Multi Provider DNSSEC models
draft-huque-dnsop-multi-provider-dnssec-01

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Replaced by draft-ietf-dnsop-multi-provider-dnssec
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Internet Engineering Task Force                                 S. Huque
Internet-Draft                                                   P. Aras
Intended status: Informational                                Salesforce
Expires: September 04, 2018                               March 03, 2018

                      Multi Provider DNSSEC models
               draft-huque-dnsop-multi-provider-dnssec-01

Abstract

   Many enterprises today employ the service of multiple DNS providers
   to distribute their authoritative DNS service.  Deploying DNSSEC in
   such an environment can have some challenges depending on the
   configuration and feature set in use.  This document will present
   several deployment models that may be suitable.

Status of This Memo

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   This Internet-Draft will expire on September 04, 2018.

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Table of Contents

   1.  Introduction and Motivation . . . . . . . . . . . . . . . . .   2
   2.  Deployment Models . . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Serve Only model  . . . . . . . . . . . . . . . . . . . .   2
     2.2.  Sign and Serve model  . . . . . . . . . . . . . . . . . .   3
       2.2.1.  Model 1 . . . . . . . . . . . . . . . . . . . . . . .   4
       2.2.2.  Model 2 . . . . . . . . . . . . . . . . . . . . . . .   4
       2.2.3.  Other Models  . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Inline Signing model  . . . . . . . . . . . . . . . . . .   4
   3.  Signing Algorithm Considerations  . . . . . . . . . . . . . .   5
   4.  Validating Resolver Behavior  . . . . . . . . . . . . . . . .   5
   5.  Key Rollover Considerations . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction and Motivation

   Many enterprises today employ the service of multiple DNS providers
   to distribute their authoritative DNS service.  Two providers are
   fairly typical and this allows the DNS service to survive a complete
   failure of any single provider.  This document outlines some possible
   models of DNSSEC [RFC4033] [RFC4034] [RFC4035] deployment in such an
   environment.

2.  Deployment Models

   The two main models discussed are (1) where the zone owner runs a
   master signing server and essentially treats the managed DNS
   providers as secondary servers, the "Serve Only" model, and (2) where
   the managed DNS providers each act like primary servers, signing data
   received from the zone owner and serving it out to DNS queriers, the
   "Sign and Serve" model.

2.1.  Serve Only model

   The most straightforward deployment model is one in which the zone
   owner runs a primary master DNS server, and manages the signing of
   zone data.  The master server uses DNS zone transfer mechanisms (AXFR
   /IXFR) to distribute the signed zone to multiple DNS providers.

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   This is also arguably the most secure model because the zone owner
   holds the private signing keys.  The managed DNS providers cannot
   serve bogus data (either maliciously or because of compromise of
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