You have a proxy server that performs important authorization to limit who can access what applications at a coarse grained level.
有一个代理服务器，它执行重要的授权，以很粗的粒度限制谁可以访问什么应用程序。
Proxy authentication and authorization: the middle-tier server performs authentication.
代理身份验证和授权：中间层服务器执行身份验证。
The request requires user authorization. The client must first authenticate itself with the proxy.
该请求需要用户验证。客户端首先必须通过代理进行自我验证。
This paper discusses the authorization problem and defines the conception of covered role, presents a proxy mechanism oriented role-based access control (PRBAC) model.
该文介绍了RBAC与代理机制相结合所带来的授权问题，在定义了角色屏蔽概念的基础上，提出了面向代理机制的角色访问控制模型。
This paper discusses the authorization problem and defines the conception of covered role, presents a proxy mechanism oriented role-based access control (PRBAC) model.
该文介绍了RBAC与代理机制相结合所带来的授权问题，在定义了角色屏蔽概念的基础上，提出了面向代理机制的角色访问控制模型。
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