Does NuGenesis SDMS use passive-mode FTP connections for Managed Storage? - WKB63113

ENVIRONMENT

• NuGenesis 9 SDMS
• NuGenesis 8 SDMS

ANSWER

The answer depends on the control channel port number for the FTP site. If the Managed Storage location definition in SDMS specifies port 21, SDMS will use active-mode FTP when connecting to the FTP site; if the port number is other than 21, SDMS will use passive-mode FTP.

ADDITIONAL INFORMATION

• Active mode FTP: After successful login, the client sends a PORT command to the server with the port number on the client that the server should use for the data connection. The client must listen on that port (per the specification, the port can be anything in the range 1024-65535) and the FTP server must use the port number when sending data to the client. Because the FTP client is the one to set the parameters for the data connection, this mode is often called "client-managed" FTP.
• Passive mode FTP: After successful login, the client sends a PASV command to the FTP server and waits for a PORT command from the FTP server. The server opens a port in the range 1024-65535 and sends that port number to the client. The client must use that port number for the data connection. In this mode, the server sets the parameters for the data connection, so this mode is often called "server-managed" FTP.

See also: How to configure a data channel port range for an FTP site in Microsoft IIS