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Versions: 00 01 02 03 04 05 RFC 5179

NETWORK WORKING GROUP                                        N. Williams
Internet-Draft                                                       Sun
Expires: April 22, 2006                                 October 19, 2005


   GSS-API Domain-Based Service Names Mapping for the Kerberos V GSS
                               Mechanism
        draft-ietf-kitten-krb5-gssapi-domain-based-names-01.txt

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Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This document describes the mapping of GSS-API domainname-based
   service principal names onto Kerberos V principal names.









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Table of Contents

   1.  Conventions used in this document . . . . . . . . . . . . . . . 3
   2.  Domain-Based Names for the Kerberos V GSS-API Mechanism . . . . 4
   3.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   5.  Normative . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
       Author's Address  . . . . . . . . . . . . . . . . . . . . . . . 7
       Intellectual Property and Copyright Statements  . . . . . . . . 8










































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1.  Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].














































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2.  Domain-Based Names for the Kerberos V GSS-API Mechanism

   In accordance with [DOMAIN-BASED-NAMES] this document provides the
   mechanism-specific details needed to implement GSS-API [RFC2743]
   domain-based service names with the Kerberos V GSS-API mechanism
   [RFC4121].

   GSS_C_NT_DOMAINBASED_SERVICE name are mapped to Kerberos V principal
   names as follows:

   o  the <service> name becomes the first (0th) component of the
      Kerberos V principal name;

   o  the <hostname> becomes the second component of the Kerberos V
      principal name;

   o  the <domain> name becomes the third component of the Kerberos V
      principal name;

   o  the realm of the resulting principal name is that which
      corresponds to the domain name, treated as a hostname.

   The same name canonicalization considerations and methods as used
   elsewhere in the Kerberos V GSS-API mechanism [RFC4121] and Kerberos
   V [RFC4120] in general apply here.

   Implementations SHOULD use a Kerberos V name-type of NT-SRV-HST-
   DOMAIN (integral value TBD) but MAY use NT-UNKNOWN instead.























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3.  Examples

   o  The domain based name, of generic form,
      "ldap@Example.TLD@ds1.Example.TLD" may map to a Kerberos V
      principal name like: "ldap/ds1.example.tld/
      example.tld@EXAMPLE.TLD"

   o  The domain based name, of generic form,
      "kadmin@Example.TLD@kdc1.Example.TLD" may map to a Kerberos V
      principal name like: "kadmin/kdc1.example.tld/
      example.tld@EXAMPLE.TLD"








































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4.  Security Considerations

   See [DOMAIN-BASED-NAMES].

5.  Normative

   [DOMAIN-BASED-NAMES]
              Williams, N., "GSS-API Domain-Based Service Names and Name
              Type".

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2743]  Linn, J., "Generic Security Service Application Program
              Interface Version 2, Update 1", RFC 2743, January 2000.

   [RFC4120]  Neuman, C., Yu, T., Hartman, S., and K. Raeburn, "The
              Kerberos Network Authentication Service (V5)", RFC 4120,
              July 2005.

   [RFC4121]  Zhu, L., Jaganathan, K., and S. Hartman, "The Kerberos
              Version 5 Generic Security Service Application Program
              Interface (GSS-API) Mechanism: Version 2", RFC 4121,
              July 2005.



























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Author's Address

   Nicolas Williams
   Sun Microsystems
   5300 Riata Trace Ct
   Austin, TX  78727
   US

   Email: Nicolas.Williams@sun.com










































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Intellectual Property Statement

   The IETF takes no position regarding the validity or scope of any
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   pertain to the implementation or use of the technology described in
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Disclaimer of Validity

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Copyright Statement

   Copyright (C) The Internet Society (2005).  This document is subject
   to the rights, licenses and restrictions contained in BCP 78, and
   except as set forth therein, the authors retain all their rights.


Acknowledgment

   Funding for the RFC Editor function is currently provided by the
   Internet Society.




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