NSF-triggered Traffic Steering Framework
draft-hyun-i2nsf-nsf-triggered-steering-02

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Network Working Group                                            S. Hyun
Internet-Draft                                                  J. Jeong
Intended status: Standards Track                                  S. Woo
Expires: September 14, 2017                                       Y. Yeo
                                                 Sungkyunkwan University
                                                                 J. Park
                                                                    ETRI
                                                          March 13, 2017

                NSF-triggered Traffic Steering Framework
               draft-hyun-i2nsf-nsf-triggered-steering-02

Abstract

   This document describes an architecture of the Interface to Network
   Security Functions (I2NSF) framework which enables traffic steering
   between Network Security Functions (NSFs) for security policy
   enforcement.  Such traffic steering enables the 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 September 14, 2017.

Copyright Notice

   Copyright (c) 2017 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.  Network Security Function Forwarder (NSFF) . . . . . . . .  8
   5.  Information for Traffic Steering . . . . . . . . . . . . . . .  8
     5.1.  Packet Forwarding Header . . . . . . . . . . . . . . . . .  9
     5.2.  NSF Forwarding Information . . . . . . . . . . . . . . . .  9
       5.2.1.  Query of NSF forwarding information  . . . . . . . . . 10
       5.2.2.  Response of NSF forwarding information . . . . . . . . 10
   6.  Use Cases  . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     6.1.  Enforcing Different NSFs Depending on a Packet
           Source's Trust Level . . . . . . . . . . . . . . . . . . . 11
     6.2.  Effective Load Balancing with Dynamic NSF Instantiation  . 12
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 13
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 13
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 14
   Appendix A.  Changes from
                draft-hyun-i2nsf-nsf-triggered-steering-01  . . . . . 15

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1.  Introduction