One document matched: draft-mayrhofer-enum-xmpp-00.txt
ENUM -- Telephone Number Mapping A. Mayrhofer
Working Group enum.at
Internet-Draft September 29, 2006
Intended status: Informational
Expires: April 2, 2007
IANA Registration for Enumservice 'XMPP'
draft-mayrhofer-enum-xmpp-00
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Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This document requests IANA registration of an Enumservice for
Extensible Messaging and Presence Protocol (XMPP) Uniform Resource
Identifiers (URIs) according to the registration procedure outlined
in RFC 3761.
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Table of Contents
1. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. ENUM-specific XMPP considerations . . . . . . . . . . . . . . . 3
4. ENUM Service Registration - XMPP . . . . . . . . . . . . . . . 4
5. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6. Security & Privacy Considerations . . . . . . . . . . . . . . . 4
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 5
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.1. Normative References . . . . . . . . . . . . . . . . . . . 5
9.2. Informative References . . . . . . . . . . . . . . . . . . 5
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 6
Intellectual Property and Copyright Statements . . . . . . . . . . 7
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1. Change Log
[Note to editors: This section is to be removed before publication -
XML source available on request]
draft-mayrhofer-enum-xmpp-00
initial draft
2. Introduction
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [3].
E.164 Number Mapping (ENUM) [1] uses the Domain Name System (DNS) [7]
to refer from E.164 numbers [2] to Uniform Resource Identifiers
(URIs) [4]. The registration process for Enumservices is described
in section 3 of RFC 3761.
The Extensible Messaging and Presence Protocol (XMPP) [6] provides
means for streaming Extensible Markup Language (XML) [8] elements
between endpoints in close to real time. The XMPP framework is
mainly used to provide instant messaging, presence and streaming
media services.
RFC 4622 [5] registers an Internationalized Resource Identifier (IRI)
and URI scheme for identifying XMPP entities. The Enumservice
specified in this document allows the use of such "xmpp" IRIs/URIs in
the context of ENUM.
3. ENUM-specific XMPP considerations
XMPP IRIs/URIs optionally contain an "Authority Component" (see
section 2.3 of RFC 4622). The presence of such an Authority
Component in an IRI/URI signals the processing application to
authenticate as the user indicated in the URI/IRI rather than using
the preconfigured identity.
In the context of this Enumservice, random clients may discover and
use the XMPP URIs/IRIs associated to an E.164 number, hence in most
cases those clients will not be able to authenticate as requested in
the Authority Component.
Therefore, URIs/IRIs results from processing an XMPP Enumservice
records SHOULD NOT contain an Authority Component.
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4. ENUM Service Registration - XMPP
Enumservice Name: "XMPP"
Enumservice Type: "xmpp"
Enumservice Subtype: n/a
URI Schemes: "xmpp"
Functional Specification:
This Enumservice indicates that the resource identified is an XMPP
IRI/URI.
Security Considerations: see Section 6
Intended Usage: COMMON
Author: Alexander Mayrhofer <mailto:alexander.mayrhofer@enum.at>
5. Example
An example ENUM entry referencing to a XMPP URI could look like:
$ORIGIN 6.4.9.0.6.4.9.7.0.2.4.4.e164.arpa.
@ IN NAPTR 100 10 "u" "E2U+xmpp"
"!^.*$!xmpp:some-user@example.com!" .
(Note: Due to line length constraints, the example record above is
split in two lines)
6. Security & Privacy Considerations
Since ENUM uses DNS - a publicly available database - any information
contained in records provisioned in ENUM domains must be considered
public as well. Even after revoking the DNS entry and removing the
refered resource, copies of the information could still be available.
Information published in ENUM records could reveal associations
between E.164 numbers and their owners - especially if IRIs/URIs
contain personal identifiers or domain names for which ownership
information can be obtained easily.
However, it is important to note that the ENUM record itself does not
need to contain any personal information. It just points to a
location where access to personal information could be granted.
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ENUM records pointing to third party resources can easily be
provisioned on purpose by the ENUM domain owner - so any assumption
about the association between a number and an entity could therefore
be completely bogus unless some kind of identity verification is in
place. This verification is out of scope for this memo.
7. IANA Considerations
This memo requests registration of the "XMPP" Enumservice according
to the definitions in this document and RFC 3761 [1].
8. Acknowledgements
Some text from RFC 4622 was used in the Introduction section of this
document.
9. References
9.1. Normative References
[1] Faltstrom, P. and M. Mealling, "The E.164 to Uniform Resource
Identifiers (URI) Dynamic Delegation Discovery System (DDDS)
Application (ENUM)", RFC 3761, April 2004.
[2] ITU-T, "The international public telecommunication numbering
plan", Recommendation E.164 (02/05), Feb 2005.
[3] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC 2119, March 1997.
[4] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifier (URI): Generic Syntax", STD 66, RFC 3986,
January 2005.
[5] Saint-Andre, P., "Internationalized Resource Identifiers (IRIs)
and Uniform Resource Identifiers (URIs) for the Extensible
Messaging and Presence Protocol (XMPP)", RFC 4622, August 2006.
[6] Saint-Andre, P., Ed., "Extensible Messaging and Presence
Protocol (XMPP): Core", RFC 3920, October 2004.
9.2. Informative References
[7] Mockapetris, P., "Domain names - Implementation and
Specification", STD 13, RFC 1035, November 1987.
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[8] Yergeau, F., Paoli, J., Sperberg-McQueen, C., Bray, T., and E.
Maler, "Extensible Markup Language (XML) 1.0 (Third Edition)",
W3C REC REC-xml-20040204, February 2004.
Author's Address
Alexander Mayrhofer
enum.at GmbH
Karlsplatz 1/9
Wien A-1010
Austria
Phone: +43 1 5056416 34
Email: alexander.mayrhofer@enum.at
URI: http://www.enum.at/
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