Network Access Control List (ACL) YANG Data Model
draft-ietf-netmod-acl-model-20

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Last updated 2018-10-01
Replaces draft-bogdanovic-netmod-acl-model
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NETMOD WG                                                M. Jethanandani
Internet-Draft                                                    VMware
Intended status: Standards Track                              S. Agarwal
Expires: April 4, 2019                               Cisco Systems, Inc.
                                                                L. Huang

                                                                D. Blair
                                                         October 1, 2018

           Network Access Control List (ACL) YANG Data Model
                     draft-ietf-netmod-acl-model-20

Abstract

   This document defines a data model for Access Control List (ACL).  An
   ACL is a user-ordered set of rules, used to configure the forwarding
   behavior in device.  Each rule is used to find a match on a packet,
   and define actions that will be performed on the packet.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 4, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must

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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Definitions and Acronyms  . . . . . . . . . . . . . . . .   4
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
     1.3.  Tree Diagram  . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Understanding ACL's Filters and Actions . . . . . . . . . . .   5
     3.1.  ACL Modules . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  ACL YANG Models . . . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  IETF Access Control List module . . . . . . . . . . . . .   9
     4.2.  IETF Packet Fields module . . . . . . . . . . . . . . . .  24
     4.3.  ACL Examples  . . . . . . . . . . . . . . . . . . . . . .  37
     4.4.  Port Range Usage and Other Examples . . . . . . . . . . .  39
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  43
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  44
     6.1.  URI Registration  . . . . . . . . . . . . . . . . . . . .  44
     6.2.  YANG Module Name Registration . . . . . . . . . . . . . .  44
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  45
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  45
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  45
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  47
   Appendix A.  Extending ACL model examples . . . . . . . . . . . .  48
     A.1.  A company proprietary module example  . . . . . . . . . .  48
     A.2.  Linux nftables  . . . . . . . . . . . . . . . . . . . . .  51
     A.3.  Ethertypes  . . . . . . . . . . . . . . . . . . . . . . .  52
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  60

1.  Introduction

   Access Control List (ACL) is one of the basic elements used to
   configure device forwarding behavior.  It is used in many networking
   technologies such as Policy Based Routing (PBR), firewalls etc.

   An ACL is an user-ordered set of rules, that is used to filter
   traffic on a networking device.  Each rule is represented by an
   Access Control Entry (ACE).

   Each ACE has a group of match criteria and a group of actions.

   The match criteria allow for definition of packet headers and
   metadata, the contents of which must match the definitions.

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