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The practice tests on this book s companion CD offer many options. For example, you can test yourself on just the content covered in this chapter, or you can test yourself on all the 70-622 certification exam content. You can set up the test so that it closely simulates the experience of taking a certification exam, or you can set it up in study mode so that you can look at the correct answers and explanations after you answer each question.
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For details about all the practice test options available, see How to Use the Practice Tests in this book s Introduction.
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Authenticating, Authorizing, and Auditing Access to Resources
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You can use access control, also known as authorization, to control which users can access a file, registry key, printer, or other object. Before authorization can be effective, the operating system must validate a user s identity using a process known as authentication. Although authentication and authorization work together to provide data security, they can also cause problems by blocking access to authorized users. This chapter describes how to configure authentication and authorization and how to troubleshoot related security problems.
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Exam objectives in this chapter:
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Troubleshoot authentication issues. Configure and troubleshoot access to resources.
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Lessons in this chapter:
n n n
Lesson 1: Authenticating Users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 Lesson 2: Using Encryption to Control Access to Data. . . . . . . . . . . . . . . . . . . . . . . . . 292 Lesson 3: Troubleshooting Authorization Problems and Auditing User Access . . . . .314
Before You Begin
To complete the lessons in this chapter, you should be familiar with Windows Vista and be comfortable with the following tasks:
n n n
Installing Windows Vista and joining a domain Configuring Group Policy settings Performing basic configuration tasks of Microsoft Windows Server 2003 domain controllers
To complete all the practices in this chapter, you should have two networked Windows Vista computers.
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Authenticating, Authorizing, and Auditing Access to Resources
Lesson 1: Authenticating Users
Before a user can log on to a Windows Vista computer, connect to a shared folder, or browse a protected website, the resource must validate the user s identity using a process known as authentication. Windows Vista supports a variety of authentication techniques, including the traditional user name and password, smart cards, and third-party authentication components. Additionally, Windows Vista can authenticate users against the local user database or an Active Directory directory service domain. This lesson provides a basic background in authentication technologies and then describes how to audit logons and troubleshoot authentication problems.
After this lesson, you will be able to: n Describe authentication and list common authentication techniques. n Describe how the Windows Vista logon architecture differs from earlier versions of Windows. n Describe how Windows Vista provides an improved infrastructure for smart cards. n Manually add user names and passwords to Credential Manager to enable automatic authentication to network resources. n Troubleshoot authentication issues. Estimated lesson time: 20 minutes
What Is Authentication
Authentication is the process of identifying a user. In home environments authentication is often as simple as clicking a user name at the Windows Vista logon screen. However, in enterprise environments almost all authentication requests require users to provide both a user name (to identify themselves) and a password (to prove that they really are that person). Windows Vista also supports authentication using a smart card. The smart card, which is about the size of a credit card, contains a chip that stores a certificate that uniquely identifies the user. As long as a user doesn t give the smart card to someone else, inserting the smart card into a computer sufficiently proves the user s identity. Typically, users also need to type a password or personal identification number (PIN) to prove that they aren t using someone else s smart card. When you combine two forms of authentication (such as both typing a password and providing a smart card), it s called multifactor authentication. Multifactor authentication is much more secure than single-factor authentication. Biometrics is another popular form of authentication. Although a password proves your identity by testing something you know and a smart card tests something you have, biometrics test something you are by examining a unique feature of your physiology. Today the most
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