/sbin/iptables -F
/sbin/iptables -t nat -F
/sbin/iptables -t mangle -F
/sbin/iptables -X

/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A INPUT -m state --state NEW -i ! eth1 -j ACCEPT
# only if both of the above rules succeed, use
/sbin/iptables -P INPUT DROP

/sbin/iptables -A FORWARD -i eth1 -o eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT

/sbin/iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE

/sbin/iptables -A FORWARD -i eth1 -o eth1 -j REJECT

/sbin/iptables -A INPUT -i eth1  -p tcp --dport 80 -j ACCEPT
/sbin/iptables -A INPUT -i eth1  -p tcp --dport 22 -j ACCEPT