iptables -N RH-Firewall-l-INPUT
/etc/init.d/iptables save
iptables -I INPUT -p tcp --dport 80 -j ACCEPT
iptables -I INPUT -p tcp --dport 443 -j ACCEPT
iptables -I INPUT -p udp --dport 123 -j ACCEPT
iptables -I INPUT -p tcp --dport 21 -j ACCEPT
iptables -I INPUT -p tcp --dport 22 -j ACCEPT
iptables -I INPUT -p udp --dport 53 -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited
/etc/init.d/iptables save
iptables -L -nv