Abstract: I think the network and information security is not just technical problems， but also Now the world in recent years have recognized the network environment getting With the application of new technologies and to promote information security situation will be even much In this paper， it takes the major factors influence on computer network security as the breakthrough point， the focus of prevention unfavorable to the normal operation of the computer network， from different angles comprehensive understanding of the impact of computer network security， be aware of adverse factors will be resolved in the bud to ensure that the computer network security management and Key words: computer network information security competence network computer crime
With the improvement of science and technology and the rapid development of computer technology， computer 3 d modeling technology， particularly the reverse engineering technology in industry has been widely The design for the popular commercial central control panel (the instrument panel control board) as the research object， and study the central control panel dashboard appearance reverse engineering modelling methods， and reverse engineering concept， methods of the system in this First， through the flexible joint arm measuring instrument scanning for the central control panel of surface panels point cloud data， and by using the software of Imageware point cloud data processing， and through the NX0 UG software application based on surface reconstructing theory of the central control panel modelling dashboard surface reconstruction， and finally achieve the instrument panel of the central control panel surface reconstruction， produce its 3 d model， and through the 3 d model design is suitable for the production of injection The reconstruction of the NX0 UG design method mainly through the layered good point clouds line， and through the line for grid， sweeping and curve method such as group to curved surface， again through the surface and surface and surface of the clip， made between the central control the appearance of the panel dash of block， finally， to block for block suture into Then use edge down round， etc， make the entity optimization entity lines form become more beautiful and fluent， all the parts design concise details， reflecting the product beautiful sex， convenient and And the traditional design method is compared， reverse design method improves the work efficiency， and the shorter the new product development
In recent years the firewall is one kind of protection computer network security technical measure which develops， is also uses the most widespread one kind of network security to protect the technology at The firewall is or a group implements the access control strategy the system， it may be the software， the hardware or software and hardware's union， its goal is provides to the network safekeeping of The firewall usually is located at between the internal network and the exterior network， may monitor， the control and the change the network service which flows between the interior and the exterior network; Controls the exterior computer to be possible to visit the interior the environment which protects， and determined the visit the time， the jurisdiction， the service type and the quality and so on， the inspection interior spreads the information， avoids the privacy information flowing out， achieves resists exterior invades and prevents the goal which the insider information divulges a This article proposed firewall's disposition in network security's importance， has explained the firewall ruleset is the firewall product security important
Along with the technological level unceasing enhancement and the rapid development of computer technology， computer three-dimensional modelling technology， especially the reverse engineering technology in the industry has been widely This design with popular central control panel of MPV dash control board) (dash as the research object， the central control panel shape modelling of reverse engineering and the methods to reverse engineering concept， methods systemic First， through the flexible joint arm measuring instrument scanning access the control panel surface dashboard central point cloud data， then use Imageware software to point cloud data processing， finally through NX0 application software UG based on surface reconstructing theory central control panel modelling dashboard， and finally achieve the surface reconstruction dash soft-wares of central control panel， produce its 3d model， and designed by 3d models suitable for the production of injection UG design method for the reconstruction of the NX0 mainly through stratified good point clouds， and through the line for line grid， sweeping and curve method such as surface， made of surface and surface and by again face the clip， made between the appearance of central control panel dash of block， finally， to block for block stitched into Then use edge roundingoff， etc， make the optimized entity body become more solid lines fluent， each component design beautiful short and concise， reflecting the products from detail the beautiful sex， convenient and And the traditional top-down design method， the reverse design method compared improves the work efficiency， shorten the new product development
