*filter

# default policy is DROP
-P INPUT DROP
-P OUTPUT DROP
-P FORWARD DROP

# allow bootpc and bootps
-A OUTPUT -p udp --sport bootpc --dport bootps -j ACCEPT
-A INPUT  -p udp --sport bootps --dport bootps -j ACCEPT

# allow broadcasts from eth1
-A INPUT -i eth1 -d 10.1.255.255 -j ACCEPT

# allow esp
-A INPUT  -i eth0 -p 50 -j ACCEPT
-A OUTPUT -o eth0 -p 50 -j ACCEPT

# allow IKE
-A INPUT  -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
-A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT

# allow MobIKE
-A INPUT  -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
-A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT

# allow ssh
-A INPUT  -p tcp --dport 22 -j ACCEPT
-A OUTPUT -p tcp --sport 22 -j ACCEPT

# allow crl fetch from winnetou
-A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT

# log dropped packets
-A INPUT  -j LOG --log-prefix " IN: "
-A OUTPUT -j LOG --log-prefix " OUT: "

COMMIT