Yang data model for Terminal Access Controller Access Control System Plus
draft-zheng-opsawg-tacacs-yang-01

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Last updated 2019-03-10 (latest revision 2018-09-24)
Replaces draft-zheng-netmod-tacacs-yang
Replaced by draft-ietf-opsawg-tacacs-yang
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Network Working Group                                           G. Zheng
Internet-Draft                                                   M. Wang
Intended status: Standards Track                                   B. Wu
Expires: September 11, 2019                                       Huawei
                                                          March 10, 2019

  Yang data model for Terminal Access Controller Access Control System
                                  Plus
                   draft-zheng-opsawg-tacacs-yang-01

Abstract

   This document defines two YANG modules that augment the System data
   model defined in the [RFC 7317] with TACACS+ client model and
   additional AAA model.  The data model of Terminal Access Controller
   Access Control System Plus (TACACS+) client allows the configuration
   of TACACS+ servers for centralized Authentication, Authorization and
   Accouting.  While the current system model only supports
   authentication configuration, the additional AAA model allows system
   authorization and accouting configuration.

   The YANG modules in this document conforms to the Network Management
   Datastore Architecture (NMDA) defined in [RFC8342].

Status of This Memo

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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
     2.1.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   4
   3.  TACACSPLUS Client Model . . . . . . . . . . . . . . . . . . .   4
   4.  AAA Model Augmentation  . . . . . . . . . . . . . . . . . . .   5
     4.1.  User Authorization Model  . . . . . . . . . . . . . . . .   6
     4.2.  User Accounting Model . . . . . . . . . . . . . . . . . .   6
   5.  TACACS+ Module  . . . . . . . . . . . . . . . . . . . . . . .   7
   6.  AAA Module  . . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   This document defines two YANG modules that augment the System data
   model defined in the [RFC 7317] with TACACS+ client model and
   additional AAA model.  The data model of Terminal Access Controller
   Access Control System Plus (TACACS+) client allows the configuration
   of TACACS+ servers for centralized Authentication, Authorization and
   Accouting.  While the current system model only supports
   authentication configuration, the additional AAA model allows system
   authorization and accouting configuration.

   TACACS+ provides Device Administration for routers, network access
   servers and other networked computing devices via one or more
   centralized servers which is defined inthe TACACS+ Protocol.
   [I-D.ietf-opsawg-tacacs]

   A YANG Data Model for System Management [RFC7317]defines two YANG
   features to support local or RADIUS authentication:

   o  User Authentication Model: Define a list of usernames and
      passwords and control the order in which local or RADIUS
      authentication is used.

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   o  RADIUS Client Model: Defines a list of RADIUS server that a device
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