插件介紹
MySQL 5.7.17 以后提供了Connection-Control插件用來控制客戶端在登錄操作連續(xù)失敗一定次數(shù)后的響應(yīng)的延遲。該插件可有效的防止客戶端暴力登錄的風(fēng)險(攻擊)。該插件包含以下2個組件
- CONNECTION_CONTROL:用來控制登錄失敗的次數(shù)及延遲響應(yīng)時間
- CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS:該表將登錄失敗的操作記錄至IS庫中
插件安裝
-- 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
-- 插件動態(tài)安裝啟用
mysql> INSTALL PLUGIN CONNECTION_CONTROL SONAME 'connection_control.so';
mysql> INSTALL PLUGIN CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS SONAME 'connection_control.so';
-- 驗證是否正常安裝
mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS
FROM INFORMATION_SCHEMA.PLUGINS
WHERE PLUGIN_NAME LIKE 'connection%';
mysql> SHOW PLUGINS;
插件配置
-- 查看默認(rèn)相關(guān)變量
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
- 失敗嘗試的次數(shù),默認(rèn)為3,表示當(dāng)連接失敗3次后啟用連接控制,0表示不開啟
- connection_control_max_connection_delay
- 響應(yīng)延遲的最大時間,默認(rèn)約25天
- connection_control_min_connection_delay
- 響應(yīng)延遲的最小時間,默認(rèn)1000微秒,1秒
-- 該表記錄登錄失敗的用戶及失敗次數(shù),當(dāng)用戶登錄成功后,登錄失敗的記錄則會被刪除。
-- 重新配置connection_control_failed_connections_threshold變量,該表記錄會被刪除(重置)
-- 如果使用不存在的用戶登錄,則該表記錄用戶名為空,但會記錄具體登錄的IP
use information_schema;
select * from connection_control_failed_login_attempts;
-- 連接控制的使用次數(shù)(可用戶判斷是否存在暴力登錄嘗試)
-- 重新配置connection_control_failed_connections_threshold變量,該表記錄會被刪除(重置)
mysql> show global status like 'Connection_control_delay_generated';
+------------------------------------+-------+
| Variable_name | Value |
+------------------------------------+-------+
| Connection_control_delay_generated | 5 |
+------------------------------------+-------+
本文摘自 :https://www.cnblogs.com/