This thesis focuses on security problems of group communication, and intends to construct a policy-based security management infrastructure for group communication.

本文主要研究组通信的安全管理问题，目标是建立一个基于策略的组通信安全管理基础结构。

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This infrastructure can also act as a point of control to apply service management, security, monitoring, and instrumentation to the Service-Oriented Architecture.

这个基础设施同样也可以作为控制点，将服务管理、安全、监视和规范应用于面向服务的体系结构。

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At the core of all SOA security is a policy-based infrastructure and management of the policies.

所有SOA安全的核心都是基于策略的基础设施和策略的管理。

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The groups established six panels to handle water and sanitation, health and nutrition, distribution of relief items, logistics and infrastructure, camp management, and protection and security.

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Directories are a key piece of infrastructure for supporting user management, establishing rules and policies for net resource use, and managing security certificates.

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