$iptables_base = "*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]

# disable all forwarding
-A FORWARD -j REJECT --reject-with icmp-host-prohibited

# trust loopback device
-A INPUT -i lo -j ACCEPT

# allow ICMP
-A INPUT -p icmp --icmp-type any -j ACCEPT

# allow IPSec
-A INPUT -p 50 -j ACCEPT
-A INPUT -p 51 -j ACCEPT

# allow mDNS
-A INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT

# allow CUPS browsing
-A INPUT -p udp -m udp --dport 631 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 631 -j ACCEPT

# allow packets for established connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
"

$iptables_final = "
-A INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
"

class iptables {
    file { "iptables" :
        path => "/etc/sysconfig/iptables",
        content => "$iptables_base$iptables_final"
    }

    service { "iptables" :
        enable => true
    }
}