Dynamic Peer Discovery for RADIUS/TLS and RADIUS/DTLS Based on the Network Access Identifier (NAI)
RFC 7585
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Type |
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RFC - Experimental
(October 2015; Errata)
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Last updated |
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2017-04-11
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Replaces |
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draft-winter-dynamic-discovery
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IETF
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bibtex
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Submitted to IESG for Publication
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Document shepherd |
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Jouni Korhonen
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Show
(last changed 2015-03-06)
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IESG state |
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RFC 7585 (Experimental)
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Consensus Boilerplate |
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Yes
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Responsible AD |
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Kathleen Moriarty
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(None)
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| IANA |
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IANA OK - Actions Needed
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) S. Winter
Request for Comments: 7585 RESTENA
Category: Experimental M. McCauley
ISSN: 2070-1721 AirSpayce
October 2015
Dynamic Peer Discovery for RADIUS/TLS and RADIUS/DTLS
Based on the Network Access Identifier (NAI)
Abstract
This document specifies a means to find authoritative RADIUS servers
for a given realm. It is used in conjunction with either RADIUS over
Transport Layer Security (RADIUS/TLS) or RADIUS over Datagram
Transport Layer Security (RADIUS/DTLS).
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. 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 a candidate for any level of
Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7585.
Winter & McCauley Experimental [Page 1]
RFC 7585 RADIUS Peer Discovery October 2015
Copyright Notice
Copyright (c) 2015 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
(http://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
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 6
1.3. Document Status . . . . . . . . . . . . . . . . . . . . . 6
2. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1. DNS Resource Record (RR) Definition . . . . . . . . . . . 7
2.1.1. S-NAPTR . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.2. SRV . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.3. Optional Name Mangling . . . . . . . . . . . . . . . 12
2.2. Definition of the X.509 Certificate Property
SubjectAltName:otherName:NAIRealm . . . . . . . . . . . . 14
3. DNS-Based NAPTR/SRV Peer Discovery . . . . . . . . . . . . . 16
3.1. Applicability . . . . . . . . . . . . . . . . . . . . . . 16
3.2. Configuration Variables . . . . . . . . . . . . . . . . . 16
3.3. Terms . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4. Realm to RADIUS Server Resolution Algorithm . . . . . . . 17
3.4.1. Input . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2. Output . . . . . . . . . . . . . . . . . . . . . . . 18
3.4.3. Algorithm . . . . . . . . . . . . . . . . . . . . . . 18
3.4.4. Validity of Results . . . . . . . . . . . . . . . . . 20
3.4.5. Delay Considerations . . . . . . . . . . . . . . . . 21
3.4.6. Example . . . . . . . . . . . . . . . . . . . . . . . 21
4. Operations and Manageability Considerations . . . . . . . . . 24
5. Security Considerations . . . . . . . . . . . . . . . . . . . 25
6. Privacy Considerations . . . . . . . . . . . . . . . . . . . 26
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 27
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1. Normative References . . . . . . . . . . . . . . . . . . 29
8.2. Informative References . . . . . . . . . . . . . . . . . 30
Appendix A. ASN.1 Syntax of NAIRealm . . . . . . . . . . . . . . 31
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 32
Winter & McCauley Experimental [Page 2]
RFC 7585 RADIUS Peer Discovery October 2015
1. Introduction
RADIUS in all its current transport variants (RADIUS/UDP, RADIUS/TCP,
RADIUS/TLS, and RADIUS/DTLS) requires manual configuration of all
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