If you'd like to have a look at the chains your firewall consists of and the order in which the rules take effect: cat > /etc/rc.d/init.d/firewall.status << "EOF" #!/bin/sh # Begin $rc_base/init.d/firewall.status echo "iptables.mangling:" iptables -t mangle -v -L -n --line-numbers echo echo "iptables.nat:" iptables -t nat -v -L -n --line-numbers echo echo "iptables.filter:" iptables -v -L -n --line-numbers EOF