![]() The latter is a riskier option - someone could mess with your files, upload illegal content, or simply fill up your storage space. Some FTP servers require a user account with a username and a password, while others can be used anonymously. Overall, the choice between active and passive mode FTP depends on the network configuration and the firewall rules in place, and either mode can be used to transfer files between computers. Active and passive FTP modes ( Source: Cloudzy) Passive mode FTP avoids connectivity issues caused by client-side firewalls, allowing the client to initiate the data connection. In passive mode, the server “tells” the client which server-side port they should connect to, and the client initiates the connection.īy default, most FTP clients use active mode FTP, but they also often have the option to use passive mode FTP. In active mode, the client lets the server know which destination port should be used for the data connection. You may have also heard the term “active FTP mode.” In FTP, the terms “active” and “passive” refer to the mode in which data connections are established between the FTP client and the server. The client then can issue further FTP commands or disconnect from the server. When the file transfer is complete, the data connection is closed. ![]() The data connection transfers the actual file contents between the client and the server. For file transfers, the client opens a separate data connection to the server.The client can then issue FTP commands, such as upload, download, delete, or list files, to the server. ![]() Sometimes, anonymous access is also possible. If the authentication is successful, the server grants access to the client.
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