Hi all,In the BEHAVE wg we're working on IPv6-to-IPv4 translation. One prominent protocol that has trouble with this is FTP, so we're thinking of making an FTP ALG part of this. I wrote a draft on how to do this, and I would very much like some feedback. The draft is only 6 pages.
One thing that would be good to know is whether ALL IPv6 FTP clients do EPSV or if there are also ones that do EPRT or, worse, active FTP without issuing EPRT.
Thanks, Iljitsch van Beijnum Begin forwarded message:
Filename: draft-van-beijnum-behave-ftp64 Revision: 01 Title: An FTP Application Layer Gateway for IPv6-to-IPv4 translation Creation_date: 2009-04-27 WG ID: Independent Submission Number_of_pages: 6
Abstract: The only FTP mode that works without changes through an IPv6-to-IPv4 translator is extended passive, introduced in 1998. However, many existing FTP servers don't support this mode, making it impossible to support the File Transfer Protocol through an IPv6-to-IPv4 translator without an Application Layer Gateway. This document describes the behavior of such an ALG.
http://www.ietf.org/internet-drafts/draft-van-beijnum-behave-ftp64-01.txt