INTERNET-DRAFT M. Yevstifeyev Intended Status: Informational July 2, 2011 Obsoletes: 1545, 1639 (if approved) Expires: January 3, 2012 Moving RFC 1545 and RFC 1639 to Historic draft-yevstifeyev-foobar-to-historic-00 Abstract RFC 1639 and its predecessor - RFC 1545 - specified the way to denote network addresses in the format other than that used with IPv4 when establishing File Transfer Protocol (FTP) data connection. Because of some reasons, described in this document, these commands are now deprecated and their use is discouraged; in order to reflect this it moves RFC 1545 and RFC 1639 to Historic status and obsoletes these two RFCs. Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and 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/1id-abstracts.html The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html Copyright and License Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents Yevstifeyev Expires January 3, 2012 [Page 1] INTERNET DRAFT RFC 1639 & RFC 1545 to Historic July 2, 2011 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. 1. Introduction and Background RFC 1639 [RFC1639] and its predecessor - RFC 1545 [RFC1545] - specified the way to denote network addresses in the format other than that used with IPv4 [RFC0791] when establishing File Transfer Protocol (FTP) [RFC0959] data connection. This facility was provided by LPRT and LPSV commands, which stand for "long port" and "long passive" and were designed to provide the same functions as standard FTP PORT and PASV commands, but allowed specifying the "address family" parameter in addition to the address itself. This technique was named FTP Operation Over Big Address Records, abbreviated FOOBAR. Because of some reasons, described in Section 2, FOOBAR commands are now deprecated; in order to reflect it this memo moves RFC 1545 and RFC 1639 to Historic status. It also obsoletes these two RFCs. 2. FOOBAR is Obsolete This section explains why FOOBAR is currently obsolete. With publication of RFC 2428 [RFC2428], it became clear that EPRT and EPSV commands, which it defines, can fully cover the functionality of the aforementioned LPRT and LPSV commands. The main difference between these two approaches is that LPRT and LPSV used a special FOOBAR-specific "address family" parameter for identifying the used address format (whereas the first 16 FOOBAR "address family" identifiers were the reused IP version numbers). EPRT and EPSV, on the other hand, make use of common address family identifier, as primarily employed by RIPv2 [RFC2453]. Even though both techniques were designed for the same reason, EPRT and EPSV are now considered to be a preferred way of establishing FTP data connection using non-IPv4 addresses; use of LPRT and LPSV is strongly discouraged in favor of EPRT and EPSV. Moreover, RFC 1639 is an Experimental RFC while RFC 2428 is a Standards Track one. Upon creation of IANA registry for FTP commands per RFC 5797 [RFC5797], LPRT and LPSV commands were already designated as historical. Section 2.5 of RFC 5797 says: The following commands were specified as part of the "FOOBAR" IPng effort in RFC 1545 [RFC1545] and, later, RFC 1639 [RFC1639] and are Yevstifeyev Expires January 3, 2012 [Page 2] INTERNET DRAFT RFC 1639 & RFC 1545 to Historic July 2, 2011 now obsolete. They are listed in the registry with the immutable pseudo FEAT code "hist". LPRT, LPSV However, either RFC 2428 and RFC 5797 failed to reclassify RFC 1639 and RFC 1545 as Historic, which this document does. 3. Action According to RFC 2026 [RFC2026] and [HISTORIC], RFC 1545 and RFC 1639 are reclassified as Historic by this document. 4. Security Considerations This document is of administrative nature only and therefore there are no security relations related to it. 5. IANA Considerations LPRT and LPSV commands are already listed in FTP Commands and Extensions registry [RFC5797] as 'historical'. The only action this document requests IANA to perform is to list this RFC as an additional reference for these two commands. 6. References 6.1. Normative References [RFC1639] Piscitello, D., "FTP Operation Over Big Address Records (FOOBAR)", RFC 1639, June 1994. [RFC2428] Allman, M., Ostermann, S., and C. Metz, "FTP Extensions for IPv6 and NATs", RFC 2428, September 1998. [RFC5797] Klensin, J. and A. Hoenes, "FTP Command and Extension Registry", RFC 5797, March 2010. 6.2. Informative References [HISTORIC] IESG, "IESG Statement on Designating RFCs as Historic", IESG Statement, June 2011, . [RFC0959] Postel, J. and J. Reynolds, "File Transfer Protocol", STD 9, RFC 959, October 1985. Yevstifeyev Expires January 3, 2012 [Page 3] INTERNET DRAFT RFC 1639 & RFC 1545 to Historic July 2, 2011 [RFC0791] Postel, J., "Internet Protocol", STD 5, RFC 791, September 1981. [RFC1545] Piscitello, D., "FTP Operation Over Big Address Records (FOOBAR)", RFC 1545, November 1993. [RFC2026] Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9, RFC 2026, October 1996. [RFC2453] Malkin, G., "RIP Version 2", STD 56, RFC 2453, November 1998. Authors' Addresses Mykyta Yevstifeyev 8 Kuzovkov St., Apt 25 Kotovsk Ukraine EMail: evnikita2@gmail.com Yevstifeyev Expires January 3, 2012 [Page 4]