IPFIX Information Elements for logging NAT Events
draft-ietf-behave-ipfix-nat-logging-04

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Last updated 2015-10-14 (latest revision 2014-07-02)
Replaces draft-sivakumar-behave-nat-logging
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Behave                                                      S. Sivakumar
Internet-Draft                                                  R. Penno
Intended status: Standards Track                           Cisco Systems
Expires: January 3, 2015                                    July 2, 2014

           IPFIX Information Elements for logging NAT Events
                 draft-ietf-behave-ipfix-nat-logging-04

Abstract

   Network operators expect NAT devices to log events like creation and
   deletion of translations and information about the resources it is
   managing.  The logs are essential 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 log the
   information using proprietary formats and hence it is difficult to
   expect a consistent behavior.  The lack of a consistent way to log
   the data makes it difficult to write the collector applications that
   would receive this data and process it to present useful information.
   This document describes the formats for logging of NAT events.

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Copyright Notice

   Copyright (c) 2014 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
   (http://trustee.ietf.org/license-info) in effect on the date of

Sivakumar & Penno        Expires January 3, 2015                [Page 1]
Internet-Draft          IPFIX IEs for NAT logging              July 2014

   publication of this document.  Please review these documents
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Table of Contents

   1.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Event based logging . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Logging of destination information  . . . . . . . . . . .   5
     5.2.  Information Elements  . . . . . . . . . . . . . . . . . .   5
     5.3.  Definition of NAT Events  . . . . . . . . . . . . . . . .   8
     5.4.  Quota exceeded Event types  . . . . . . . . . . . . . . .   9
     5.5.  Threshold reached Event types . . . . . . . . . . . . . .   9
     5.6.  Templates for NAT Events  . . . . . . . . . . . . . . . .  10
       5.6.1.  NAT44 create and delete session events  . . . . . . .  10
       5.6.2.  NAT64 create and delete session events  . . . . . . .  11
       5.6.3.  NAT44 BIB create and delete events  . . . . . . . . .  12
       5.6.4.  NAT64 BIB create and delete events  . . . . . . . . .  12
       5.6.5.  Addresses Exhausted event . . . . . . . . . . . . . .  13
       5.6.6.  Ports Exhausted event . . . . . . . . . . . . . . . .  13
       5.6.7.  Quota exceeded events . . . . . . . . . . . . . . . .  14
         5.6.7.1.  Maximum session entries exceeded  . . . . . . . .  14
         5.6.7.2.  Maximum BIB entries exceeded  . . . . . . . . . .  14
         5.6.7.3.  Maximum entries per user exceeded . . . . . . . .  14
         5.6.7.4.  Maximum active host or subscribers exceeded . . .  15
         5.6.7.5.  Maximum fragments pending reassembly exceeded . .  15
       5.6.8.  Threshold reached events  . . . . . . . . . . . . . .  16
         5.6.8.1.  Address pool high or low threshold reached  . . .  16
         5.6.8.2.  Address and port high threshold reached . . . . .  16
         5.6.8.3.  Per-user Address and port high threshold reached   17
         5.6.8.4.  Global Address mapping high threshold reached . .  17
       5.6.9.  Address binding create and delete events  . . . . . .  18
       5.6.10. Port block allocation and de-allocation . . . . . . .  18
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