Returns or specifies whether the Reflection integrated FTP client sends a PASV command to communicate with the server in passive mode (also called PASV mode).
Passive mode is required for connections through some firewalls. This option configures PASV mode connections to minimize connection problems with firewalls (for example, the Windows firewall that's enabled by default in some versions of Windows XP). It initiates a separate data connection for directory listings and file transfers. The default value is true.