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IP Flow Anonymization Support (RFC6235) Disclosure Number: IPCOM000206952D
Original Publication Date: 2011-May-01
Included in the Prior Art Database: 2011-May-14

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

E. Boschi: AUTHOR [+1]


The standardization of an IP Flow Information Export (IPFIX) protocol [RFC5101] and associated representations removes a technical barrier to the sharing of IP flow data across organizational boundaries and with network operations, security, and research communities for a wide variety of purposes. However, with wider dissemination comes greater risks to the privacy of the users of networks under measurement, and to the security of those networks. While it is not a complete solution to the issues posed by distribution of IP flow information, anonymization (i.e., the deletion or transformation of information that is considered sensitive and that could be used to reveal the identity of subjects involved in a communication) is an important tool for the protection of privacy within network measurement infrastructures.

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Internet Engineering Task Force (IETF)                         E. Boschi Request for Comments: 6235                                   B. Trammell Category: Experimental                                        ETH Zurich ISSN: 2070-1721                                                 May 2011

                      IP Flow Anonymization Support


   This document describes anonymization techniques for IP flow data and    the export of anonymized data using the IP Flow Information Export    (IPFIX) protocol.  It categorizes common anonymization schemes and    defines the parameters needed to describe them.  It provides    guidelines for the implementation of anonymized data export and    storage over IPFIX, and describes an information model and Options-    based method for anonymization metadata export within the IPFIX    protocol or storage in IPFIX Files.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for examination, experimental implementation, and    evaluation.

   This document defines an Experimental Protocol for the Internet    community.  This document is a product of the Internet Engineering    Task Force (IETF).  It represents the consensus of the IETF    community.  It has received public review and has been approved for    publication by the Internet Engineering Steering Group (IESG).  Not    all documents approved by the IESG are a candidate for any level of    Internet Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Boschi & Trammell             Experimental                      [Page 1]
 RFC 6235              IP Flow Anonymization Support             May 2011

 Copyright Notice

   Copyright (c) 2011 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    ( 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    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 ....................................................4

      1.1. IPFIX Protocol Overview ...........................