
Using passive mode
"Passive mode" means that the computer running Transmit will make network connections to the FTP server. Conversely, in non-passive mode, the FTP server will make network connections to the computer running Transmit.
If the computer running Transmit is behind a network firewall, or NAT router (such as a typically-configured Airport Base Station), passive mode will usually be required.
Passive mode is enabled by default, and need not be turned off unless you are having problems connecting to, or transferring files on an FTP server.
To turn passive mode on or off, choose Transmit > Preferences.
Click the Network button.
Check or uncheck the box labeled "Use passive (PASV) mode for data transfers."
It is also possible to configure whether Transmit uses passive mode on a per-favorite basis. Refer to Editing a favorite for more information.
Passive mode is used only in FTP connections. It is not relevant to other protocols, such as SFTP or WebDAV.