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A rule of thumb in determining if a reply fits into the 4xx or the 5xx (Permanent Negative) category is that replies are 4xx if the commands can be repeated without any change in command form or in properties of the User or Server (e.g., the command is spelled the same with the same arguments used; the user does not change his file access or ...
Below is a list of FTP commands that may be sent to a File Transfer Protocol (FTP) server. It includes all commands that are standardized by the Internet Engineering Task Force (IETF) in RFC 959, plus extensions. Note that most command-line FTP clients present their own non-standard set of commands to
500 Syntax error, command unrecognized (This may include errors such as command line too long) 500 5.5.6 Authentication Exchange line is too long [3]
The message consists only of the status line and optional header fields, and is terminated by an empty line. As the HTTP/1.0 standard did not define any 1xx status codes, servers must not [ note 1 ] send a 1xx response to an HTTP/1.0 compliant client except under experimental conditions.
One is that the FTP client and FTP server use the PASV command, which causes the data connection to be established from the FTP client to the server. [13] This is widely used by modern FTP clients. Another approach is for the NAT to alter the values of the PORT command, using an application-level gateway for this purpose.
Scriptable command line CrushClient with support for FTP(ES)/ SFTP/ HTTP(s) [16] CrushBalance load balancer included for a software based load balancer that can be put in front of the main CrushFTP server. Supports many back end protocols for file storage, including FTP(ES), SMB, SFTP, HTTP(s), WebDAV, Google Drive, Azure, Hadoop and S3 [17]
ProFTPD comes with a command-line interface (CLI) only, but there are several third-party Graphical user interfaces (GUI) existing for ProFTP for users who prefer this to the CLI, or like to use a combination of both. Especially when it comes for example to real-time monitoring of current user actions and file transmissions, a GUI can be very ...
The use of the File Transfer Protocol (FTP) for "network mail" on the ARPANET was proposed in RFC 469 in March 1973. [7] Through RFC 561, RFC 680, RFC 724, and finally RFC 733 in November 1977, a standardized framework for "electronic mail" using FTP mail servers on was developed. [8] [9] SMTP grew out of these standards developed during the 1970s.