The Design And Implementation Of IPsec VPN Secure Midware In Windows

IPSec VPN is prevalent very much as a network security technology which provides inteative network security mechanism such as encryption, authentication, and access control.However,with the increase of network application, users are eager to the applicaiton of VPN on mobile office field, and advance higher demand for the adaptability and security of vpn in network.In this paper, we have studied IPSec VPN,access control,intercept and capture technology. And we designed and accomplished a ipsec vpn system based on Windows.The main work of this paper is as follows:1. Summarized the development of VPN technology.Analyzed and pointed out the development trend of VPN.2. Analyzed and Studied IPSec Protocol cluster,Pointed out its disadvantage of IPSec, given the smallest secure protocol set of IPSec.3. Analyzed and Studied the intercept and capture technology of Windows,Compared with TDI,NDIS,SPI technology,put forward the better case of IPSec VPN system based on Windows which can do with not only IP packet but also non-IP packet for different application system.4. By designing and BAN logical analysis of the protocol for VPN authentication and session key distribution security, we ensure the security of the VPN.5. Completed IPSec VPN system based on Windows.Designed user authencation and encryptation project which accomplishes concentrated management of users; Put forward a new protocol of secure tunnel establishment named DTEP which is used to negotiate secure parameters of commucation; Put forward secure audit based on users and data flows which is used to system test and run duty; the application of IPSec system based on Windows makes secure connection and access more flexible and more facility.