Network Working Group C. Rigney
Request for Comments: 2866 Livingston
Category: Informational June 2000
Obsoletes: 2139
RADIUS Accounting
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2000). All Rights Reserved.
Abstract
This document describes a protocol for carrying accounting
information between a Network Access Server and a shared Accounting
Server.
Implementation Note
This memo documents the RADIUS Accounting protocol. The early
deployment of RADIUS Accounting was done using UDP port number 1646,
which conflicts with the "sa-msg-port" service. The officially
assigned port number for RADIUS Accounting is 1813.
Table of Contents
1. Introduction .................................... 2
1.1 Specification of Requirements ................. 3
1.2 Terminology ................................... 3
2. Operation ....................................... 4
2.1 Proxy ......................................... 4
3. Packet Format ................................... 5
4. Packet Types ................................... 7
4.1 Accounting-Request ............................ 8
4.2 Accounting-Response ........................... 9
5. Attributes ...................................... 10
5.1 Acct-Status-Type .............................. 12
5.2 Acct-Delay-Time ............................... 13
5.3 Acct-Input-Octets ............................. 14
5.4 Acct-Output-Octets ............................ 15
5.5 Acct-Session-Id ............................... 15
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RFC 2866 RADIUS Accounting June 2000
5.6 Acct-Authentic ................................ 16
5.7 Acct-Session-Time ............................. 17
5.8 Acct-Input-Packets ............................ 18
5.9 Acct-Output-Packets ........................... 18
5.10 Acct-Terminate-Cause .......................... 19
5.11 Acct-Multi-Session-Id ......................... 21
5.12 Acct-Link-Count ............................... 22
5.13 Table of Attributes ........................... 23
6. IANA Considerations ............................. 25
7. Security Considerations ......................... 25
8. Change Log ...................................... 25
9. References ...................................... 26
10. Acknowledgements ................................ 26
11. Chair's Address ................................. 26
12. Author's Address ................................ 27
13. Full Copyright Statement ........................ 28
1. Introduction
Managing dispersed serial line and modem pools for large numbers of
users can create the need for significant administrative support.
Since modem pools are by definition a link to the outside world, they
require careful attention to security, authorization and accounting.
This can be best achieved by managing a single "database" of users,
which allows for authentication (verifying user name and password) as
well as configuration information detailing the type of service to
deliver to the user (for example, SLIP, PPP, telnet, rlogin).
The RADIUS (Remote Authentication Dial In User Service) document [2]
specifies the RADIUS protocol used for Authentication and
Authorization. This memo extends the use of the RADIUS protocol to
cover delivery of accounting information from the Network Access
Server (NAS) to a RADIUS accounting server.
This document obsoletes RFC 2139 [1]. A summary of the changes
between this document and RFC 2139 is available in the "Change Log"
appendix.
Key features of RADIUS Accounting are:
Client/Server Model
A Network Access Server (NAS) operates as a client of the
RADIUS accounting server. The client is responsible for
passing user accounting information to a designated RADIUS
accounting server.
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RFC 2866 RADIUS Accounting June 2000
The RADIUS accounting server is responsible for receiving the
datatracker.ietf.org