Dynamic Authorization Proxying in Remote Authorization Dial-In User Service Protocol (RADIUS)
draft-ietf-radext-coa-proxy-10

Document Type Active Internet-Draft (radext WG)
Last updated 2019-03-26 (latest revision 2019-01-22)
Replaces draft-dekok-radext-coa-proxy
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Network Working Group                                        DeKok, Alan
INTERNET-DRAFT                                                FreeRADIUS
Updates: 5176, 5580                                          J. Korhonen
Category: Standards Track
<draft-ietf-radext-coa-proxy-10.txt>
22 January 2019

                   Dynamic Authorization Proxying in
      Remote Authorization Dial-In User Service Protocol (RADIUS)
                   draft-ietf-radext-coa-proxy-10.txt

Abstract

   RFC 5176 defines Change of Authorization (CoA) and Disconnect Message
   (DM) behavior for RADIUS.  That document suggests that proxying these
   messages is possible, but gives no guidance as to how it is done.
   This specification updates RFC 5176 to correct that omission for
   scenarios where networks use Realm-based proxying as defined in RFC
   7542.  This specification also updates RFC 5580 to allow the
   Operator-Name attribute in CoA-Request and Disconnect-Request
   packets.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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   Drafts.

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   This Internet-Draft will expire on July 22, 2019.

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Copyright Notice

   Copyright (c) 2019 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.

DeKok, Alan                 Proposed Standard                   [Page 2]
INTERNET-DRAFT  Dynamic Authorization Proxying in RADIUS 22 January 2019

Table of Contents

1.  Introduction .............................................    4
   1.1.  Terminology .........................................    4
   1.2.  Requirements Language ...............................    5
2.  Problem Statement ........................................    6
   2.1.  Typical RADIUS Proxying .............................    6
   2.2.  CoA Processing ......................................    7
   2.3.  Failure of CoA Proxying .............................    7
3.  How to Perform CoA Proxying ..............................    8
   3.1.  Changes to Access-Request and Accounting-Request pack    9
   3.2.  Proxying of CoA-Request and Disconnect-Request packet    9
   3.3.  Reception of CoA-Request and Disconnect-Request packe   10
   3.4.  Operator-NAS-Identifier .............................   11
4.  Requirements .............................................   14
   4.1.  Requirements on Home Servers ........................   14
   4.2.  Requirements on Visited Networks ....................   14
   4.3.  Requirements on Proxies .............................   15
      4.3.1.  Security Requirements on Proxies ...............   15
      4.3.2.  Filtering Requirements on Proxies ..............   16
5.  Functionality ............................................   17
   5.1.  User Login ..........................................   17
   5.2.  CoA Proxying ........................................   17
6.  Security Considerations ..................................   18
   6.1.  RADIUS Security and Proxies .........................   19
   6.2.  Security of the Operator-NAS-Identifier Attribute ...   19
7.  IANA Considerations ......................................   20
8.  References ...............................................   20
   8.1.  Normative References ................................   20
   8.2.  Informative References ..............................   21

DeKok, Alan                 Proposed Standard                   [Page 3]
INTERNET-DRAFT  Dynamic Authorization Proxying in RADIUS 22 January 2019
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