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computer network internet security phần 8

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Có hai loại đối tượng: đối tượng chứa và không chứa các đối tượng. Các đối tượng container giữ các đối tượng khác, không chứa các đối tượng không có khả năng để bao gồm các đối tượng khác. Thư mục là các đối tượng container và các tập tin chứa các đối tượng không. | System Access Control List ACL controls the creation of auditing messages. There are two types of objects container objects and non-container objects. Container objects hold other objects non-container objects do not have the ability to include other objects. Directories are container objects and files are non-container objects. Child objects created within a parent container inherit permissions from the parent object. 9.2.1 NT Server vs NT Workstation There are two different types of Windows NT software available Windows NT Workstation and Windows NT Server. The Server version is the same as the Workstation version except that it provides additional features for networking. Only ten users can access a Windows NT Workstation at a time and NT Server can be accessed by an unlimited number of users dependent upon the license purchased. There may be some confusion between a server and a Windows NT Server. Windows NT Server is a piece of software where a server is a piece of hardware. 9.2.2 Workgroups There are two types of networking configurations in Windows NT Workgroups and Domains. A workgroup is an organizational unit of a single system or multiple systems not belonging to a domain. Systems in a workgroup individually manage their own user and group account information and their own security and account policy databases. They do not share this information with any other systems. If a system is not part of a domain it is automatically part of a workgroup. The best use of the workgroup configuration is for small groups of systems with few users or where the network is configured without an NT Server. Figure 1 Workgroup Model Illustration 216 Warning Security for Workgroups with systems running Windows 95 Windows 3.x or Windows for Workgroups is virtually eliminated due to the fact that anyonecan access the computers and copy files to a diskette. There is no secure logon process or object access controls to prevent users from accessing sensitive files. Therefore the