Geo Blocker

geo_block.sh

#!/bin/bash

if [ $# -eq 0 ]
  then
    echo "No arguments supplied. Example: sudo bash geo_block.sh cn af"
    exit 1
fi

IPT=/sbin/iptables
IPDENY="http://www.ipdeny.com/ipblocks/data/countries"
CURL=/usr/bin/curl
CHAIN=COUNTRY

# Drop chain
iptables -D INPUT -j $CHAIN
iptables --flush $CHAIN
iptables -X $CHAIN

# Create chain
iptables -N $CHAIN
iptables -A INPUT -j $CHAIN

for c in "$@"
do
	echo "Blocking $c!"
	BADIPS=$($CURL -sS $IPDENY/$c.zone | egrep -v "^#|^$")
	for ipblock in $BADIPS
	do
		$IPT -A $CHAIN -s $ipblock -j DROP
	done
done