Документ взят из кэша поисковой машины. Адрес оригинального документа : http://mirror.msu.net/pub/rfc-editor/rfc-ed-all/pdfrfc/rfc5179.txt.pdf Дата изменения: Wed May 14 01:12:23 2008 Дата индексирования: Sun Sep 12 18:15:02 2010 Кодировка:

Network Working Group Request for Comments: 5179 Category: Standards Track

N. Williams Sun May 2008

Generic Security Service Application Program Interface (GSS-API) Domain-Based Service Names Mapping for the Kerberos V GSS Mechanism Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This document describes the mapping of Generic Security Service Application Program Interface (GSS-API) domain-name-based service principal names onto Kerberos V principal names. Table of Contents 1. 2. 3. 4. 5. 6. Domain-Based Names for the Kerberos Conventions Used in This Document . Internationalization Considerations Examples . . . . . . . . . . . . . Security Considerations . . . . . . Normative References . . . . . . . V . . . . . GSS-API .... .... .... .... .... Mechanism ..... ..... ..... ..... ..... . . . . . . . . . . . . . . . . . . . . . . . . 2 2 2 3 3 3

Williams

Standards Track

[Page 1]


RFC 5179

Kerberos Domain-Based Names

May 2008

1.

Domain-Based Names for the Kerberos V GSS-API Mechanism In accordance with [RFC5178], this document provides the mechanismspecific 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 SHOULD be mapped to Kerberos V principal names as follows: o the name becomes the first (0th) component of the Kerberos V principal name; the becomes the second component of the Kerberos V principal name; the name becomes the third component of the Kerberos V principal name; the realm of the resulting principal name is that which corresponds to the domain name, treated as a hostname.

o

o

o

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 NTT-SRVT-HST-DOMAIN (which has the value 12) but MAY use NT-UNKNOWN instead. 2. 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]. 3. Internationalization Considerations It is unclear, at this time, how best to address internationalization of Kerberos V domain-based principal names. This is because the Kerberos V core protocol internationalization project is incomplete. However, clearly the best way to interoperate when domain-based principal names is to use ACE-encoded domain names [RFC3490] for the hostname and domain Kerberos V domain-based principal name. Therefore mechanism implementations MUST do just that. using Kerberos V internationalized name slots of a Kerberos V GSS-API

Williams

Standards Track

[Page 2]


RFC 5179

Kerberos Domain-Based Names

May 2008

4. o

Examples The domain-based name, of generic form, "ldap@foo.example@ds1.foo.example" may map to a Kerberos V principal name like: "ldap/ds1.foo.example/ foo.example@FOO.EXAMPLE" The domain-based name, of generic form, "kadmin@foo.example@kdc1.foo.example" may map to a Kerberos V principal name like: "kadmin/kdc1.foo.example/ foo.example@FOO.EXAMPLE" Security Considerations See [RFC5178]. It is important for the security of protocols using the Kerberos V GSS-API mechanism and domain-based names, that the realm of domainbased principal names be derived from the hostname, rather than the domain name slots of the input domain-based name string.

o

5.

6.

Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. Linn, J., "Generic Security Service Application Program Interface Version 2, Update 1", RFC 2743, January 2000. Faltstrom, P., Hoffman, P., and A. Costello, "Internationalizing Domain Names in Applications (IDNA)", RFC 3490, March 2003. Neuman, C., Yu, T., Hartman, S., and K. Raeburn, "The Kerberos Network Authentication Service (V5)", RFC 4120, July 2005. 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. Williams, N. and A. Melnikov, "Generic Security Service Application Program Interface (GSS-API) Internationalization and Domain-Based Service Names and Name Type", RFC 5178, May 2008.

[RFC2743]

[RFC3490]

[RFC4120]

[RFC4121]

[RFC5178]

Williams

Standards Track

[Page 3]


RFC 5179

Kerberos Domain-Based Names

May 2008

Author's Address Nicolas Williams Sun Microsystems 5300 Riata Trace Ct. Austin, TX 78727 US EMail: Nicolas.Williams@sun.com

Williams

Standards Track

[Page 4]


RFC 5179

Kerberos Domain-Based Names

May 2008

Full Copyright Statement Copyright (C) The IETF Trust (2008). 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. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its copyrights, patents or patent applications, or other rights that may cover technology that may be required this standard. Please address the information to the ietf-ipr@ietf.org. attention any proprietary to implement IETF at

Williams

Standards Track

[Page 5]