The Design Of Client Access Control System Based On The Winpcap

With the popularity and development of network, our life and work areincreasinggly dependent on networks. Network security of the application of thismethod has been mentioned in the schedule to the people. Along with the networkpopularization and wide application of network, enterprises and institutions in theirdaily normal operation acts as a more and more important role in enterprises andinstitutions, as in the establishment of its own internal network, some are not to let theenterprise or the branch outside people know. However, more and more networksecurity and regulatory problems also makes the network management to the networksecurity problem becomes more and more concern. So employees cannot work time toconcentrate, not very good job.The issue of the use of WinPcap development kits, using MFC to achieve throughthe LAN network packet capture, and the Ethernet head, TCP/IP protocol as well as themain application protocol is analyzed. From the general enterprise network needs tostart, consider the common network services, and generally facing the menace ofnetwork, designed the ARP virus defense, spam and intrusion model matching detectionfunction. This paper is mainly on the ARP virus defense process design, spam scanningprocess, intrusion detection structure functional design.Finally, this article has carried on the system testing, the functions and performancebasically achieved the expected goals of research and development. Through theanalysis of test results, summarize the advantages and disadvantages of the system. It ispointed out that this system ’s next development train of thought and direction.