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Network News Transfer Protocol (NNTP) Extension for Authentication
RFC 4643

Revision differences

Document history

Date By Action
2026-05-20
(System) Changed metadata: changed keywords to '['authinfo user/pass', 'authinfo simple', 'authinfo generic', 'sasl', 'simple authentication and security layer']' from '[]'
2026-05-20
(System) Metadata update from RFC Editor
2026-05-20
(System) Changed author "K. Murchison": changed name from "Ken Murchison" to "K. Murchison", cleared country (was "Pittsburgh, PA  15213 USA"), changed order from "-1" to "2"
2026-05-20
(System) Changed author "J. Vinocur": changed name from "Jeffrey Vinocur" to "J. Vinocur", cleared country (was "Ithaca, NY 14853 USA"), changed order from "0" to "1"
2026-05-20
(System) Metadata update from RFC Editor
2020-01-21
(System) Received changes through RFC Editor sync (added Verified Errata tag)
2018-12-20
(System)
Received changes through RFC Editor sync (changed abstract to 'This document defines an extension to the Network News Transfer Protocol (NNTP) that allows a client …
Received changes through RFC Editor sync (changed abstract to 'This document defines an extension to the Network News Transfer Protocol (NNTP) that allows a client to indicate an authentication mechanism to the server, to perform an authentication protocol exchange, and optionally to negotiate a security layer for subsequent protocol interactions during the remainder of an NNTP session.

This document updates and formalizes the AUTHINFO USER/PASS authentication method specified in RFC 2980 and deprecates the AUTHINFO SIMPLE and AUTHINFO GENERIC authentication methods. Additionally, this document defines a profile of the Simple Authentication and Security Layer (SASL) for NNTP. [STANDARDS-TRACK]')
2017-05-16
(System) Changed document authors from "Jeffrey Vinocur" to "Jeffrey Vinocur, Ken Murchison"
2015-10-14
(System) Notify list changed from ned.freed@mrochek.com, rra@stanford.edu to (None)
2006-11-17
Amy Vezza State Changes to RFC Published from RFC Ed Queue by Amy Vezza
2006-11-17
Amy Vezza [Note]: 'RFC 4643' added by Amy Vezza
2006-10-25
(System) RFC published