因此，在大多数情况下，基础设施默认地为管理通信流提供合理的身份验证、授权和加密。

Thus, for the most part, the infrastructure provides for reasonable authentication, authorization, and encryption of administrative traffic by default.

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基于角色的访问建立在适当授权的基础上，可以作为中央管理基础设施的一部分被实现。

Role-based access on a need-to-use basis can be implemented as part of the central management infrastructure.

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这会限制得到授权的管理员对基础设施的访问。

This limits authorized administrator access to the infrastructure.

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