Determine the following information needed to establish an FTP connection to your mainframe:
User ID.
Password.
Mainframe host name.
Control port number – listener port used by your mainframe FTP server, usually 21.
TCP/IP address space name.
Volume serial number or unit – specifies either a volume serial number (VOL=SER) and unit assignment for FTP to use, or allows FTP to use default values.
Log path name – indicates where FTP log information will be written.