*filter :INPUT DROP :FORWARD ACCEPT :OUTPUT ACCEPT -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p icmp --icmp-type ping -j ACCEPT -A INPUT -p tcp --dport 22 -j ACCEPT -A INPUT -p tcp --dport 5665 -j ACCEPT -A INPUT -p tcp --dport 9001 -j ACCEPT -A INPUT -p tcp -m multiport --dports 5269,5222 -j ACCEPT -A INPUT -p udp --dport 1194 -j ACCEPT -A INPUT -p udp --dport 53 -s 10.8.0.1/24 -j ACCEPT -A INPUT -p tcp --dport 53 -s 10.8.0.1/24 -j ACCEPT -A INPUT -p udp --dport 53 -s 10.66.66.0/24 -j ACCEPT -A INPUT -p tcp --dport 53 -s 10.66.66.0/24 -j ACCEPT -A INPUT -p udp --dport 53 -s 100.64.0.0/10 -j ACCEPT -A INPUT -p tcp --dport 53 -s 100.64.0.0/10 -j ACCEPT -A INPUT -p udp --dport 51802 -j ACCEPT COMMIT *nat :PREROUTING ACCEPT :INPUT ACCEPT :OUTPUT ACCEPT :POSTROUTING ACCEPT -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.66.66.0/24 -o eth0 -j MASQUERADE COMMIT