Passive Mode (-PV or -PASV)

The Passive Mode adapter command (-PV or -PASV) specifies that you only try passive mode for the FTP data connection. Passive mode is primarily useful for firewalls and is a preferred connection method for security reasons.

By default, the adapter attempts to connect using passive mode. If unsuccessful, the adapter uses Port Mode. See the Port Mode adapter command (-PT). During a passive mode connection, the server listens for the connection and dictates where the adapter is to connect. Older servers might not support passive mode.