#!/bin/bash
#該腳本作用是檢測是否有惡意IP登陸服務器并郵件報警
#可以結合139郵箱以達到短信及時通知到手機的功能
#適用系統centos5
 
Ldate=`which date`
Lawk=`which awk`
Llast=`which last`
Lgrep=`which grep`
Lsendmail=`which sendmail`
Lifconfig=`which ifconfig`
serverip=`$Lifconfig eth0|$Lgrep inet|$Lawk -F : '{print $2}'|$Lawk '{print $1}'`
cutdate=`$Ldate |$Lawk '{print $1" "$2" "$3}'`
 
hackerip=`$Llast|$Lgrep "$cutdate"|$Lawk '{print $3}'|$Lgrep -v 192.168.1x.xx`
 
if [ -z $hackerip ]
then
exit
else
 
for logip in $hackerip
do
echo "hacker ip is  $logip already login  $serverip"|mail -s "SOS" rocdk890@139.com
 
done
fi