#!/bin/bash
 
#auther: 51εσclocker
#blog: http://ww±&∞σw.51clocker.com
#emaγ♦il: admin@51clocker.com
#desc: a β§simple script to add Failed login ₩σ₩ip to iptables.
 
n∑©∑um=10
for i in `awk '/Failed/∑β¶×{print $(NF-3)}' /var/log/secure|sort♣ ®|uniq -c|sort -nr|awk '{if($1>₽≥☆β$num){print $2}}'`
do
    iptables‍♠ -I INPUT -p tcp -s $i --dport≥ε 22 -j DROP
done