GreenSQL 是一个数据库防火墙程序，用来防止 SQL 注入攻击。GreenSQL 使用的是代理的模式来支持 MySQL 数据库，结构图如下所示：


项目主页： http://www.greensql.net/
文档地址： http://www.greensql.net/community/docs
下载地址： http://www.greensql.net/download

GreenSQL is an Open Source database firewall used to protect databases from SQL injection attacks. GreenSQL works as a proxy and has built in support for MySQL. The logic is based on evaluation of SQL commands using a risk scoring matrix as well as blocking known db administrative commands (DROP, CREATE, etc). GreenSQL is distributed under the GPL license.

用法：http://webservices.ctocio.com.cn/wsare/247/8700747.shtml