The Study Of The Theroy Of Network Isolation And The Key Thechologies

Problem of computer security is almost birth with computer. Especially, when the Internet is booming throughout the world, this problem is becoming more and more important.Face to all kinds of problems of network security and all kinds of corresponding resolvent like firewall. The more and more avanced technologies of information proposed the requirement of a higher level security degree. The Network Isolation technology that originated from Israel and American satisfied that requirement to some degree.Based on the situation today, this thesis study the principle of Network Security and of some of its key technologies, and the way to realize it. It also brings forth a model of Network Isolation system to ensure the isolation and exchange. The core of it cut down network t ransport protocols such as TCP/IP protocol, and scans the data by special software and hardware. During the progress of exchanging the datum, Intranet and Internet keep physical isolation to ensure the safe of datum exchange.