Secure Zero Touch Provisioning (SZTP)
RFC 8572

Document Type RFC - Proposed Standard (April 2019; No errata)
Last updated 2019-04-30
Replaces draft-kwatsen-netconf-zerotouch
Stream IETF
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Additional URLs
- Yang catalog entry for ietf-sztp-bootstrap-server@2019-01-15.yang
- Yang catalog entry for ietf-sztp-conveyed-info@2019-01-15.yang
- Yang impact analysis for draft-ietf-netconf-zerotouch
- Mailing list discussion
Stream WG state Submitted to IESG for Publication
Document shepherd Mahesh Jethanandani
Shepherd write-up Show (last changed 2018-09-12)
IESG IESG state RFC 8572 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Ignas Bagdonas
Send notices to Bert Wijnen <bwijnen@bwijnen.net>, Bert Wijnen <bwietf@bwijnen.net>, Mahesh Jethanandani <mjethanandani@gmail.com>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                         K. Watsen
Request for Comments: 8572                               Watsen Networks
Category: Standards Track                                      I. Farrer
ISSN: 2070-1721                                      Deutsche Telekom AG
                                                          M. Abrahamsson
                                                               T-Systems
                                                              April 2019

                 Secure Zero Touch Provisioning (SZTP)

Abstract

   This document presents a technique to securely provision a networking
   device when it is booting in a factory-default state.  Variations in
   the solution enable it to be used on both public and private
   networks.  The provisioning steps are able to update the boot image,
   commit an initial configuration, and execute arbitrary scripts to
   address auxiliary needs.  The updated device is subsequently able to
   establish secure connections with other systems.  For instance, a
   device may establish NETCONF (RFC 6241) and/or RESTCONF (RFC 8040)
   connections with deployment-specific network management systems.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc8572.

Watsen, et al.               Standards Track                    [Page 1]
RFC 8572          Secure Zero Touch Provisioning (SZTP)       April 2019

Copyright Notice

   Copyright (c) 2019 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.

Watsen, et al.               Standards Track                    [Page 2]
RFC 8572          Secure Zero Touch Provisioning (SZTP)       April 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   5
     1.1.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . .   5
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   6
     1.3.  Requirements Language . . . . . . . . . . . . . . . . . .   8
     1.4.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   8
   2.  Types of Conveyed Information . . . . . . . . . . . . . . . .   8
     2.1.  Redirect Information  . . . . . . . . . . . . . . . . . .   8
     2.2.  Onboarding Information  . . . . . . . . . . . . . . . . .   9
   3.  Artifacts . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     3.1.  Conveyed Information  . . . . . . . . . . . . . . . . . .  10
     3.2.  Owner Certificate . . . . . . . . . . . . . . . . . . . .  12
     3.3.  Ownership Voucher . . . . . . . . . . . . . . . . . . . .  13
     3.4.  Artifact Encryption . . . . . . . . . . . . . . . . . . .  13
     3.5.  Artifact Groupings  . . . . . . . . . . . . . . . . . . .  14
   4.  Sources of Bootstrapping Data . . . . . . . . . . . . . . . .  15
     4.1.  Removable Storage . . . . . . . . . . . . . . . . . . . .  15
     4.2.  DNS Server  . . . . . . . . . . . . . . . . . . . . . . .  16
     4.3.  DHCP Server . . . . . . . . . . . . . . . . . . . . . . .  20
     4.4.  Bootstrap Server  . . . . . . . . . . . . . . . . . . . .  21
   5.  Device Details  . . . . . . . . . . . . . . . . . . . . . . .  22
     5.1.  Initial State . . . . . . . . . . . . . . . . . . . . . .  22
     5.2.  Boot Sequence . . . . . . . . . . . . . . . . . . . . . .  24
     5.3.  Processing a Source of Bootstrapping Data . . . . . . . .  25
     5.4.  Validating Signed Data  . . . . . . . . . . . . . . . . .  27
     5.5.  Processing Redirect Information . . . . . . . . . . . . .  28
     5.6.  Processing Onboarding Information . . . . . . . . . . . .  28
   6.  The Conveyed Information Data Model . . . . . . . . . . . . .  32
     6.1.  Data Model Overview . . . . . . . . . . . . . . . . . . .  32
     6.2.  Example Usage . . . . . . . . . . . . . . . . . . . . . .  32
     6.3.  YANG Module . . . . . . . . . . . . . . . . . . . . . . .  34
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