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sudo apt-get install fail2ban
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sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
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ignoreip: ºöÂÔijЩIPµØµã£¬²»¾ÙÐмì²âºÍ×èÖ¹¡£ÀýÈ磺ignoreip = 127.0.0.1/8
bantime: ·â½ûʱ¼ä£¬µ¥Î»ÎªÃ롣ĬÒÔΪ600Ãë¡£ÀýÈ磺bantime = 3600
maxretry: ×î´óÖØÊÔ´ÎÊý¡£ÈôÊÇij¸öIPµØµãÔÚһ׼ʱ¼äÄÚÒ»Á¬Ê§°ÜµÄ´ÎÊýÁè¼ÝÕâ¸öÖµ£¬ÄÇô¸ÃIPµØµã½«±»·â½û¡£ÀýÈ磺maxretry = 5
destemail: µ±ÓÐIPµØµã±»·â½ûʱ£¬·¢ËÍÓʼþ֪ͨµÄÄ¿µÄÓÊÏäµØµã¡£ÀýÈ磺destemail = admin@example.com
action: ´¥·¢·â½û²Ù×÷µÄÐж¯¡£¿ÉÒÔÊÇ·¢ËÍÓʼþ֪ͨ(admin)¡¢Ìí¼Óµ½·À»ðǽ(RBLOCK)µÈ¡£ÀýÈ磺action = %(action_mwl)s
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[DEFAULT] ignoreip = 127.0.0.1/8 bantime = 3600 maxretry = 5 destemail = admin@example.com action = %(action_mwl)s [sshd] enabled = true port = ssh logpath = %(sshd_log)s
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sudo systemctl start fail2ban
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sudo systemctl enable fail2ban
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ssh username@your_server_ip
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sudo fail2ban-client status
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[Fail2ban¹Ù·½ÍøÕ¾](https://www.fail2ban.org/)
[Fail2ban GitHub¿ÍÕ»](https://github.com/fail2ban/fail2ban)
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