为了提高局域网中各个设备的资源利用率,不少网络管理人员都会将网络中的一些常用硬件设备,设置成共享状态,并授权给合法用户来访问。可是合法用户在访问这些被共享了的网络设备时,其他一些未授权用户也有可能“偷偷”去访问它们。为了防止非法用户破坏这些共享的网络设备,各位网络管理人员就应该想办法,让那些未授权 In order to improve the LAN resource utilization of various devices, many network managers will be some of the common hardware devices in the network, set to share the state, and authorized to legitimate users to access. However, when a legitimate user accesses these shared network devices, other unauthorized users may also “secretly” visit them. In order to prevent illegal users to destroy these shared network devices, network managers should find ways to make those unauthorized