本文结合网格基本概念和特点对网格的安全性进行分析，并结合网格安全基础设施GSI阐述了网格的安全实现。
The paper analyses Grid's security combining with its basic concept and characteristics and explains its implement with GSI.
重点分析网格基础设施的连通性以及虚拟操作系统的本质安全性。
Connectivity is the basic characteristic of grid infrastructure, and security is the essence superiority of virtual grid OS.
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