FTP Proxy package on 2.2 and FTP clients behind pfSense

[decibel83]

Hi,
I have a problem with the FTP Proxy package on pfSense 2.2.2.
I configured it on LAN and I saw that it created the NAT rules to route TCP connections to port 21 to the local FTP Proxy:

rdr-anchor "ftp-proxy/*" all
no rdr on em0 inet proto tcp from <unlimitedhosts> to any port = ftp
rdr pass on em0 inet proto tcp from any to any port = ftp -> 127.0.0.1 port 8021</unlimitedhosts>

The initial connection on port 21 works good, but the second connection to the random port does not work and so the client hangs after the LIST command. In the firewall logs on pfSense I see that the connection to the random port is blocked by the firewall.

I am connecting from clients on LAN to passive FTP servers on WAN.

Could you help me please?

Thank you very much!
Bye