crontab -e
编辑添加一下内容1 1 * * * sh /root/bin/Denyhosts.sh
脚本内容
#!/bin/bash#Denyhosts SHELL SCRIPT#2017-3-1cat /var/log/secure|awk '/Failed/{print $(NF-3)}'|sort|uniq -c|awk '{print $2"=" $1;}' >/root/bin/Denyhosts.txtDEFINE="10"for i in `cat /root/bin/Denyhosts.txt`do IP=`echo $i|awk -F= '{print $1}'` NUM=`echo $i|awk -F= '{print $2}'` if [ $NUM -gt $DEFINE ] then grep $IP /etc/hosts.deny >/dev/null if [ $? -gt 0 ]; then echo "sshd:$IP" >> /etc/hosts.deny fi fidone