"This document describes a mechanism that can be used by FTP clients and servers to implement security and authentication using the TLS protocol defined by RFC 2246@ ""The TLS Protocol Version 1.0.""@ and the extensions to the FTP protocol defined by RFC 2228@ ""FTP Security Extensions"". It describes the subset of the extensions that are required and the parameters to be used@ discusses some of the policy issues that clients and servers will need to take@ considers some of the implications of those policies@ and discusses some expected behaviours of implementations to allow interoperation. This document is intended to provide TLS support for FTP in a similar way to that provided for SMTP in RFC 2487@ ""SMTP Service Extension for Secure SMTP over Transport Layer Security""@ and HTTP in RFC 2817@ ""Upgrading to TLS Within HTTP/1.1."". This specification is in accordance with RFC 959@ ""File Transfer Protocol"". It relies on RFC 2246@ ""The TLS Protocol Version 1.0.""@ and RFC 2228@ ""FTP Security Extensions""."