#!/bin/bash

wget -O /tmp/amazonaws.json https://ip-ranges.amazonaws.com/ip-ranges.json

grep "ip_prefix" /tmp/amazonaws.json | sort -V | \
    cut -f 2 -d ":" | cut -f 2 -d '"' > /tmp/amazonaws-ipv4.txt

for i in `cat /tmp/amazonaws-ipv4.txt `
    do echo "-A INPUT -p tcp -s $i -j DROP"
done > /tmp/amazonaws-ipv4-DROP.txt

cat /tmp/amazonaws-ipv4-DROP.txt