*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]

# ICMP packets
-A INPUT -p icmp --icmp-type 0 -j ACCEPT
-A INPUT -p icmp --icmp-type 3 -j ACCEPT
-A INPUT -p icmp --icmp-type 11 -j ACCEPT

# Only one ping per second
-A INPUT -p icmp --icmp-type 8 -m limit --limit 1/second -j ACCEPT

# http
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth0 -j ACCEPT

COMMIT