I'm new in iptables so I need a little help. I have the machine with next network card configuration: eth0 - internal network, 10.x.x.x eth1 - wan, static IP address I executed the next iptable commands: iptables -F iptables -A INPUT -i eth1 -j REJECT Everything is fine: the machine can not be "ping" by its static ip address over Internet and is fully reachable from the internal net. but when I do ping from the machine: ping [some address on the internet] the address can not be reached. but iptables -F ping [some address on the internet] the address can be reached. What did I do wrong?