While FTP can be used to accomplish several kinds of tasks, there are three primary categories of FTPs.
FTP Plain : FTP Plain refers to normal FTP without encryption. By default, it uses port 21, and it is supported by the majority of web browsers.
FTPS : FTPS refers to FTP Secure or FTP secure sockets layer (SSL) because this kind of FTP server uses SSL encryption, which is slightly different than traditional FTP. The primary difference is the security that comes with FTPS, which was the first type of encrypted FTP invented.
FTPES : The “E” in FTPES means “explicit,” making the acronym stand for File Transfer Protocol over explicit transport layer security (TLS)/SSL. This type of FTP begins like regular FTP, using port 21, but then special commands upgrade it to a TLS/SSL-encrypted transmission. Because it tends to work well with firewalls, some prefer to use FTPES over FTPS.
How to Use FTP
The three most common ways of using FTP include:
Via a web browser: With a web browser, you do not need any special software or a client to download files from servers that provide for FTP sites.
A General User Interface (GUI) FTP client: These third-party applications enable users to connect and then send files over FTP.
Command-line FTP : Major operating systems come equipped with FTP client capabilities as a command line.
