The Research Of Worm Virus' Preventive Technique

The subject aims at studying the function of internet worm virus and prevention's methods, and making a systemic design and program which control the spread of internet worm virus by DNS service machine at the base of analysis of the typical internet worm virus samples.Internet is the largest computer network and the largest information convergence place in the whole world. However, sharing information brings people's convenience, either brings the information security problems. The computer virus technology at present is superior to itself 10 years ago, one of the chief distinction is the appearance of worm technology, the more serious thing is that the worm technology has become mature more and more in the past several years. The new worm virus appears almost everyday, the complicated degree get more and more increasing. The subject's purpose is analyzing the characteristic of worm virus comprehensively, making the tactics against worm and the arrangement way of security network.The subject firstly analyses the mydoom.worm which was in the first place of 10 famous viruses in 2004 and blaster.worm as well as worm.cycle.a which were profound. Secondly, I study and research the worm virus theory. The article emphasizes on the technological process of worm viruses, behavior character, scan strategy, function principle and its relationship with loophole, then conclude the character of worm virus and make good theory foundation for formulating tactics against worm.It is an arduous task to prevent and treat with network worm virus, and it is difficult to accomplish by one or two cleaning virus engines. The subject make routine strategy of prevention and treatment with internet worm through repeated practice, and draft specific measure to prevent and treat with worm virus in LAN. I pose a view by studying the principle of DNS service machine and invading monitor system, which takes advantage of DNS service machine to make ID deceit, further restrain the worm spreading, and make a detailed systematic design plan of three important packages monitor service machine, DNS service machine and WEB service machine, discussing the advantage and disadvantage of plan. In the meantime, the subject also point which the prevention and treatment with worm comprehensively is a complicated systematic project in fact, posing a view which sets up the omnidirectionalprevention and treatment system and three-dimensionally, and the arrangement way of security network.