he MODE Z command at the end of the Welcome
Message or look for MODE Z just before the SYST or first PWD command in the FTP log.
</dd>

<dt><b>Default settings for keeping connections alive</b></dt>
<dd>Choose a command which is sent to keep the connection alive (when the connection is not
used to communicate with the server nor to send any data). NOOP and PWD commands
are not transferring any data. If your FTP server closes connections due to no data transfer,
use NLST or LIST commands. We recommend to use