The Network Access Identifier
RFC 7542
Document | Type |
RFC - Proposed Standard
(May 2015; Errata)
Obsoletes RFC 4282
|
|
---|---|---|---|
Last updated | 2018-08-16 | ||
Replaces | draft-dekok-radext-nai | ||
Stream | IETF | ||
Formats | plain text pdf html bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Stefan Winter | ||
Shepherd write-up | Show (last changed 2014-12-04) | ||
IESG | IESG state | RFC 7542 (Proposed Standard) | |
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | BenoƮt Claise | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) A. DeKok Request for Comments: 7542 FreeRADIUS Obsoletes: 4282 May 2015 Category: Standards Track ISSN: 2070-1721 The Network Access Identifier Abstract In order to provide inter-domain authentication services, it is necessary to have a standardized method that domains can use to identify each other's users. This document defines the syntax for the Network Access Identifier (NAI), the user identifier submitted by the client prior to accessing resources. This document is a revised version of RFC 4282. It addresses issues with international character sets and makes a number of other corrections to RFC 4282. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7542. DeKok Standards Track [Page 1] RFC 7542 The Network Access Identifier May 2015 Copyright Notice Copyright (c) 2015 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. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. DeKok Standards Track [Page 2] RFC 7542 The Network Access Identifier May 2015 Table of Contents 1. Introduction ....................................................4 1.1. Terminology ................................................6 1.2. Requirements Language ......................................7 1.3. Purpose ....................................................7 1.4. Motivation .................................................9 2. NAI Definition .................................................10 2.1. UTF-8 Syntax and Normalization ............................10 2.2. Formal Syntax .............................................11 2.3. NAI Length Considerations .................................11 2.4. Support for Username Privacy ..............................12 2.5. International Character Sets ..............................13 2.6. The Normalization Process .................................14 2.6.1. Issues with the Normalization Process ..............15 2.7. Use in Other Protocols ....................................16 2.8. Using the NAI Format for Other Identifiers ................17 3. Routing inside of AAA Systems ..................................18 3.1. Compatibility with Email Usernames ........................19 3.2. Compatibility with DNS ....................................20 3.3. Realm Construction ........................................20 3.3.1. Historical Practices ...............................21 3.4. Examples ..................................................22 4. Security Considerations ........................................23 4.1. Correlation of Identities over Time and Protocols .........23 4.2. Multiple Identifiers ......................................24 5. Administration of Names ........................................25 6. References .....................................................26Show full document text