VAN Technology Research to Virtual Enterprise

With the development of information technology and network technology,the concept of virtual enterprise has been widely applied. But an entire solution for the security problems in the virtual enterprise's information system is still lacking. The paper brings forward the concept of virtual application network (VAN). It also describes VAN's network stack structure and realization in client,and how to realize user-based and application-based route control model of application layer in sever. Through research and implementation of the VAN,a user-based and application-based access control can be offered to the virtual enterprise's information system,thus a safe,unified and transparent network platform can be provided to the virtual enterprise.