Research on cross-domain access control and border protection technique

In order to protect the information and network security during cross-domain access,this paper proposed a model for cross-domain access control and border protection based on in-depth analysis of the security risk faced by it.The model divided policy enforcement and policy decision into two phases:intra-domain and cross-domain,and applied various security techniques in addition.Also protected the confidentiality,integrity and availability during information transmission process effectively.As a result,solved the access control and border protection problems of cross-domain access process effectively.