%0 Journal Article
%T Tracing the Source of Net-Virus<br>网络病毒的求源问题
%A HAN Lan-Sheng
%A HAN Shu-Xia
%A Varneg Washington
%A <br>韩兰胜
%A 韩淑霞
%J 计算机科学
%D 2006
%I 
%X As most papers about net viruses focus the similarity shared by net viruses and biological virus and the source tracing of the latter relies on many uncertain factors.Few paper establishes theory on the source tracing of net viruses.Different from those papers,this paper focuses on different spreading features of net virus compared with the biological virus,such as the spreading information of net virus can be recorded.Though tracing the source of virus is the inverse of the viruses spreading,but the paper thinks that tracing the source is not the strict inverse problem so far.The paper presents the definition for the source of viruses in a sub net the start vertex of the spreading path of the virus.The paper points out that state changing of the vertices caused by the spreading of the virus is the important hints to tracing the spreading path of the virus.The scanning and cleaning are main methods to get these hints.Then the paper establishes the source tracing equations for the net virus.Combining with the practice,the paper presents the main steps and methods to get the solutions to the equations.Working out the equations repeatedly,the paper get the spreading path of the virus;thus the start vertex of the path is got which must be the source of the virus in the sub net. Finally,the paper carries out the simulation test on an email group net.The results of the test verify our tracing model and methods of working out the equations.Thus the paper opens a theoretic way to tracing the source of net viruses.
%K Network virus
%K Network security
%K Tracing source of virus<br>网络病毒
%K 网络安全
%K 病毒求源
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=7E3D5DB0A4787946&yid=37904DC365DD7266&vid=27746BCEEE58E9DC&iid=9CF7A0430CBB2DFD&sid=5D311CA918CA9A03&eid=708DD6B15D2464E8&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=10