Domain Name System Media Types
RFC 4027
Document | Type |
RFC - Informational
(May 2005; No errata)
Was draft-josefsson-mime-dns (individual in app area)
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Author | Simon Josefsson | ||
Last updated | 2013-03-02 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4027 (Informational) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ted Hardie | ||
Send notices to | (None) |
Network Working Group S. Josefsson Request for Comments: 4027 April 2005 Category: Informational Domain Name System Media Types Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2005). Abstract This document registers the media types application/dns and text/dns in accordance with RFC 2048. The application/dns media type is used to identify data on the detached Domain Name System (DNS) format described in RFC 2540. The text/dns media type is used to identify master files as described in RFC 1035. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. MIME Type Registration of application/dns . . . . . . . . . . 2 3. MIME Type Registration of text/dns . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . 4 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 4 A. Disclaimer and License . . . . . . . . . . . . . . . . . . . . 5 Normative References . . . . . . . . . . . . . . . . . . . . . 5 Informative References . . . . . . . . . . . . . . . . . . . . 5 Author's Address . . . . . . . . . . . . . . . . . . . . . . . 5 Full Copyright Statements. . . . . . . . . . . . . . . . . . . 6 1. Introduction Domain Name System (DNS) [1] information is traditionally stored in text files, so-called master files or zone files. The format is described in section 5 of RFC 1035 [2]. DNS data can also be stored in a "detached" format, intended for archiving purposes, described in RFC 2540 [4]. Josefsson Informational [Page 1] RFC 4027 Domain Name System Media Types April 2005 This document registers MIME media types for the two data formats, with the registration procedures described in RFC 2048 [3]. 2. MIME Type Registration of application/dns To: ietf-types@iana.org Subject: Registration of MIME media type application/dns MIME media type name: application MIME subtype name: dns Required parameters: None. Optional parameters: None. Encoding considerations: The data format is binary, and data must be transfered unmodified. Using encodings intended for textual parts is not recommended. Security considerations: This media type identifies content as being detached DNS information, as documented in RFC 2540 [4]. This data may be security relevant as per RFC 2538 [7] or may be secured information as per RFC 2535 [6]. Securing the content further may be done with standard techniques, such as OpenPGP [5] or CMS [9], but this is outside of the scope here. Further security assessments are not available at this point. Interoperability considerations: The encoding of detached DNS information is, unlike textual master files, well defined. No further interoperability considerations are known. Published specification: The format of data that could be tagged with this media type is documented in RFC 2540 [4]. Applications that use this media type: DNS-related software, including software storing and using certificates stored in DNS. Additional information: Magic number(s): None. File extension(s): Unknown. Macintosh File Type Code(s): Unknown. Person & email address to contact for further information: Simon Josefsson simon@josefsson.org Intended usage: LIMITED USE Josefsson Informational [Page 2] RFC 4027 Domain Name System Media Types April 2005 Author/change controller: simon@josefsson.org 3. MIME Type Registration of text/dns To: ietf-types@iana.org Subject: Registration of MIME media type text/dns MIME media type name: text MIME subtype name: dns Required parameters: None. Optional parameters: None. Encoding considerations: The data is textual and should be transfered in a line-oriented mode. Text literals may contain CRLF within the text. Binary transport is possible between systems that use the same end-of-line conventions. Master files are in general ASCII, but non-ASCII octet values may occur and are treated as opaque values by DNS software (compare RFC 1035, section 5). The master file format permits encoding arbitrary octet values by using the "\DDD" encoding. The use of "\DDD" encoding can be more reliable than transporting non-ASCII through MIME transports, if data passes through a gateway that re-encodes the character data. Security considerations: This media type identifies content as beingShow full document text