fail2ban 未检测到 CentOS 7 上的 ssh 故障

fail2ban 未检测到 CentOS 7 上的 ssh 故障

我已经在 CentOS 7 上安装了fail2ban并添加了jail.local:

[sshd]
enabled = true

当我尝试错误的 ssh 登录时,我会在 /var/log/secure 中收到如下日志条目:

Jun  5 11:09:40 arsenal sshd[32595]: Connection closed by 192.168.1.202 port 61745 [preauth]

但是,除非我将其设置为“调试”,否则fail2ban日志中不会出现任何内容:

2019-06-05 11:09:40,893 fail2ban.filtersystemd  [32110]: DEBUG   Read systemd journal entry: '2019-06-05T11:09:40.893324arsenal sshd[32595]: Connection closed by 192.168.1.202 port 61745 [preauth]'

即使我连续多次尝试这种错误的登录,它也不会阻止任何内容:

# fail2ban-client status sshd
Status for the jail: sshd
|- Filter
|  |- Currently failed: 0
|  |- Total failed: 0
|  `- Journal matches:  _SYSTEMD_UNIT=sshd.service + _COMM=sshd
`- Actions
   |- Currently banned: 0
   |- Total banned: 0
   `- Banned IP list:   

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