Hello all I read man conntrack document guide. That is great. I have a issue while i am working on it. For example i just want add new rule like this: conntrack -I -p udp -s 192.168.122.242 -d 192.168.122.103 --sport 5070 --dport 5005 -r 192.168.122.1 -q 192.168.122.103 --reply-port-src 1111 --reply-port-dst 2222 --timeout 30 But it doen't work. if i insert these two rule in iptable, the same above rule will insert in conntrack table automatically and work correctly. iptables -t nat -A PREROUTING -i eth0 -p udp -s 192.168.122.242 --dport 5005 -j DNAT --to 192.168.122.1:1111 iptables -t nat -A POSTROUTING -p udp --dport 1111 -j SNAT --to 192.168.122.103:2222 Who can i solve this problem? With Best regards.Mojtaba -- --Mojtaba Esfandiari.S
