摘要
目前不少学校、单位、政府部门都建有几台电脑组成的小型局域网，这种网络构架相对比较简单，因此可能没有专职的网络管理员。但是接入互联网的计算机安全问题时时存在，病毒以及黑客的侵袭是每个网络使用者都要面临的问题。目前的局域网基本上都采用以广播为技术基础的以太网，任何两个节点之间的通信数据包，不仅为这两个节点的网卡所接收，也同时为处在同一以太网上的任何一个节点的网卡所截取。
At present, many schools, units, government departments have built several computer composed of small local area network, network architecture is relatively simple and therefore may not have full-time network administrator. However, access to the Internet computer security problems exist from time to time, and the virus and hacker＇ s attack to Intemet are the problems users have to face. At present, almost all of the local area network adopt Ethemet based on broadcast. Any communication packet between two nodes are received by the network ear of any node in the same Ethemet, not only for the two nodes related.
出处
《信息技术》
2009年第5期134-136,共3页
Information Technology
