Iptables/Bridge/Passive FTP problem

["Gary W. Smith" <gary@xxxxxxxxxxxxxxx>]

Using this combination, how to I manage passive FTP on the firewall?
The machines sit inside the DMZ with bridging enabled giving each one of
them a public IP.  

My old firewall did SNAT/DNAT and for all of the Public IP's and it
worked fine there.  Not sure what we did differently besides bridging.