NETWORK SECURITY ISSUES

Increasingly, distributed processing is used to achieve the availability and processing power required by today's information technology systems. Networks are an important element in this drive towards more responsive systems. These systems can vary in size from a few desk top machines connected together in a single office to a complex of mainframes, controllers and terminals owned by a variety of organizations worldwide. It is shown that much work has been done to establish the security services that can be provided to users of these networks. If these services are to achieve their desired level of service, however, careful attention must be paid to the way they are planned, implemented and, in particular, the way in which they are managed.