Directing towards the security hidden trouble existing in Intranet, the paper researches into relative technique and model of access control strategy, it brings forwards that role_based access control can well guarantee the access security of network.

• 针对内部网信息访问存在安全隐患问题，本文对安全访问控制策略的有关方法和模型进行了研究，提出基于角色的访问控制策略可以很好地保证网络的访问安全性；