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Jesper M Johansson In this chapter: Access Control Terminology 55 Tools to Manage Permissions 79 Major Access Control Changes in Windows Server 2008 81 User Rights and Privileges 83 RBAC/AZMAN 88 Summary 88 Additional Resources 89 I know what you are thinking: We are two chapters into this book and all we have talked about so far is users! People! Who cares about them Well, I have good news and bad news The good news is that we are about to start delving into abstract and mysterious technical concepts such as security descriptors The bad news is that this is all to better serve our people and provide them with secure data access.

automation efforts. Testing with PCMCIA cards, for example, can be a time-consuming task. The operating systems need to support inserting and removing cards at any time. Some classes of tests such as network tests might need to be run with several different PCMCIA network cards. On the Windows CE team, we used a "PCMCIA Jukebox" to assist in this testing. The device contained six PCMCIA slots and a serial connection we could use to simulate physically inserting and removing cards from any of the six positions. We didn't have jukeboxes for every piece of peripheral hardware, but where we didn't we did have several "switcher" devices that allowed us to simulate plugging and unplugging other removable devices such as USB and 1394/Firewire devices using a serial connection. The Windows team makes heavy use of a device simulation framework to emulate hardware. The framework enables tests that otherwise might be unpractical, such as plugging in hundreds of devices or plugging and unplugging a device thousands of times.

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Ignoring the people for a while, which I know we would all very much prefer to do, objects are what we call the things we want to protect from the users (or provide the user access to if you have not worked in security as long as I have) In this chapter we will discuss the technologies used to control access to objects This is one of the more technical chapters in the book I believe it is important for an administrator to understand the core details of how these technologies work to be able to effectively manage Windows We will discuss tools for managing objects and how access control has changed in Windows Server 2008 and a small section on Role-Based Access Control appears at the end Before we get to those, however, I need to make sure the terminology is clear..

1. Mike Kelly, from Office Online, commenting on Jensen Harris s blog: http://blogs.msdn.com/jensenh/archive/ 2005/11/29/497861.aspx.

If you have not worked with fundamental Windows security constructs before, you have a lot of alien terms to learn. Even if you have worked with security infrastructure in other operating systems, some unique terminology is used in Windows. This section will define the major concepts used in access control in Windows.

Running the steps of the test case is the heart of automated testing, and a variety of execution methods is possible. One simple form of execution is to write and run a script or application. A simple test case written in Microsoft Visual Basic Scripting Edition (VBScript) to open and print a specified document in Microsoft Word can be implemented as follows:

Part I:

The basic unit of security management in Windows is a securable object. A securable object is simply some type of object that can have permissions applied to it. The securable object you probably have worked with the most is a file. In the NTFS file system, files and directories both can have permissions associated with them. As a practical matter, the permissions are actually stored in the file system metadata, not with the file itself but that is a technical detail that really does not matter to a system administrator. The different types of securable objects include:

3:

Set objWord = CreateObject("Word.Application") Set objDoc = objWord.Documents.Open("c:\tests\printtest.doc") objDoc.PrintOut() objWord.Quit

Files Directories Registry keys Active Directory objects Kernel objects (events, semaphores, mutexes) Services Threads Processes Firewall Ports (new with Windows Vista and Windows Server 2008) Window stations and desktops

All securable objects have one thing in common: they have a security descriptor (SD) associated with them. The SD is the construct that contains all the security information associated with the object. A security descriptor is not a particularly complicated construct. Figure 3-1 shows it in pictorial form.

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