I add a rule to the chain of PREROUTING for the nat table as follows: iptables -t nat -I PREROUTING -p udp --dport 4309 -j NFQUEUE --queue-num 0 However, when I run "iptables -L ", I can see nothing under PREROUTING chain ... Chain PREROUTING (0 references) target prot opt source destination ... Do miss something? Thanks -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html