If what you want is for conntrack to be able to track ftp data ports, but where the control channel is not on tcp/21, the modules support arguments upon loading.
Specify all the ports as Additional Module Parameters..
#ifdef MODULE_PARM MODULE_PARM(ports, "1-" __MODULE_STRING(MAX_PORTS) "i"); #endif
At this moment, MAX_PORTS = 8, I guess.
This will ensure that ur connection tracking and NAT modules will be called for all those ports
-- Ashutosh Naik Teneoris Networks India Pvt. Ltd.
