NETWORK WORKING GROUP N. Williams Internet-Draft Sun Expires: December 30, 2004 July 2004 GSS-API Domain-Based Service Names Mapping for the Kerberos V GSS Mechanism draft-williams-krb5-gssapi-domain-based-names-00.txt Status of this Memo By submitting this Internet-Draft, I certify that any applicable patent or other IPR claims of which I am aware have been disclosed, and any of which I become aware will be disclosed, in accordance with RFC 3668. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on December 30, 2004. Copyright Notice Copyright (C) The Internet Society (2004). All Rights Reserved. Abstract This document describes the mapping of GSS-API domainname-based service principal names onto Kerberos V principal names. Williams Expires December 30, 2004 [Page 1] Internet-Draft Kerberos Domain Based Names July 2004 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 . . . . . . . . . . . . . . . . . . . . . . . . 6 Intellectual Property and Copyright Statements . . . . . . . . . 7 Williams Expires December 30, 2004 [Page 2] Internet-Draft Kerberos Domain Based Names July 2004 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]. Williams Expires December 30, 2004 [Page 3] Internet-Draft Kerberos Domain Based Names July 2004 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 [RFC1964]. GSS_C_NT_DOMAINBASED_SERVICE name are mapped to Kerberos V principal names as follows: o the name becomes the first (0th) component of the Kerberos V principal name; o the name becomes the second component of the Kerberos V principal name; if the name is missing in the GSS name then a default domain name MUST be substituted (though no mechanism for determining this default is given here; this is an implementation-specific detail); o the , if present, 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, or, if none can be determined in this way, then the realm of the hostname, if present, and, finally, if that is not possible, the default realm for the GSS-API caller. The same name canonicalization considerations and methods as used elsewhere in the Kerberos V GSS-API mechanism [RFC1964] and Kerberos V [RFC1510] in general apply here. Williams Expires December 30, 2004 [Page 4] Internet-Draft Kerberos Domain Based Names July 2004 3. Examples o "ldap@@ds1.example.tld" may map to "ldap/example.tld/ ds1.example.tld@EXAMPLE.TLD" o "ldap@example.tld@ds1.example.tld" may map to "ldap/example.tld/ ds1.example.tld@EXAMPLE.TLD" o "kadmin@@kdc1.example.tld" may map to "kadmin/example.tld/ kdc1.example.tld@EXAMPLE.TLD" o "kadmin@example.tld@kdc1.example.tld" may map to "kadmin/ example.tld/kdc1.example.tld@EXAMPLE.TLD" Williams Expires December 30, 2004 [Page 5] Internet-Draft Kerberos Domain Based Names July 2004 4. Security Considerations See [DOMAIN-BASED-NAMES]. 5 Normative [RFC1510] Kohl, J. and B. Neuman, "The Kerberos Network Authentication Service (V5)", RFC 1510, September 1993. [RFC1964] Linn, J., "The Kerberos Version 5 GSS-API Mechanism", RFC 1964, June 1996. [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. Author's Address Nicolas Williams Sun Microsystems 5300 Riata Trace Ct Austin, TX 78727 US EMail: Nicolas.Williams@sun.com Williams Expires December 30, 2004 [Page 6] Internet-Draft Kerberos Domain Based Names July 2004 Intellectual Property Statement 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. 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Disclaimer of Validity 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 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. Copyright Statement Copyright (C) The Internet Society (2004). 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. Williams Expires December 30, 2004 [Page 7]