Iptstate on Knoppix 6.4.4 - not working

[kl522]

root@Microknoppix:~# ll /proc/net/ip_conntrack 
-r--r----- 1 root root 0 Jul  4 05:05 /proc/net/ip_conntrack

Though this method works in Squeeze(Live CD) but I am still not able to make it work in Knoppix-6.4.4(DVD).

There are two possibilities. Either there is something wrong with the version of iptstate loaded, or still there is some other kernel modules not loaded ( load all the netlink and conntrack modules!) . As I don't exactly use Knoppix-6.4.4 and my kernel is custom compiled, I can't have first hand experience on knoppix 6.4.4.