摘要
由大型主机与微局网通讯形成异种网络是充分发挥网络系统分布式处理能力,并充分利用大型主机存储管理能力的有效办法。本文对异种机联网中的主要问题进行了探讨,给出ISO七层模型低四层上实现异种机通讯的一种方法。 文章还进一步讨论了在分布式网络环境中的数据安全问题,讨论了包括软、硬件结合的键盘锁、软件用户口令、进程通讯同步控制和读写权控制等组成的多级安全体系。
Heterogeneous computer network, composed of a large computer as the master and several local microcomputer networks, is an effective way to make full use of decentralized processing ability of network systems and the memory management power of large computers. Main problems in connecting heterogeneous computers have been studied and a method to achieve communication between different types of computers at the lower 3 layers of the ISO 7 layers model is given.
Data security in distributed networks and multilevel security systems, consisting of keyboard locks, software user's passwords, synchronous control in communication etc. are also included.
出处
《北方工业大学学报》
1991年第1期86-96,共11页
Journal of North China University of Technology
关键词
计算机通讯
微机
数据安全
局域网
computer network, communication
heterogeneous computer, network communication, data security
