File Transfer Protocol - Wikipedia
Companies and other Internet users often provide files and general-interest materials to be downloaded from an FTP server. To access this FTP server, users . Contact your relationship manager to enable any of these FTP options for your account. Marketing Cloud recommends that you use a third-party FTP utility to access the FTP. (Many applications offer these formats as "save as" options.). Many sites do grant FTP access to 3rd parties that they work with or your business relationship end; you'll only need to change the username.
As a consequence, this mode is inappropriate for files that contain data other than plain text. Image mode commonly called Binary mode: The sending machine sends each file byte by byte, and the recipient stores the bytestream as it receives it. Image mode support has been recommended for all implementations of FTP. Allows two computers with identical setups to send data in a proprietary format without the need to convert it to ASCII.
For text files, different format control and record structure options are provided. These features were designed to facilitate files containing Telnet or ASA. Data transfer can be done in any of three modes: Data is sent as a continuous stream, relieving FTP from doing any processing.
Rather, all processing is left up to TCP. No End-of-file indicator is needed, unless the data is divided into records. FTP breaks the data into several blocks block header, byte count, and data field and then passes it on to TCP.
Data is compressed using a simple algorithm usually run-length encoding. This mode was described in an Internet Draftbut not standardized. Although users are commonly asked to send their email address instead of a password,  no verification is actually performed on the supplied data. This is problematic for both NATs and firewalls, which do not allow connections from the Internet towards internal hosts. There are two approaches to solve this problem.
- Explanation of the FTP and SFTP protocols
- File Transfer Protocol
FTP has a stateful control connection which maintains a current working directory and other flags, and each transfer requires a secondary connection through which the data are transferred. In "passive" mode this secondary connection is from client to server, whereas in the default "active" mode this connection is from server to client. This apparent role reversal when in active mode, and random port numbers for all transfers, is why firewalls and NAT gateways have such a hard time with FTP.
The Secure File Transfer Protocol ensures that data is securely transferred using a private and safe data stream. It is the standard data transmission protocol for use with the SSH2 protocol.
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The SFTP protocol runs on a secure channel - no clear text passwords or file data are transferred. Risks when using the FTP protocol Using the FTP protocol is regarded to be very unsafe because a password must always be entered for the transfer. The password is subsequently transmitted over the Internet without encryption. Despite the fact that FTP is one of the oldest and most widely used Internet protocols, there are security risks when using it.
FTP Access to Your Websites
A user's name and password are transferred in clear text when logging on and can therefore be easily recognized. When using an FTP connection, the transferred data could "stray" to a remote computer and not arrive at their intended destination. Third parties can then download data from the remote system to their own computers, or existing data can be viewed and edited. This presents a significant risk, particularly when transferring company confidential information.
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FTP can also be used to determine the passwords of individual users, since the password is transferred in clear text when logging on. As a result, even those with unauthorized access to this network can record the password information. It is therefore advisable to use SFTP connections to ensure that data is securely transferred.
This data transfer protocol encrypts the connection between your computer and the FTP server. Data is then transferred to your computer over an encrypted connection SSH-Tunnel.