'Declaration
 
Public Property PassiveTransfer As Boolean

'Usage
 
Dim instance As FtpConnection
Dim value As Boolean
 
instance.PassiveTransfer = value
 
value = instance.PassiveTransfer

public bool PassiveTransfer {get; set;}

Property Value

If set to true, the PASV command will be sent to the FTP server rather than the PORT command resulting in the FTP server "listening" on a data port (other than its default) and waiting for a data connection to be established by the client-side. If set to false, the PORT command will be sent and the client-side will be listening for an incoming data connection. The FTP server will establish the data connection upon receipt of a transfer command.

The reply to the PASV command includes the host and port address the FTP server is listening on.

If you are having issues connecting or sending and receiving files to and from a server, try setting the PassiveTransfer property to true.

.NET: net5.0, net5.0-windows, net6.0, net6.0-macos, net6.0-windows, net7.0, net7.0-macos, net7.0-windows, net8.0, net8.0-browser, net8.0-macos, net8.0-windows, net9.0, net9.0-browser, net9.0-macos, net9.0-windows, net10.0, net10.0-browser, net10.0-macos, net10.0-windows.

.NET Standard: netstandard2.0, netstandard2.1

.NET Framework: net20, net35, net40, net403, net45, net451, net452, net46, net461, net462, net463, net47, net471, net472, net48, net481.

Reference

FtpConnection Class
FtpConnection Members