How to Enable passive mode in FTP server with CSF firewall

If you running a FTP server (Pureftp/Proftp) with a CSF firewall (very importantly in VPS or virtuozzo etc), it is very important to to enable passive mode,  because this mode, works best for ftp clients protected by firewall since the client initiates the connection. If you dont enable this mode in VPS you might encounter problems like ftp server will be unresponsive or hang. Continue reading “How to Enable passive mode in FTP server with CSF firewall”