MySQL插件之Connection-Control
目录
目录
等保需求
- 登录失败策略:登录失败5次锁定10分钟,使用 Connection-Control 插件实现。
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_PLUS_PERMANENT // 防止运行时卸载
connection-control-failed-login-attempts = FORCE_PLUS_PERMANENT // 防止运行时卸载
connection_control_min_connection_delay = 600000
connection_control_max_connection_delay = 2147483647
connection_control_failed_connections_threshold = 5
-- 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 = 5;
mysql> SET GLOBAL connection_control_min_connection_delay = 600000;
-- 查看修改后的配置
mysql> show variables like 'connection_control%';
+-------------------------------------------------+------------+
| Variable_name | Value |
+-------------------------------------------------+------------+
| connection_control_failed_connections_threshold | 5 |
| connection_control_max_connection_delay | 2147483647 |
| connection_control_min_connection_delay | 600000 |
+-------------------------------------------------+------------+
- 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1秒(1000ms)
-- 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
mysql> use information_schema;
mysql> 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 |
+------------------------------------+-------+