proposed Standard document published in August 1995 by R. Atkinson. It has been obsoleted by RFC 2402 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes a mechanism for providing cryptographic authentication for IPv4 and IPv6 datagrams. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 1826 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1995
- RFC 1825 Security Architecture for the Internet Protocol
- RFC 1827 IP Encapsulating Security Payload
- RFC 1824 The Exponential Security System TESS: An Identity-Based Cryptographic Protocol for Authenticated Key-Exchange
- RFC 1828 IP Authentication using Keyed MD5
- RFC 1823 The LDAP Application Program Interface
- RFC 1829 The ESP DES-CBC Transform
- RFC 1822 A Grant of Rights to Use a Specific IBM patent with Photuris
- RFC 1830 SMTP Service Extensions for Transmission of Large and Binary MIME Messages