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Fail2Ban

Fail2BanÊÇÒ»¸öÓÃÓÚ±ÜÃâ¶ñÒâµÇ¼ºÍDDoS¹¥»÷µÈµÄ¹¤¾ß¡£Ëüͨ¹ý¼à¿ØЧÀÍÆ÷µÄÈÕÖ¾Îļþ £¬¼ì²âµ½¶à´ÎµÇ¼ʧ°Ü»ò¶ñÒâÐÐΪºó £¬×Ô¶¯½«¹¥»÷ÕßµÄIPµØµã¼ÓÈë×èÖ¹»á¼ûÁбí £¬´Ó¶ø±£»¤Ð§ÀÍÆ÷µÄÇå¾²¡£

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sudo apt-get install fail2ban

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sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
sudo vi /etc/fail2ban/jail.local

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sudo service fail2ban restart

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sudo vi /etc/ssh/sshd_config

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PermitRootLogin no  #½ûÓÃrootÓû§µÇ¼
MaxAuthTries 3  #ÏÞÖƵǼʵÑé´ÎÊý

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sudo service sshd restart

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IPTables

IPTablesÊÇLinuxϵͳµÄĬÈÏ·À»ðǽ¹¤¾ß £¬¿ÉÒÔͨ¹ýÉèÖùæÔòÀ´ÏÞÖƶÔЧÀÍÆ÷µÄ»á¼û¡£Äã¿ÉÒÔʹÓÃIPTablesÀ´ÆÁÕÏÌض¨µÄIPµØµã¡¢¶Ë¿Ú»òЭÒé £¬Ìá¸ßЧÀÍÆ÷µÄÇå¾²ÐÔ¡£

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sudo iptables -A INPUT -s <IPµØµã> -j DROP

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sudo iptables -A INPUT -s 192.168.1.100 -j DROP

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sudo iptables -L

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Lynis

LynisÊÇÒ»¸ö¿ªÔ´µÄÇå¾²ÐÔÉó¼Æ¹¤¾ß £¬ÓÃÓÚ¼ì²éºÍÆÀ¹ÀLinuxϵͳÉϵÄÇ徲Σº¦¡£Ëü¿ÉÒÔɨÃèϵͳÖеÄÉèÖÃÎļþ¡¢Àú³Ì¡¢Óû§µÈ £¬²¢ÌṩÏìÓ¦µÄ½¨æźÍÐÞ¸´½¨Òé¡£ÒÔÏÂÊÇʹÓÃLynisµÄ¼òÆÓʾÀý£º

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sudo apt-get install lynis

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sudo lynis audit system

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