iptables -t filter -A INPUT -i eth0 -s 192.168.0.0/24 -j ACCEPT
iptables -t filter -A INPUT -o ppp0 -p esp -d 195.0.0.0/8 -j DROP
iptables -t filter -A INPUT -f -j LOG
iptables -t filter -A INPUT -p ah ! -f -j ACCEPT
iptables -t filter -A INPUT ! -p udp -j DROP
iptables -t filter -A INPUT ! -p tcp -j DROP
iptables -t filter -A INPUT ! -d 10.0.0.0/8 -j REJECT
iptables -t filter -A INPUT ! -s 172.16.0.0/12 -j DROP
iptables -t filter -A INPUT ! -i ppp0 -j ACCEPT
iptables -t filter -A INPUT ! -o ppp1 -j ACCEPT
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