iptables \ -A FJ-vnet0 \ -p icmp \ -m connlimit \ --connlimit-above 1 \ -j DROP iptables \ -A HJ-vnet0 \ -p icmp \ -m connlimit \ --connlimit-above 1 \ -j DROP iptables \ -A FJ-vnet0 \ -p tcp \ -m connlimit \ --connlimit-above 2 \ -j DROP iptables \ -A HJ-vnet0 \ -p tcp \ -m connlimit \ --connlimit-above 2 \ -j DROP iptables \ -A FJ-vnet0 \ -p all \ -m state \ --state NEW,ESTABLISHED \ -j RETURN iptables \ -A FP-vnet0 \ -p all \ -m state \ --state ESTABLISHED \ -j ACCEPT iptables \ -A HJ-vnet0 \ -p all \ -m state \ --state NEW,ESTABLISHED \ -j RETURN