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If someone should be able to access the terminal services server and client drives were mapped, the attacker might be able to obtain data from the client You know that research team members sometimes store the results of their work on the local computer You decide that this setting should be enabled; researchers should not be allowed to access their local drives when using a terminal services session 4 Decide which settings must be configured to comply with security policy Security policy requirements include the encryption of communications You note that the Set Client Connection Encryption Level setting allows you to require 128-bit encryption 5 Decide which settings must be configured to comply with company policies Company policy says to restrict certain activities of the researchers Table 114 provides guidelines for terminal services application features Five recom mendations that meet Tailspin Toys requirements are included in the table.

The following are the best practices for applying software restriction policies:

For a full review of terminal services settings, see the administrative template for any GPO 6 Test settings in a test network There are other parts of terminal services that must be tested You provide the testers with a copy of a table similar to 11-4 to use in their tests Create a GPO that includes settings for terminal services and test it as well 7 Implement your design in a local or domain group policy When the design is approved and tested, administrators will implement it in the domain..

Create a separate GPO for software restriction policies so you can disable them in an emergency without affecting the rest of your security settings. Test a software restriction policy before applying it to other computers. Do not disallow programs or files without the proper testing. Restrictions on certain files can seriously affect the operation of your computer or network. If you need to edit a software restriction policy, disable it. If you apply the policy in parts, and a user refreshes the policy before all of the parts are in effect, that user s computer might be adversely affected. If you experience problems with applied policies, reboot in safe mode. Software restriction policies do not apply in safe mode. If you accidentally lock down a workstation with software restriction policies, reboot in safe mode, log on as a local administrator, modify the policy, run Gpupdate.exe, reboot the computer, and log on normally. Use software restriction policies in conjunction with access control settings. Use caution when defining a default setting of Disallowed. When you set the default security level to Disallowed, every application is restricted. A policy must be applied for every application that you want to run.

public enum CascadeType { ALL, PERSIST, MERGE, REMOVE, REFRESH }

13-27

11-26

Table 13-1

The ALL value represents all of the cascade operations. The remaining values represent individual cascade operations. The cascade() attribute is an array of the cascade operations you want applied to your related entities.

11

Problem: The user receives an error message such as Windows cannot open this program because it has been prevented by a software restriction policy. For more infor mation, open the Event Viewer console or contact your system administrator. Or, on the command line, the message The system cannot execute the specified program appears. The default security level (or a rule) was set to Disallowed, and the software will not start. Check the event log to see if the software program is set to Disallowed and what rule is applied. Use Gpresult command-line tool to determine which policies apply. Check domain level pol icies for No Override settings.

Problem: Modified software restriction policies are not taking effect. Software restriction policies that are specified in a domain through Group Policy override any policies that are configured locally. This might imply that there is a policy from the domain that is overriding your setting. Group Policy might not have refreshed its set tings. Group Policy applies policy changes periodically; therefore, it is likely that the policy changes made in the directory have not yet been refreshed. The local computer on which you changed software restriction policies for the network cannot contact a domain controller.

Table 11-4

PERSIST has to deal with the creation of entities within the database. If we had a CascadeType of PERSIST on the Employee side of our one-to-one relationship, you would not have to persist your created Address as well. It would be created for you. The persistence provider also will execute the appropriate SQL INSERT statements in the ap-

The computer on which you modify software restriction policies must be able to contact a domain controller to update policy for a network. Ensure the computer can contact a domain controller.