To disable modules within the Debian Sarge kernel:

Edit the aliases file:
/etc/modutils/alias #This is the old way of doing it (maybe woody only
or 2.4 kernel)
/etc/modprobe.d/aliases

Add aliases:
alias ip_nat_ftp off
alias ip_conntrack_ftp off

sudo update-modules

Now when I restart shorewall I get two informational error lines when
it tries to load the above modules.

-- 
Jeff Rasmussen
GPG public key 0x9686C12F