IPFIX Information Elements for logging NAT Events
draft-ietf-behave-ipfix-nat-logging-00

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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: September 20, 2013                               March 19, 2013

           IPFIX Information Elements for logging NAT Events
                 draft-ietf-behave-ipfix-nat-logging-00

Abstract

   NAT devices are required to log events like creation and deletion of
   translations and information about the resources it is managing.
   With the wide deployment of Carrier Grade NAT (CGN) devices, the
   logging of events have become very important for legal purposes.  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

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on September 20, 2013.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Sivakumar & Penno      Expires September 20, 2013               [Page 1]
Internet-Draft         IPFIX IEs for NAT logging              March 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.  Information Elements  . . . . . . . . . . . . . . . . . .   4
     5.2.  Definition of NAT Events  . . . . . . . . . . . . . . . .   7
     5.3.  Quota exceeded - Sub Event types  . . . . . . . . . . . .   8
     5.4.  Templates for NAT Events  . . . . . . . . . . . . . . . .   8
       5.4.1.  NAT44 create and delete session event . . . . . . . .   8
       5.4.2.  NAT64 create and delete session event . . . . . . . .   9
       5.4.3.  NAT44 BIB create and delete event . . . . . . . . . .   9
       5.4.4.  NAT64 BIB create and delete event . . . . . . . . . .  10
       5.4.5.  Addresses Exhausted event . . . . . . . . . . . . . .  10
       5.4.6.  Ports Exhausted event . . . . . . . . . . . . . . . .  10
       5.4.7.  Quota exceeded  . . . . . . . . . . . . . . . . . . .  11
       5.4.8.  Address Binding . . . . . . . . . . . . . . . . . . .  11
       5.4.9.  Port block allocation and de-allocation . . . . . . .  12
   6.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     6.1.  IPFIX . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     10.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Terminology

Sivakumar & Penno      Expires September 20, 2013               [Page 2]
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