RFC 1492 · INFORMATIONAL · 1993
TUE · 15 SEP 2026
An Access Control Protocol, Sometimes Called TACACS
Overview
RFC 1492, “An Access Control Protocol, Sometimes Called TACACS”, is an Informational document published in July 1993 by C. Finseth. The canonical text is published by the RFC Editor.
Abstract
This RFC documents the extended TACACS protocol use by the Cisco Systems terminal servers. This same protocol is used by the University of Minnesota's distributed authentication system. This memo provides information for the Internet community. It does not specify an Internet standard.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 1492 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1993
- RFC 1491 A Survey of Advanced Usages of X.500
- RFC 1493 Definitions of Managed Objects for Bridges
- RFC 1490 Multiprotocol Interconnect over Frame Relay
- RFC 1494 Equivalences between 1988 X.400 and RFC-822 Message Bodies
- RFC 1489 Registration of a Cyrillic Character Set
- RFC 1495 Mapping between X.400 and RFC-822 Message Bodies
- RFC 1488 The X.500 String Representation of Standard Attribute Syntaxes
- RFC 1496 Rules for downgrading messages from X.400/88 to X.400/84 when MIME content-types are present in the messages