!/bin/bash

Block traffic from a specific country

COUNTRY = “cn”
IPTABLES = /sbin/iptables
EGREP = /bin/egrep

if [ “$(id -u)” != “0” ]; then
echo “you must be root” 1>&2
exit 1
fi

resetrules() {
$IPTABLES -F
$IPTABLES -t nat -F
$IPTABLES -t mangle -F
$IPTABLES -X
}

resetrules

for c in $COUNTRY
do
country_file = $c.zone

IPS = $($EGREP -v “^#|^$” $country_file)
for ip in $IPS
do
echo “blocking $ip”
$IPTABLES -A INPUT -s $ip -j DROP
done
done

exit 0