Design and implementation of generic penetration gateway of network authentication client

Network authentication client realizes the restrictions of host routing and the control of extension of Internet and Intranet by monitoring the activities of non-binding Internet access network interface cards.A generic penetration gateway method by utilizing the network bridge and NAT service of virtual machines was proposed.The connection of Internet and Intranet can be realized under the network authentication client environment.Moreover, by composing the host with single or double network cards, three host operating systems of Microsoft and three virtual machine systems designed by different companies, various generic penetration gateway schemes can be generated to meet the needs of different applications.So the proposed method is very flexible and practical.