To configure passive port, execute the following,
=-=-=-=-=-=-=-=-
Edit /etc/proftpd.conf or and add the following directive,
PassivePorts 30000 50000
-==-=-=-=-=-=-=-
Now, enable this port in iptable. if you are using CSF, you can easily open this port in "/etc/csf/csf.conf" in
TCP_IN -- edit 30000:50000.
Done
=-=-=-=-=-=-=-=-
Edit /etc/proftpd.conf or and add the following directive,
PassivePorts 30000 50000
-==-=-=-=-=-=-=-
Now, enable this port in iptable. if you are using CSF, you can easily open this port in "/etc/csf/csf.conf" in
TCP_IN -- edit 30000:50000.
Done