NSF-Triggered Traffic Steering Framework
draft-hyun-i2nsf-nsf-triggered-steering-00

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Network Working Group                                            S. Hyun
Internet-Draft                                                    S. Woo
Intended status: Standards Track                                  Y. Yeo
Expires: May 4, 2017                                            J. Jeong
                                                 Sungkyunkwan University
                                                                 J. Park
                                                                    ETRI
                                                        October 31, 2016

                NSF-Triggered Traffic Steering Framework
               draft-hyun-i2nsf-nsf-triggered-steering-00

Abstract

   This document describes an architecture of Interface to Network
   Security Functions (I2NSF) framework which enables traffic steering
   between Network Security Functions (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.

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Hyun, et al.               Expires May 4, 2017                  [Page 1]
Internet-Draft  NSF-Triggered Traffic Steering Framework    October 2016

   This Internet-Draft will expire on May 4, 2017.

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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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

Hyun, et al.               Expires May 4, 2017                  [Page 2]
Internet-Draft  NSF-Triggered Traffic Steering Framework    October 2016

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-problem-statement]
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