Extended DACS Scheme Implementing Security Function

When customers with different membership and position use computers as in the university network systems, it often takes much time and efforts for them to manage a network system. This is because the requirements for the respective computer usage are different in network and security policies. In this paper, the destination addressing control system scheme (DACS scheme) for the university network services is shown. The DACS scheme performs network management efficiently through the communication control of a client. As the characteristic of DACS scheme, only the setup modification is required by a system administrator, when configuration change of the network system is done. Then, the setup modification by a customer is unnecessary, which shows a merit for both the system administrator and the customer. But, there are some security problems to be solved. In this paper, secure DACS scheme is proposed and examined. Secure DACS scheme has functions to prevent the communication from the client which DACS client is not installed in and to prevent information interception.