Captive Portal Architecture
draft-ietf-capport-architecture-10
Internet Engineering Task Force K. Larose
Internet-Draft Agilicus
Intended status: Informational D. Dolson
Expires: 27 March 2021
H. Liu
Google
23 September 2020
Captive Portal Architecture
draft-ietf-capport-architecture-10
Abstract
This document describes a captive portal architecture. Network
provisioning protocols such as DHCP or Router Advertisements (RAs),
an optional signaling protocol, and an HTTP API are used to provide
the solution.
Status of This Memo
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This Internet-Draft will expire on 27 March 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
Larose, et al. Expires 27 March 2021 [Page 1]
Internet-Draft Captive Portal Architecture September 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 5
2. Components . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1. User Equipment . . . . . . . . . . . . . . . . . . . . . 6
2.2. Provisioning Service . . . . . . . . . . . . . . . . . . 7
2.2.1. DHCP or Router Advertisements . . . . . . . . . . . . 8
2.2.2. Provisioning Domains . . . . . . . . . . . . . . . . 8
2.3. Captive Portal API Server . . . . . . . . . . . . . . . . 8
2.4. Captive Portal Enforcement Device . . . . . . . . . . . . 9
2.5. Captive Portal Signal . . . . . . . . . . . . . . . . . . 10
2.6. Component Diagram . . . . . . . . . . . . . . . . . . . . 10
3. User Equipment Identity . . . . . . . . . . . . . . . . . . . 12
3.1. Identifiers . . . . . . . . . . . . . . . . . . . . . . . 12
3.2. Recommended Properties . . . . . . . . . . . . . . . . . 12
3.2.1. Uniquely Identify User Equipment . . . . . . . . . . 13
3.2.2. Hard to Spoof . . . . . . . . . . . . . . . . . . . . 13
3.2.3. Visible to the API Server . . . . . . . . . . . . . . 13
3.2.4. Visible to the Enforcement Device . . . . . . . . . . 14
3.3. Evaluating Types of Identifiers . . . . . . . . . . . . . 14
3.4. Example Identifier Types . . . . . . . . . . . . . . . . 14
3.4.1. Physical Interface . . . . . . . . . . . . . . . . . 14
3.4.2. IP Address . . . . . . . . . . . . . . . . . . . . . 15
3.4.3. Media Access Control (MAC) Address . . . . . . . . . 16
3.5. Context-free URI . . . . . . . . . . . . . . . . . . . . 16
4. Solution Workflow . . . . . . . . . . . . . . . . . . . . . . 17
4.1. Initial Connection . . . . . . . . . . . . . . . . . . . 17
4.2. Conditions About to Expire . . . . . . . . . . . . . . . 17
4.3. Handling of Changes in Portal URI . . . . . . . . . . . . 18
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
7. Security Considerations . . . . . . . . . . . . . . . . . . . 19
7.1. Trusting the Network . . . . . . . . . . . . . . . . . . 19
7.2. Authenticated APIs . . . . . . . . . . . . . . . . . . . 19
7.3. Secure APIs . . . . . . . . . . . . . . . . . . . . . . . 20
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