Passive FTP

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Passive ports are used to allow multiple FTP connctions   by moving open FTP connections from port 21 to a port specified in the passive port range (40,000-40,100 standard UKFast passive port range 

Common

Passive

~~Check~~FTP ~~in /etc/proftpd.d/passive ports folder~~ 

  Error:

Can connect but can't retrieve directory listing: 

80,244,185,220,156,149 

First 4 numbers are the server IP,  

Multiply 5th number by 256 = x 

X+6th number = passive port which is being used 

156x256=39936+149=40085 

~~Test~~====================================================================================
Checking/Changing Passive Ports:

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none-panelled:

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cPanel:

cPanel will use either ProFTP or PureFTP:

PureFTP:

/var/cpanel/conf/pureftpd/local

Once updated, the FTP service needs to be restarted with the following command:

/usr/local/cpanel/scripts/setupftpserver pure-ftpd --force

ProFTP:

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Plesk:

Check in /etc/proftpd.d/passive ports ~~on client server~~folder 