LARTC - Jul 2005 - 2 load-balanced adsl cons and ftp-server w/out site-to-site transfer

Hello,
how it''s possible to download something from ftp servers without 
site-to-site transfer enabled?

If the data transfer connection will be routed through another outgoing 
interface than the command connection the server denies the connection.

Are there any solutions for instance with ip_conntrack_ftp module or 
similar?

-- 
Markus Schulz