I used the free version of ZA for a week without any problems behind a
DSL modem. Configured both local and internet zone to high security.
Then I upgraded to ZA Pro, and am generally happy with it. Except, I can
no longer perform FTP transfers. Both browsers and commandline ftp
encounter the same problem: Can log into the site, but when the server
opens the data connection ZA Pro refuses the incoming packet.
Since the incoming connection opens a dynamically assigned port, there's
no way of opening the port.
I have all applications set to either ask to be a server, or even allow
certain ones to be a server. But I never get a prompt. I assume that
some service/program on my side negotiated the dynamic port and should
be listening on it?
I searched the ZA FAQs and played with different settings for several
hours, but couldn't get it to work. Interestingly enough I didn't have
this problem with the free version of ZA which was to my knowledge
configured similary (except for all the additional stuff).