Research on Unified Network Access Control Architecture

Border access control, network security mechanism and system access control are three separately access control procedures when user accessing the resource on network.Network access control mechanism, which adding the authentication of endpoint´s platform besides the classical identity-based border access control, enhances the level of protection for network resources to some extent. In the existing network access control mechanisms, TNC has been trying to integrate the network access control mechanism and network security mechanism to add dynamic characteristics,but still can not cover the whole resource access control process. Once a user passes the authentication, he can still make damage to the system. This paper proposes a Unified Network Access Control (UNAC) architecture which effectively integrates the network access control, network security mechanism and system access control through the trust degree, and it can achieve dynamically user control during the resource accessing period.