#!/bin/bash
 
#auther: 51clocker
#blog: ®βhttp://www.51clocker.com
#email: admin@51cloc​λ"ker.com
#desc: a simple script to add Fai₩€×↔led login ip to iptables.
 
num=10
for i​↑♥£ in `awk '/Failed/{print $(NF-3)}' /var/lo>✔♠↓g/secure|sort|uniq -c|sort -nr|awk '{if($1&✔≠​;gt;$num){print $2}}'`
do
≥↑>↓    iptables -I INPUT ₽©Ω-p tcp -s $i --dport 22 -j DROP
done