what information is displayed in clear text from the ftp header
all transmissions
title: FTPS text: the application layer wrapper, Secure Sockets Layer. This protocol enabled applications to communicate across a network in a private and secure fashion, discouraging eavesdropping, tampering, and message forgery. While it could add security to any protocol that uses reliable connections, such as TCP, it was most commonly used by Netscape with HTTP to form HTTPS. The SSL protocol was eventually applied to FTP, with a draft Request for Comments (RFC) published in late 1996. An official IANA port was registered shortly thereafter. However, the RFC was not finalized until 2005. Two separate methods were developed to invoke client security for title: File Transfer Protocol text: File Transfer Protocol The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files between a client and server on a computer network. FTP is built on a client-server model architecture using separate control and data connections between the client and the server. FTP users may authenticate themselves with a clear-text sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS) title: FTPS text: commands based on server encryption policy. The secure command channel mode can be entered through the issue of either the AUTH TLS or AUTH SSL commands. After such time, all command control between the FTPS client and server are assumed to be encrypted. It is generally advised to enter such a state prior to user authentication and authorization in order to avoid the eavesdropping of user name and password data by third parties. The secure data channel can be entered through the issue of the PROT command. It is "not" enabled by default when the AUTH TLS command is issued. title: Opportunistic TLS text: FTP uses the command "AUTH TLS" defined in RFC 4217 and LDAP defines a protocol extension OID in RFC 2830. HTTP uses upgrade header. TLS is application-neutral; in the words of RFC 5246: The style used to specify how to use TLS matches the same layer distinction that is also conveniently supported by several library implementations of TLS. E.g., the RFC 3207 SMTP extension illustrates with the following dialog how a client and server can start a secure session: The last "EHLO" command above is issued over a secure channel. Note that authentication is optional in SMTP, and the omitted title: File Transfer Protocol text: or replaced with SSH File Transfer Protocol (SFTP). The first FTP client applications were command-line programs developed before operating systems had graphical user interfaces, and are still shipped with most Windows, Unix, and Linux operating systems. Many FTP clients and automation utilities have since been developed for desktops, servers, mobile devices, and hardware, and FTP has been incorporated into productivity applications, such as HTML editors. The original specification for the File Transfer Protocol was written by Abhay Bhushan and published as on 16 April 1971. Until 1980, FTP ran on NCP, the predecessor of TCP/IP. The protocol was later replaced