IPFIX Information Elements for logging NAT Events
draft-ietf-behave-ipfix-nat-logging-01

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Replaces draft-sivakumar-behave-nat-logging
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Behave                                                      S. Sivakumar
Internet-Draft                                                  R. Penno
Intended status: Standards Track                           Cisco Systems
Expires: February 13, 2014                               August 12, 2013

           IPFIX Information Elements for logging NAT Events
                 draft-ietf-behave-ipfix-nat-logging-01

Abstract

   NAT devices are required to log events like creation and deletion of
   translations and information about the resources it is managing.  The
   logs are required in many cases to identify an attacker or a host
   that was used to launch malicious attacks and/or for various other
   purposes of accounting.  Since there is no standard way of logging
   this information, different NAT devices behave differently and hence
   it is difficult to expect a consistent behavior.  The lack of a
   consistent way makes it difficult to write the collector applications
   that would receive this data and process it to present useful
   information.  This document describes the information that is
   required to be logged by the NAT devices.

Status of This Memo

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   This Internet-Draft will expire on February 13, 2014.

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   Copyright (c) 2013 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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   (http://trustee.ietf.org/license-info) in effect on the date of

Sivakumar & Penno       Expires February 13, 2014               [Page 1]
Internet-Draft          IPFIX IEs for NAT logging            August 2013

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Table of Contents

   1.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   3.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Event based logging . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Logging of destination information  . . . . . . . . . . .   4
     5.2.  Information Elements  . . . . . . . . . . . . . . . . . .   5
     5.3.  Definition of NAT Events  . . . . . . . . . . . . . . . .   7
     5.4.  Quota exceeded - Sub Event types  . . . . . . . . . . . .   8
     5.5.  Templates for NAT Events  . . . . . . . . . . . . . . . .   8
       5.5.1.  NAT44 create and delete session event . . . . . . . .   8
       5.5.2.  NAT64 create and delete session event . . . . . . . .   9
       5.5.3.  NAT44 BIB create and delete event . . . . . . . . . .   9
       5.5.4.  NAT64 BIB create and delete event . . . . . . . . . .  10
       5.5.5.  Addresses Exhausted event . . . . . . . . . . . . . .  10
       5.5.6.  Ports Exhausted event . . . . . . . . . . . . . . . .  11
       5.5.7.  Quota exceeded  . . . . . . . . . . . . . . . . . . .  11
       5.5.8.  Address Binding . . . . . . . . . . . . . . . . . . .  11
       5.5.9.  Port block allocation and de-allocation . . . . . . .  12
   6.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . . . .  13
     6.1.  IPFIX . . . . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     10.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Terminology

   The usage of the term "NAT device" in this document refer to any
   NAT44 and NAT64 devices.  The usage of the term "collector" refers to
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