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1. #!/bin/bash

2. #Denyhosts SHELL SCRIPT

3. #2013-6-24

4. cat /var/log/secure|awk '/Failed/{print $(NF-3)}'|sort|uniq -c|awk '{print $2"=" $1;}' >/usr/local/bin/Denyhosts.txt

5. DEFINE="10"

6. for i in `cat /usr/local/bin/Denyhosts.txt`

7. do

8. IP=`echo $i|awk -F= '{print $1}'`

9. NUM=`echo $i|awk -F= '{print $2}'`

10. if [ $NUM -gt $DEFINE ]

11. then

12. grep $IP /etc/hosts.deny >/dev/null

13. if [ $? -gt 0 ];

14. then

15. echo "sshd:$IP" >> /etc/hosts.deny

16. fi

17. fi

18. done

1. 添加到定時(shí)任務(wù)

2. crontab -e

3. 添加定時(shí)任務(wù)

4. */2 * * * * /usr/local/bin/denyhosts.sh

1. 執(zhí)行啟動(dòng)

2. /sbin/service crond start