网络管理存在的安全问题包括加密验证、身份认证和访问控制等。

The security problem of network management includes encryption, authentication and access control.

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Spring Security是功能强大的并高度可定制的认证和访问控制框架。

Spring Security is a powerful and highly customizable authentication and access-control framework.

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在P 2 P网络中应用门限DSA算法，提出一种适应网络动态性强等特点的节点认证和访问控制方案。

This paper proposes a authentication and access control scheme which USES modified threshold DSA algorithm in P2P network.

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