FTP Data Connection Assurance

Document Type Expired Internet-Draft (ftpext WG)
Author Gregory Lundberg 
Last updated 2002-05-24
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies an extension to the File Transfer Protocol (FTP) by which a user and server can exchange data port connection information which may then be used to provide connection assurance. Two new commands are introduced. Through use of these commands and their replies, the user and server exchange information allowing verification of the socket addresses for a data connection prior to actual data transmission over the connection. Implementation of this extension is RECOMMENDED.


Gregory Lundberg (lundberg@vr.net)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)