c# barcode generator example Lesson 2 in C#.NET

Maker QR in C#.NET Lesson 2

Lesson 2
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Designing Authentication in a Heterogeneous Network
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Where remote access must be accomplished between Windows and other operating systems, use VPN to secure the authentication process as well as the session data. Provide Web enrollment where non-Windows and legacy Windows clients must obtain certificates. Where computer-to-computer or computer-to-device authentication is necessary outside of a Windows Server 2003 or Windows 2000 network, use certificates.
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Practice: Designing Authentication in a Heterogeneous Network
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In this practice, you will work with various parts of the task of designing authentication in a heterogeneous network, including hardening authentication and considering cost when designing security. Complete the exercises that follow. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter.
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Exercise 1: Hardening Authentication
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Read the following scenario and then answer the question that follows. Scenario Tailspin Toys has existing Windows 98, Windows NT 4.0 Workstation, Win dows 2000 Professional, and UNIX workstations. The UNIX workstations run applica tions critical to the research department, but there is no need for Windows users to access any UNIX applications. The UNIX workstations are not centrally managed. The users of UNIX workstations, however, do need access to resources in the Windows Server 2003 forest. Currently, they have two accounts and must use a Windows com puter to access the Windows resources. Review Question Answer the following question.
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1. How can you strengthen the authentication processes in Tailspin Toys
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6
Designing a Logical Authentication Strategy
Exercise 2: Considering Cost when Designing Security
Read the following scenario and then answer the questions that follow. Scenario Humongous Insurance has a large number of Windows 98 client computers. When the company implemented Windows Server 2003, it discovered that the Windows 98 computers could not authenticate to Windows Server 2003 domain controllers. Review Questions Answer the following questions.
1. What are possible solutions to this problem
2. What is the most cost-effective answer to this problem
3. Why is this the most cost-effective solution
4. What should you do to solve the problem and improve the security process Explain your answer.
Lesson 3
Establishing Account and Password Requirements for Information Security
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Lesson 3: Establishing Account and Password Requirements for Information Security
Just as authentication can be made more robust by selecting more secure authentica tion protocols, the process can also be improved by strengthening password controls. The first criteria for establishing secure account and password requirements is to not treat the development of an account policy as a trivial activity. Configuring the policy is a trivial activity; determining how to best secure an organization using these settings is not. Without implementing a proper account and password policy, your attempt to secure access to information resources will be futile.
After this lesson, you will be able to
Describe the process for establishing account and password requirements for informa
tion security.
Describe the qualities of strong passwords and password policies. Describe the password policies available for Windows Server 2003 based networks. Explain the technical controls for password policies and their limitations. Determine organizational climate and information sensitivity. Describe options for managing the need for multiple policies. Design a strong password policy. Explain the considerations for deciding to design an account lockout policy. Design an account lockout policy. Recommend alternatives to password-based authentication.
Estimated lesson time: 45 minutes
The Process: Establishing Account and Password Requirements for Information
Follow this process to establish account and password requirements: 1. Design a strong password policy. This includes the following steps: a. Make sure you understand the qualities of a strong password policy and the password policies that you can use in Windows Server 2003 based networks. These characteristics are implemented using technical controls, training, and enforcement.
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Designing a Logical Authentication Strategy
b. Identify the technical controls available for password policies, and review their limitations. To design a strong password policy, the designer must understand how to use the technical controls that are available in Windows Server 2003 and how these controls need to be supported. It is crucial that you don t just fill in the settings in the interface but that you take into account the real ities of the workplace. The design should support the technical controls. c. Determine the climate of the organization and the sensitivity of the informa tion the policy will protect. Security experts agree that a password policy must be created, but there is great disagreement about how that policy should be set. Part of your job is to determine the appropriate policy for the organiza tion at hand. This involves more than just understanding technical issues such as how to make a complex password or that longer passwords are harder to crack. You must also examine the culture of the organization, its tolerance for risk, and the nature of the data it protects. d. Identify the need, if any, for more than one password policy and how this can be managed. e. Review password policy guidelines, and design the password policy. 2. Decide whether you want an account lockout policy, and if you do, design it. An account lockout policy is a technical control that can block account access. 3. Be aware of alternatives to password-based authentication and be ready to make recommendations. Password-based authentication will always be subject to the weaknesses of human memory and misunderstanding. Strong password policies are often obviated by human practices such as writing down passwords in obvious places, and it is difficult to convince all employees to construct strong passwords and not to share them. Therefore, it is imperative that you be aware of and ready to recommend alternatives to password authentication. The rest of this lesson teaches the key elements of this process.
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