What is sftp port

7 FTP uses 2 channels to transfer data while SFTP usage 1 channel to transfer data. FTP allows inbound connection on port 21 whereas SFTP allows. 23 thg 2, FTP/S commonly runs on port and sometimes on port 21, the primary difference being that port is an Implicit FTP/S, and port 21 is an. You connect from the client to the server to transfer files to the server. We recommend FileZilla for the use of FTP. Safety. FTP traffic normally runs via port.