mirror of
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21 lines
533 B
Bash
Executable File
21 lines
533 B
Bash
Executable File
#! /bin/bash
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#禁止弱口令登录改良版
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cat /var/log/secure|awk '/Failed/{print $(NF-3)}'|sort|uniq -c|awk '{print $2"="$1;}' > black.txt #尝试登录的次数和ip
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DEFINE="5" #单个ip尝试登录最大值
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for i in `cat /root/black.txt`
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do
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IP=`echo $i |awk -F= '{print $1}'`
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NUM=`echo $i|awk -F= '{print $2}'`
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if [ $NUM -gt $DEFINE ]; then
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grep $IP /etc/hosts.deny > /dev/null
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if [ $? -gt 0 ]; then
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echo "sshd:$IP" >> /etc/hosts.deny #扔到hosts文件中
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fi
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fi
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done |