This session is known as the active connection mode. In return, the server will grant that access.
To get or transfer a file, an authorized user will use the protocol to request on creating changes in the server. The other one is called a data channel, where the distribution of data happens. The first one is called the command channel where it initiates the instruction and response. There are two distinct communication channels while establishing an FTP connection. The practice is common in a so-called anonymous FTP. Some public FTP servers may not require credentials to access their files. To do that, users need to have permission by providing credentials to the FTP server. FTP connection needs two parties to establish and communicate on the network.