为了提高财务系统的安全，通过采用JAVA 客户端、应用程序服务器、数据库服务器三层结构，并采用加密传 输和证书认证，提高应用层面安全性。在服务器前安装防火墙，并设置安全访问策略，增设数据库备份主机，提高数据库的安 全性。

In order to improve the safety of the financial system, three layer structures with Java client, application server, database server are designed. And the encryption and certification are used to improve the application level security. Firewall is installed in front of the server, the security access policy is set up, and the database backup host is added to improve the database security.