自動封鎖暴力破解dovecot pop3 的腳本 - TShopping

Apr 17 05:48:41 dns dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user admin
Apr 17 05:48:44 dns dovecot-auth: pam_unix(dovecot:auth): check pass; user unknown
Apr 17 05:48:44 dns dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= rhost=::ffff:82.8.46.254
Apr 17 05:48:44 dns dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user admin
Apr 17 05:48:47 dns dovecot-auth: pam_unix(dovecot:auth): check pass; user unknown
Apr 17 05:48:47 dns dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= rhost=::ffff:82.8.46.254
Apr 17 05:48:47 dns dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user admin
Apr 17 05:48:49 dns dovecot-auth: pam_unix(dovecot:auth): check pass; user unknown
Apr 17 05:48:49 dns dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= rhost=::ffff:82.8.46.254
Apr 17 05:48:49 dns dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user admin
Apr 17 05:49:30 dns dovecot-auth: pam_unix(dovecot:auth): check pass; user unknown
Apr 17 05:49:30 dns dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= rhost=::ffff:82.8.46.254

複製代碼

#! /bin/bash
cat /var/log/secure|awk '/authentication failure/{print $(NF-1)}'|sort|uniq -c|sed 's/rhost=/ /g'|sed 's/::ffff://g'|awk '{print $2"="$1;}' > /root/blackdovecot.txt
cat blackdovecot.txt |egrep ^[0-9].[0-9]* > /root/blackdovecot1.txt
DEFINE="30"
for i in `cat /root/blackdovecot1.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 [ $? -gt 0 ];
then
echo "dovecot:$IP" >> /etc/hosts.deny
echo "vsftpd:$IP" >> /etc/hosts.deny
fi
fi
done

複製代碼