Service Function Chaining-Enabled I2NSF Architecture
draft-hyun-i2nsf-sfc-enabled-i2nsf-01

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Last updated 2016-10-05
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Network Working Group                                            S. Hyun
Internet-Draft                                                    S. Woo
Intended status: Standards Track                                  Y. Yeo
Expires: April 8, 2017                                          J. Jeong
                                                 Sungkyunkwan University
                                                                 J. Park
                                                                    ETRI
                                                         October 5, 2016

          Service Function Chaining-Enabled I2NSF Architecture
                 draft-hyun-i2nsf-sfc-enabled-i2nsf-01

Abstract

   This document describes an architecture of the I2NSF framework which
   enables traffic steering between NSFs for security policy
   enforcement.  Such traffic steering enables composite inspection of
   network traffic by steering the traffic through multiple types of
   security functions according to the information model for the NSF
   facing interface in the I2NSF framework.  This document explains the
   additional components integrated into the I2NSF framework and their
   functionalities to achieve NSF-triggered traffic steering.  It also
   describes representative use cases to address major benefits from the
   proposed architecture.

Status of This Memo

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   This Internet-Draft will expire on April 8, 2017.

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Internet-Draft       SFC-Enabled I2NSF Architecture         October 2016

Copyright Notice

   Copyright (c) 2016 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
   2.  Objective  . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Architecture . . . . . . . . . . . . . . . . . . . . . . . . .  5
     4.1.  NSF Operation Manager  . . . . . . . . . . . . . . . . . .  7
     4.2.  Developer's Management System  . . . . . . . . . . . . . .  7
     4.3.  Packet Forwarding Header . . . . . . . . . . . . . . . . .  8
     4.4.  Security Function Forwarder (SFF)  . . . . . . . . . . . .  8
   5.  Use Cases  . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     5.1.  Enforcing Different NSFs Depending on a Packet
           Source's Trust Level . . . . . . . . . . . . . . . . . . .  9
     5.2.  Effective Load Balancing with Dynamic NSF Instantiation  . 10
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 11
   Appendix A.  Changes from draft-hyun-i2nsf-sfc-enabled-i2nsf-00  . 12

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1.  Introduction

   To effectively cope with emerging sophisticated network attacks, it
   is necessary that various security functions cooperatively analyze
   network traffic [sfc-ns-use-cases] [RFC7498] [i2nsf-ps-and-use-cases]
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