A YANG Data Model for Network Address Translation (NAT) and Network Prefix Translation (NPT)
draft-ietf-opsawg-nat-yang-09

Document Type Active Internet-Draft (opsawg WG)
Last updated 2017-11-16
Replaces draft-sivakumar-yang-nat
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Network Working Group                                       M. Boucadair
Internet-Draft                                                    Orange
Intended status: Standards Track                            S. Sivakumar
Expires: May 19, 2018                                      Cisco Systems
                                                            C. Jacquenet
                                                                  Orange
                                                           S. Vinapamula
                                                        Juniper Networks
                                                                   Q. Wu
                                                                  Huawei
                                                       November 15, 2017

  A YANG Data Model for Network Address Translation (NAT) and Network
                        Prefix Translation (NPT)
                     draft-ietf-opsawg-nat-yang-09

Abstract

   For the sake of network automation and the need for programming
   Network Address Translation (NAT) function in particular, a data
   model for configuring and managing the NAT is essential.  This
   document defines a YANG module for the NAT function.

   NAT44, Network Address and Protocol Translation from IPv6 Clients to
   IPv4 Servers (NAT64), Customer-side transLATor (CLAT), Stateless IP/
   ICMP Translation (SIIT), Explicit Address Mappings for Stateless IP/
   ICMP Translation (SIIT EAM), and IPv6 Network Prefix Translation
   (NPTv6) are covered in this document.

Editorial Note (To be removed by RFC Editor)

   Please update these statements with the RFC number to be assigned to
   this document:

      "This version of this YANG module is part of RFC XXXX;"

      "RFC XXXX: A YANG Data Model for Network Address Translation (NAT)
      and Network Prefix Translation (NPT)";

      "reference: RFC XXXX"

Status of This Memo

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

Boucadair, et al.         Expires May 19, 2018                  [Page 1]
Internet-Draft             Yang Model for NAT              November 2017

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Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview of the NAT YANG Data Model . . . . . . . . . . . . .   5
     2.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Various Translation Flavors . . . . . . . . . . . . . . .   6
     2.3.  TCP/UDP/ICMP NAT Behavioral Requirements  . . . . . . . .   7
     2.4.  Other Transport Protocols . . . . . . . . . . . . . . . .   7
     2.5.  IP Addresses Used for Translation . . . . . . . . . . . .   8
     2.6.  Port Set Assignment . . . . . . . . . . . . . . . . . . .   8
     2.7.  Port-Restricted IP Addresses  . . . . . . . . . . . . . .   8
     2.8.  NAT Mapping Entries . . . . . . . . . . . . . . . . . . .   8
     2.9.  Resource Limits . . . . . . . . . . . . . . . . . . . . .  12
     2.10. Binding the NAT Function to an External Interface . . . .  15
     2.11. Relationship to NATV2-MIB . . . . . . . . . . . . . . . .  15
     2.12. Tree Structure  . . . . . . . . . . . . . . . . . . . . .  16
   3.  NAT YANG Module . . . . . . . . . . . . . . . . . . . . . . .  22
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  72
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  73
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  74

Boucadair, et al.         Expires May 19, 2018                  [Page 2]
Internet-Draft             Yang Model for NAT              November 2017
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