【正文】 d all. 2. Wide spread Infection of a particular LAN client Taiwan, and the client can also further infection of other work client (including servers) infected with the virus and the client can further infection more client (including a puter outside the LAN) so many crossinfection, the virus spread in the work, in addition to speed, its spread is quite amazing. 3. Dissemination in the form of plex and diverse Network forms of transmission of the virus before we have already done a presentation here would not elaborate on the But with puter viruses innovation, I believe there will be even more we can not predict the form of dissemination. 4. Difficult to eradicate Single of puter viruses can sometimes through antivirus and virus deleted documents to resolve. If that does not work, such as lowlevel disk formatting can 4 measure the plete removal of the virus. Network, as long as they have a workstation could not cleanse, the whole work can be reinfected with the virus, have just pleted a work of the antivirus workstations, it may be another virus Inter workstations are infected. Therefore, to deal with the single form of antivirus, the LAN will be more pronounced, felt helpless. 5. Devastating SMEs office work is mainly for enterprise services. Virus attacks, the work will not only affect their normal work, and even more frightening is that it would collapse the work, damage to the puter work, so that work was ruined. 6. Sexual sparks It can be described as the hidden nature of the virus on the work extension, the work conditions for the virus to stimulate the diversification, it is the internal clock, the date and user name, it can also be a work of munication and so on. An HIV virus in accordance with the procedures designers, at the request of a workstation outbreak and spread to the entire work. 7. Potential In the work, once infected with the virus, even if the virus has been eliminated, the potential danger is enormous. According to the pany39。s internal work? If the answer is yes, is illustrated in internal work has no work layer take preventive measures. As the internal work and external public work between the first barrier Firewall is the first by the people39。s security policy and its internal state. Before forwarding a packet, a firewall may modify the packet39。 外文資料及中文譯文 院系名稱 信息科學(xué)與技術(shù)學(xué)院 學(xué)生姓名 學(xué)生學(xué)號(hào) __ 202103013098 專業(yè)班級(jí) _ 計(jì)科 03 7 指導(dǎo)教師 1 外文資料 出處： endtime1183219200 計(jì)算機(jī)世界報(bào) 第 03期 C20 A LAN may be created based on a peering or a clientserver. Small LANs are of ten created based on a simple peering relationship. Users may share resources and municate with one another on a peer work, but no single puter controls a peer work, and peer work users do not typically centralize files on one machine. As a rule, peer works tend to lack anization and adequate security controls. The clientserver architecture is usually used for sever controls work access and work resources. Clients request resources from the server, and the server provides resources to clients. Servers may range in plexity from mainframes to PCs. Clients may range in plexity from PCs to display to terminals (DTS). ClientServer works provide strong central security, centralized file anization and storage, and centralized data preservation. Compared to a peer work, a clientserver work requires more centralized and specialized administration. Along with the rapid scientific and technological development, puter use in production as a proportion growing, increasingly play a decisive role in the ministry, the office has puters, greatly facilitate the department39。s work, another demand gradually reveal themselves. That is the single transmission of information between. Computer works should be established as soon as possible on the agenda. Establish puter works main purpose is to realize a resource sharing that all work users can enjoy the puter systems of all or part of the resources. LAN are currently used t