我刚刚配置了一个新服务器并安装了fail2ban，但是当我不断尝试使用错误的密码连接时，它并没有禁止我
fail2ban.log：
2018-03-23 12:46:29,363 fail2ban.actions [9756]: NOTICE [sshd] [my ip] already banned
2018-03-23 12:46:30,747 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:46:33,346 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:46:35,515 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:46:36,372 fail2ban.actions [9756]: NOTICE [sshd] [my ip] already banned
2018-03-23 12:47:45,471 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:47:46,820 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:47:49,503 fail2ban.filter [9756]: INFO [sshd] Found [my ip]
2018-03-23 12:47:50,458 fail2ban.actions [9756]: …