GEOPRIV M. Thomson
Internet-Draft Microsoft
Intended status: Informational R. Bellis
Expires: October 7, 2013 Nominet UK
April 5, 2013
Location Information Server (LIS) Discovery using IP address and Reverse
DNS
draft-ietf-geopriv-res-gw-lis-discovery-05
Abstract
The residential gateway is a device that has become an integral part
of home networking equipment. Discovering a Location Information
Server (LIS) is a necessary part of acquiring location information
for location-based services. However, discovering a LIS when a
residential gateway is present poses a configuration challenge,
requiring a method that is able to work around the obstacle presented
by the gateway.
This document describes a solution to this problem. The solution
provides alternative domain names as input to the LIS discovery
process based on the network addresses assigned to a Device.
Status of this Memo
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This Internet-Draft will expire on October 7, 2013.
Copyright Notice
Copyright (c) 2013 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions used in this document . . . . . . . . . . . . . . 4
3. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Residential Gateway . . . . . . . . . . . . . . . . . . . 6
3.2. Residential Gateway Security Features . . . . . . . . . . 7
4. IP-based DNS Solution . . . . . . . . . . . . . . . . . . . . 8
4.1. Identification of IP Addresses . . . . . . . . . . . . . . 8
4.2. Domain Name Selection . . . . . . . . . . . . . . . . . . 9
4.3. When To Use The Reverse DNS Method . . . . . . . . . . . . 9
4.4. Private Address Spaces . . . . . . . . . . . . . . . . . . 10
4.5. Necessary Assumptions and Restrictions . . . . . . . . . . 11
4.6. Failure Modes . . . . . . . . . . . . . . . . . . . . . . 11
4.7. Deployment Considerations . . . . . . . . . . . . . . . . 11
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. IAB Considerations . . . . . . . . . . . . . . . . . . . . . . 15
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.1. Normative References . . . . . . . . . . . . . . . . . . . 17
8.2. Informative References . . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 19
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1. Introduction
A Location Information Server (LIS) is a service provided by an
access network. The LIS uses knowledge of the access network
topology and other information to generate location for Devices.
Devices within an access network are able to acquire location
information from a LIS.
The relationship between a Device and an access network might be
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