Study on the access control model

Access control is one of the main strategies for Network security prevention and protection. Its main task is to fully share system resources, manage user´s access rights, to ensure that network resources not from unauthorized access and use. Discretionary Access Control model is only suitable for small, closed application environment; Most of mandatory access control policy applied in the military field; In contrast, role-based access control policy is to implement security policies for enterprise access control is an effective way, currently, RBAC gained widespread applied in the rights management of large database systems. This paper via research on access control matrix, access control lists, access control capabilities lists, mandatory access control policy, role-based access control model and access control in Grid environment, detailed analysis of the current network access control mechanisms and application fields, pointed out these kinds of access control model and the advantages and disadvantages in the application of some of the issues that need attention.