MySQL安装控制插件(Connection-Control)--可有效的防止客户端暴力登录的风险(攻击)

插件介绍

MySQL 5.7.17 以后提供了Connection-Control插件用来控制客户端在登录操作连续失败一定次数后的响应的延迟。该插件可有效的防止客户端暴力登录的风险(攻击)。该插件包含以下2个组件

• CONNECTION_CONTROL：用来控制登录失败的次数及延迟响应时间
• CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS：该表将登录失败的操作记录至IS库中

插件安装

-- 配置文件增加以下配置 [mysqld] plugin-load-add = connection_control.so connection-control = FORCE connection-control-failed-login-attempts = FORCE connection_control_min_connection_delay = 1000 connection_control_max_connection_delay = 86400 connection_control_failed_connections_threshold = 3 -- 插件动态安装启用 mysql> INSTALL PLUGIN CONNECTION_CONTROL SONAME 'connection_control.so'; mysql> INSTALL PLUGIN CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS SONAME 'connection_control.so'; -- 验证是否正常安装 mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME LIKE 'connection%'; mysql> SHOW PLUGINS; 

插件配置

-- 查看默认相关变量 mysql> show variables like 'connection_control%'; +-------------------------------------------------+------------+ | Variable_name | Value | +-------------------------------------------------+------------+ | connection_control_failed_connections_threshold | 3 | | connection_control_max_connection_delay | 2147483647 | | connection_control_min_connection_delay | 1000 | +-------------------------------------------------+------------+ -- 定制化配置 mysql> SET GLOBAL connection_control_failed_connections_threshold = 3; mysql> SET GLOBAL connection_control_min_connection_delay = 1000; mysql> SET GLOBAL connection_control_max_connection_delay = 86400; -- 查看修改后的配置 mysql> show variables like 'connection_control%'; +-------------------------------------------------+-------+ | Variable_name | Value | +-------------------------------------------------+-------+ | connection_control_failed_connections_threshold | 3 | | connection_control_max_connection_delay | 86400 | | connection_control_min_connection_delay | 1000 | +-------------------------------------------------+-------+ 

• connection_control_failed_connections_threshold
  • 失败尝试的次数，默认为3，表示当连接失败3次后启用连接控制，0表示不开启
• connection_control_max_connection_delay
  • 响应延迟的最大时间，默认约25天
• connection_control_min_connection_delay
  • 响应延迟的最小时间，默认1000微秒，1秒

-- 该表记录登录失败的用户及失败次数，当用户登录成功后，登录失败的记录则会被删除。 -- 重新配置connection_control_failed_connections_threshold变量，该表记录会被删除(重置) -- 如果使用不存在的用户登录，则该表记录用户名为空，但会记录具体登录的IP use information_schema; select * from connection_control_failed_login_attempts; -- 连接控制的使用次数(可用户判断是否存在暴力登录尝试) -- 重新配置connection_control_failed_connections_threshold变量，该表记录会被删除(重置) mysql> show global status like 'Connection_control_delay_generated'; +------------------------------------+-------+ | Variable_name | Value | +------------------------------------+-------+ | Connection_control_delay_generated | 5 | +------------------------------------+-------+