The Research Of Access Control About Corba And RMI

Now,in the world,With the development of network technology,There are more and more people pay attention to technology of distributed handling business.Because the our objective is to receive the services from network system,then resource can be shared.But there are more questions in complex distributed system ,such as system's security.Resource has faced so big threaten comes from illegal user.So we should try to protect our system and research effective methods.Access control can protect our system when illegal user try to attack and steal resources. Actually, access control decides which subject can access what object.J2EE structure is well-rounded in distributed world. RMI can protect system'security. Through java's authentication and authorization,RMI can provide access control function.But in high level demand of security,RMI can not provide enough security mechanism.so CORBA is the right one. CORBA's security services include Access Control.The thesis discussed the basic knowledge of RMI and CORBA . Then stated the kind of access control.at last ,the thesis analysed the integration of CORBA in J2EE distributed system.and analysed CORBA security services's access control mechanism.in the end ,implemented a role based access control model .and stated the foreground of the model.