Hi,
I know exactly what you mean. After you connect to the ftp server and the messages indicated you are being connected but it won't show the Directory listing.
In my Wan to Lan ftp rules, sources is * and Port is * and the Destination is Lan net and Port is 21
Or you can try the source port is 1024 - 65535 and the Destination port is 21
For outgoing Lan to Wan, I just set Destination port to *
Funny enough after i do a fresh install the whole box couple of times. The error messages of the static port went away and people can access our ftp server. I had such problems over one months since i created the topic but did not get any answer.
I tried the update snapshot method to see if it could fixed the problems. But it crashed my box beyond reboot.
I do not know if the follow could work, you can try to download the 1.2.3 RC 1 from the Germany Mirror site and restore all your configuration (If you do have the time to test). The problems might go away. It is not a scientific way, since I am not yet a subscriber member, this is how i solved the problems…. :'(
Good luck.