usb主机控制器遵循两个标准之一：UHCI(通用主机控制器接口)或OHCI(开放式主机控制器接口)。

USB host controllers follow one of two standards: UHCI (Universal host controller Interface) or OHCI (Open host controller Interface).

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对比于传统的主机病毒，在开放式网络环境中，网络病毒攻击能力更强、传播范围更广、破坏力度更大。

Compared to the traditional host virus, the network virus has more attack ability and is more infectious in open network environment.

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Nagios是一个中维监控软件用来监控主机、服务和网络的开放源码s of tware，许多大的公司或组织都在使用它。

Nagios is an open source host, service and network monitoring program. Who USES it? Lots of people, including many big companies and organizations.

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