IETF D. McWalter Internet-Draft Data Connection Ltd Expires: May 17, 2007 November 13, 2006 Uniform Resource Identifier (URI) MIB draft-mcwalter-uri-mib-00.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. 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 May 17, 2007. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This MIB module defines textual conventions to represent STD 66 [RFC3986] Uniform Resource Identifiers (URIs). The intent is that these textual conventions will be imported and used in MIB modules that would otherwise define their own representation(s). McWalter Expires May 17, 2007 [Page 1] Internet-Draft URI MIB November 2006 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Internet-Standard Management Framework . . . . . . . . . . 3 3. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . 5 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 6 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.1 Normative References . . . . . . . . . . . . . . . . . . . 6 7.2 Informative References . . . . . . . . . . . . . . . . . . 7 Author's Address . . . . . . . . . . . . . . . . . . . . . . . 7 Intellectual Property and Copyright Statements . . . . . . . . 8 McWalter Expires May 17, 2007 [Page 2] Internet-Draft URI MIB November 2006 1. Introduction This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. It defines a textual convention to represent STD 66 [RFC3986] URIs. 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 RFC 2119 [RFC2119]. 2. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580]. 3. Definitions URI-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, mib-2 FROM SNMPv2-SMI TEXTUAL-CONVENTION FROM SNMPv2-TC; langTagMIB MODULE-IDENTITY LAST-UPDATED "200611130000Z" -- 13 November 2006 ORGANIZATION "IETF Operations and Management Area" CONTACT-INFO "EMail: ops-area@ietf.org" DESCRIPTION "This MIB module defines a textual conventions for representing BCP 47 language tags." REVISION "200611130000Z" -- 13 November 2006 DESCRIPTION "Initial revision, published as RFC yyyy. Copyright (C) The IETF Trust (2006). The initial version of this MIB module was published in RFC yyyy; for full legal notices see the RFC itself. Supplementary information may be available at: McWalter Expires May 17, 2007 [Page 3] Internet-Draft URI MIB November 2006 http://www.ietf.org/copyrights/ianamib.html." -- RFC Ed.: replace yyyy with actual RFC number & remove this note ::= { mib-2 XXX } -- RFC Ed.: replace XXX with IANA-assigned number & remove this note Uri ::= TEXTUAL-CONVENTION DISPLAY-HINT "255a" STATUS current DESCRIPTION "A Uniform Resource Identifier (URI) as defined by STD 66. This URI MUST be a normalized as defined in section 6 of RFC 3986 STD 66. STD 66 defines that some parts of a URI are case-insensitive, but objects using this textual convention MUST use normalized URIs. The purpose of this restriction is to help provide unique URIs for use as MIB table indexes. Note that normalization of URIs does not by itself provide uniqueness: Two textually distinct normalized URIs may be equivalent." REFERENCE "RFC 3986 STD 66 and RFC 3305" SYNTAX OCTET STRING Uri255 ::= TEXTUAL-CONVENTION DISPLAY-HINT "255a" STATUS current DESCRIPTION "A Uniform Resource Identifier (URI) as defined by STD 66. This URI MUST be a normalized as defined in section 6 of RFC 3986 STD 66. STD 66 defines that some parts of a URI are case-insensitive, but objects using this textual convention MUST use normalized URIs. The purpose of this restriction is to help provide unique URIs for use as MIB table indexes. Note that normalization of URIs does not by itself provide uniqueness: Two textually distinct normalized URIs may be equivalent. STD 66 URIs are of unlimited length. Objects using this textual convention impose an arbitrary length limit on the URIs that they can represent. If no length restriction is required, then objects SHOULD use the 'Uri' textual convention instead." REFERENCE "RFC 3986 STD 66 and RFC 3305" SYNTAX OCTET STRING (SIZE (0..255)) Uri1024 ::= TEXTUAL-CONVENTION DISPLAY-HINT "1024a" STATUS current McWalter Expires May 17, 2007 [Page 4] Internet-Draft URI MIB November 2006 DESCRIPTION "A Uniform Resource Identifier (URI) as defined by STD 66. This URI MUST be a normalized as defined in section 6 of RFC 3986 STD 66. STD 66 defines that some parts of a URI are case-insensitive, but objects using this textual convention MUST use normalized URIs. The purpose of this restriction is to help provide unique URIs for use as MIB table indexes. Note that normalization of URIs does not by itself provide uniqueness: Two textually distinct normalized URIs may be equivalent. STD 66 URIs are of unlimited length. Objects using this textual convention impose an arbitrary length limit on the URIs that they can represent. If no length restriction is required, then objects SHOULD use the 'Uri' textual convention instead." REFERENCE "RFC 3986 STD 66 and RFC 3305" SYNTAX OCTET STRING (SIZE (0..1024)) END 4. Security Considerations Whenever using limited-size arrays to implement objects such as those defined by this MIB module, implementers are encouraged to check length and bounds on input and memory in order to avoid introducing buffer overflow vulnerabilities. This advice is particularly important for URLs, which have frequently been exploited in this way in recent years. SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPSec), even then, there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB module. It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410], section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy). Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an McWalter Expires May 17, 2007 [Page 5] Internet-Draft URI MIB November 2006 instance of this MIB module is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them. 5. IANA Considerations URI-MIB should be rooted under the mib-2 subtree. IANA is requested to assign { mib-2 XXX } to the URI-MIB module specified in this document. 6. Acknowledgements This module was generated by editing together suggestions from Randy Presuhn, Dan Romascanu, Bill Fenner, Jeurgen Schoenwaelder, and others. The 'author' was in this case more of a 'secretary'." 7. References 7.1 Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC3305] Mealling, M. and R. Denenberg, "Report from the Joint W3C/ IETF URI Planning Interest Group: Uniform Resource Identifiers (URIs), URLs, and Uniform Resource Names (URNs): Clarifications and Recommendations", RFC 3305, draft-mealling-uri-ig-02 (work in progress), Current Status INFORMATIONAL, August 2002. [RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform Resource Identifier (URI): Generic Syntax", STD 66, RFC 3986, Was Internet-Draft draft-fielding-uri-rfc2396bis-07, Current Status STANDARD, January 2005. McWalter Expires May 17, 2007 [Page 6] Internet-Draft URI MIB November 2006 7.2 Informative References [RFC2434] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 2434, October 1998. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC3692] Narten, T., "Assigning Experimental and Testing Numbers Considered Useful", BCP 82, RFC 3692, draft-narten-iana-experimental-allocations-05 (work in progress), Current Status BEST CURRENT PRACTICE, January 2004. Author's Address David McWalter Data Connection Ltd 100 Church Street Enfield EN2 6BQ United Kingdom Email: dmcw@dataconnection.com McWalter Expires May 17, 2007 [Page 7] Internet-Draft URI MIB November 2006 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, 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. Copyright Statement Copyright (C) The IETF Trust (2006). 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. McWalter Expires May 17, 2007 [Page 8]