RFC 3414 (rfc3414) - Page 1 of 88


User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)



Alternative Format: Original Text Document



Network Working Group                                      U. Blumenthal
Request for Comments: 3414                                     B. Wijnen
STD: 62                                              Lucent Technologies
Obsoletes: 2574                                            December 2002
Category: Standards Track


          User-based Security Model (USM) for version 3 of the
              Simple Network Management Protocol (SNMPv3)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document describes the User-based Security Model (USM) for
   Simple Network Management Protocol (SNMP) version 3 for use in the
   SNMP architecture.  It defines the Elements of Procedure for
   providing SNMP message level security.  This document also includes a
   Management Information Base (MIB) for remotely monitoring/managing
   the configuration parameters for this Security Model.  This document
   obsoletes RFC 2574.

Table of Contents

   1.        Introduction..........................................  4
   1.1.      Threats...............................................  4
   1.2.      Goals and Constraints.................................  6
   1.3.      Security Services.....................................  6
   1.4.      Module Organization...................................  7
   1.4.1.    Timeliness Module.....................................  8
   1.4.2.    Authentication Protocol...............................  8
   1.4.3.    Privacy Protocol......................................  8
   1.5.      Protection against Message Replay, Delay
             and Redirection.......................................  9
   1.5.1.    Authoritative SNMP engine.............................  9
   1.5.2.    Mechanisms............................................  9
   1.6.      Abstract Service Interfaces........................... 11




Blumenthal & Wijnen         Standards Track