pure-ftpd--ipf--jail--TLS

[Hiren]

greetings.

i have setup a pure-ftpd server in a jail allowing only TLS connections.
i am using clients like coreftpd lite, i notice that i can successfully
log into the server yet basic commands like list refuse to work.
i also noticed that everything worked great as soon as i used the server
without TLS encryption. i was wondering what the problem could be
related to.
i am currently using ipf allowing port 21 through
i am also NATing port 21 to my jails ip.
i would appreciate some information

thanks
Hiren.