Framework for Interface to Network Security Functions
RFC 8329
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Type |
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RFC - Informational
(February 2018; No errata)
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Last updated |
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2018-02-22
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Replaces |
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draft-merged-i2nsf-framework
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Stream |
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IETF
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Formats |
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plain text
html
pdf
htmlized
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Yoav Nir
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Shepherd write-up |
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Show
(last changed 2017-10-11)
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| IESG |
IESG state |
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RFC 8329 (Informational)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Kathleen Moriarty
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Send notices to |
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"Adrian Farrel" <adrian@olddog.co.uk>, Yoav Nir <ynir.ietf@gmail.com>, Adrian Farrel <adrian@olddog.co.uk>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IANA Actions
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Internet Engineering Task Force (IETF) D. Lopez
Request for Comments: 8329 Telefonica I+D
Category: Informational E. Lopez
ISSN: 2070-1721 Curveball Networks
L. Dunbar
J. Strassner
Huawei
R. Kumar
Juniper Networks
February 2018
Framework for Interface to Network Security Functions
Abstract
This document describes the framework for Interface to Network
Security Functions (I2NSF) and defines a reference model (including
major functional components) for I2NSF. Network Security Functions
(NSFs) are packet-processing engines that inspect and optionally
modify packets traversing networks, either directly or in the context
of sessions to which the packet is associated.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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 candidates for any level of Internet
Standard; see Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8329.
Lopez, et al. Informational [Page 1]
RFC 8329 I2NSF Framework February 2018
Copyright Notice
Copyright (c) 2018 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
(https://trustee.ietf.org/license-info) 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 . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 3
2.1. Acronyms . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Definitions . . . . . . . . . . . . . . . . . . . . . . . 4
3. I2NSF Reference Model . . . . . . . . . . . . . . . . . . . . 5
3.1. I2NSF Consumer-Facing Interface . . . . . . . . . . . . . 6
3.2. I2NSF NSF-Facing Interface . . . . . . . . . . . . . . . 6
3.3. I2NSF Registration Interface . . . . . . . . . . . . . . 7
4. Threats Associated with Externally Provided NSFs . . . . . . 8
5. Avoiding NSF Ossification . . . . . . . . . . . . . . . . . . 9
6. The Network Connecting I2NSF Components . . . . . . . . . . . 10
6.1. Network Connecting I2NSF Users and the I2NSF Controller . 10
6.2. Network Connecting the I2NSF Controller and NSFs . . . . 10
6.3. Interface to vNSFs . . . . . . . . . . . . . . . . . . . 11
6.4. Consistency . . . . . . . . . . . . . . . . . . . . . . . 12
7. I2NSF Flow Security Policy Structure . . . . . . . . . . . . 13
7.1. Customer-Facing Flow Security Policy Structure . . . . . 13
7.2. NSF-Facing Flow Security Policy Structure . . . . . . . . 14
7.3. Differences from ACL Data Models . . . . . . . . . . . . 16
8. Capability Negotiation . . . . . . . . . . . . . . . . . . . 16
9. Registration Considerations . . . . . . . . . . . . . . . . . 17
9.1. Flow-Based NSF Capability Characterization . . . . . . . 17
9.2. Registration Categories . . . . . . . . . . . . . . . . . 18
10. Manageability Considerations . . . . . . . . . . . . . . . . 21
11. Security Considerations . . . . . . . . . . . . . . . . . . . 22
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 22
13. References . . . . . . . . . . . . . . . . . . . . . . . . . 22
13.1. Normative References . . . . . . . . . . . . . . . . . . 22
13.2. Informative References . . . . . . . . . . . . . . . . . 23
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 25
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