一位科学家曾经说过：“我已经得出结论，来自外太空的智能控制飞行器正在访问地球。”
A scientist once said: "I have concluded that the earth is being visited by intelligently controlled vehicles from outer space."
中央工具在单一位置存储整个网络的用户标识和访问控制信息，并提供用于进行全面管理的界面。
Central tools store user identity and access control information for the entire network in a single location and provide screens to manage it all.
基于保护位的自主型访问控制，很难实现基于单个用户制定全局安全策略。
Finally, discrete access control based on protection bits can't provide global secure policy based on individual user.
应用推荐