Hi all, I am working with linux firewall implementation I am using iptables version v1.2.11 and linux kernal 2.4.27. If multiport option comes with iptables(iptable rules are below), the services are not working. But individual services are working properly. The following filtering rules are not giving any syntatical errors. I checked logs no info.. #/sbin/iptables -A FORWARD -i eth0 -o eth1 -p tcp -s 192.168.2.0/24 -m multiport --dport 24,80 -m multiport --sport 0:65535 -d 192.168.1.2 -j ACCEPT #/sbin/iptables -A FORWARD -i eth1 -o eth0 -p tcp -s 192.168.1.2 -m multiport --sport 24,80 -d 192.168.2.0/24 -m multiport --dport 0:65535 -j ACCEPT Please give any solution or hints for the below problem. Thanks Bruce