To enable FTP on Plesk you will need to login to the server using a shell and do the following:-
First check whether ftp is running in the server using “ps” and then check the status using
>>chkconfig ftp_psa status
Now to turn on FTP
>>chkconfig ftp_psa on
and similarly if you want to turn OFF FTP
>>chkconfig ftp_psa off
The FTP files for plesk is present with the xinetd service . So make sure xinted is also up before you start FTP
chkconfig xinted status
chkconfig xinetd { start , stop }
