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