The Design And Implementation Of Virtual LAN Environment Detect System

The rapid development of Internet technology has changed all aspects of our work and life,the network has become an indispensable part of daily work and life,many companies and other organizations build their own LAN system to enhance the enterprise information,to facilitate the sharing of internal resources and information communication.But the development of the network has also brought the most popular topic-network information security,how to ensure the security of network data has become an inevitable topic for all Internet users,and many companies also leak confidential data because of their own internal network,which has brought very serious losses to the company.Based on the research status and related technologies of virtual LAN at home and abroad,this thesis completes the design and implementation of LAN environment monitoring system.The system uses the traditional client /server(C/S)mode,the client is the basic information collection module,network packet monitoring module,web browsing monitoring module and e-mail service monitoring module,the basic data filtering processing is realized in the user client.The server is composed of remote client monitoring module,instant messaging control module and LAN security module.Each module coordinates and supports each other to form the overall architecture of the system.The system adopts the traditional three-layer architecture mode of persistence layer logic layer presentation layer,which ensures the high cohesion and low coupling of modules in the virtual LAN environment detection system.On the one hand,it ensures the stability of the system,on the other hand,it reduces the difficulty of later system maintenance.The system is implemented with Microsoft Visual Studio 2019 integrated development tool and C # language.