IPv6-to-IPv4 translation FTP considerations
Iljitsch van Beijnum
Abstract
Iljitsch van Beijnum
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.
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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.
Key concepts: File Transfer Protocol, IPv4, Computer science, IPv6, SSH File Transfer Protocol, Gateway (web page), Server, Computer network