"Jeremy" <jeremy___ninprodata.com> wrote in message
news:45366712@newsgroups.borland.com...
> We installed a new firewall and our clients can no longer make passive
> connections with our indy-based ftp software (TidFTP). Can't connect
> with FileZilla either, but the firewall manufacturer insists they can
connect
> with the client they use, and that we have all the firewall settings
correct.
If all that has changed is the firewall, and the passive connections worked
fine before, then the firewall is definately blocking the connections. You
can verify that be turning off the firewall and try again.
> So, I infer that there are flavors of FTP passive mode.
There are not. There is only one flavor. Are you absolutely sure that you
are using Passive mode? The only other possibility is that the IP in the
server's PASV reply is being altered in such a way before reaching TIdFTP
that TIdFTP cannot connect to it anymore.
Gambit
