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The first step in designing the security baseline is to understand what the organization s security policy requires. After you have that information, the next step is to determine which security measures can be fulfilled by using the security templates. You should assign to the master template items that are common to all computer roles, and assign to individual supplemental templates those items that mark the difference between roles. You will have to determine your organization s security policy, but this section describes the security settings that you can implement through security templates. You must implement additional security policy with other tools. Table 11-2 lists each section and subsection of the template and describes how you can use them to implement security policy. You should examine sample templates available in the Security Tem plates snap-in to see the hundreds of possible security settings. You should understand that you can add and manage additional elements in the templates and that you can apply additional security settings using other Windows Server 2003 tools.

11-6

7. Build, run, and test your application to verify that it works correctly. Afterward, close the Calculator application and Visual Studio .NET. 8. Use Visual Studio .NET to open the Contoso project you created in Exercise 2. Modify the project by performing the following steps: a. Comment out the AssemblyKeyFile attribute. b. Change the + operator in the Add method to a -, to demonstrate how an attacker could maliciously modify an assembly. c. Rebuild the assembly. 9. Use Windows Explorer to copy the new, unsigned Contoso.dll file to the directory you used to build the Calculator project. You should overwrite the existing Contoso.dll file, which has a strong name. 10. Re-run Calculator by double-clicking the executable file in Windows Explorer. Click the Add button. An unhandled exception appears, as shown in Figure 7-4.

A problem can sometimes occur when a DBA can connect to the DAC on the default instance of a SQL Server 2005 server but cannot connect to the DAC endpoint on any of the named instances. In this case, you should verify that the instances are running, that client applications are able to access them, that the DAC is enabled for all instances, and that no other administrators are attempting to connect to the same DAC endpoints. In this situation, the solution is typically to start the SQL Server Browser service and configure this service to start automatically. The SQL Server Browser service listens for incoming requests for Microsoft SQL Server resources and provides information about SQL Server instances installed on the computer. SQL Server Browser performs the following tasks:

11

Browsing the Security Templates snap-in, even changing settings on the templates, does not change the security policy of any computer. To change security, you must apply the template. The exercises that follow provide complete instructions for loading, browsing, mod ifying, creating, and applying security templates.

Table 11-2

Figure 7-4 The runtime verifies the signature of strong-named assemblies against the signature that was present when the assembly was originally referenced.

Subsection Password Policy Account Lockout Policy Description The configuration for passwords, including minimum length, history, complexity, and frequency of change. The number of failed attempts before the account is locked out. How it is reset, and the amount of time between attempts that triggers the failed logon account to start over again. The ticket lifetime, ticket renewal time, whether user logon restrictions are honored, and clock skew time. The types of audit events that are logged. Options include account logon, account management, object auditing, pro cessing auditing, privilege use, and policy change. What users can do on the system. Rights include logon rights, backup and restore, and so on. The implementation of various security settings through Registry settings. A default listing includes items that affect authentication, narrow choices, prevent connection, and so on. The section Understanding Security Template Settings That Affect Network Security gives examples. Also, you can implement any Registry setting you make by adding it to a security template and applying the template. The ability to change size. Defines when logs are overwrit ten, how long records are retained, or both. The ability to manage the memberships of any Windows group. Groups managed here can be added to and accounts removed in the normal manner, but if the tem plate application is refreshed, the group membership is replaced by the membership listed here. The ability to change the startup setting (Disabled, Auto matic, or Manual) for individual services. Also, you can change security for services by determining who can stop, start, and modify startup settings for each service.

11-7

Browses the list of available servers Connects to the correct server instance Connects to DAC endpoints

Table 11-2