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private SchoolClosedException(final String message) { super(message); } //--------------------------------------------------------------------------|| // Factory -----------------------------------------------------------------|| //--------------------------------------------------------------------------|| /** * Constructs a new exception with the specified, required message * @param message * @throws IllegalArgumentException If the message is not specified */ public static SchoolClosedException newInstance(final String message) throws IllegalArgumentException { // Precondition checks if (message == null) { throw new IllegalArgumentException("message must be specified"); } // Return return new SchoolClosedException(message);

Upgrade Windows 98 computers to Windows XP Professional. Although adding the Active Direc tory client to Windows 98 and configuring it to use NTLM will provide a secure authentication interface between the Windows 98 computers and the Windows Server 2003 domain, it pro vides no additional security benefits for the desktop computers or the overall domain. Upgrad ing to Windows XP Professional enables the use of Group Policy and file access security.

User profiles maintain consistency for users in their desktop environments by provid ing each user with the same desktop environment as the last time that he or she logged on to the computer. This lesson introduces user profiles and explains the differences between local user profiles, roaming user profiles, mandatory user profiles, and tem porary user profiles. It also discusses the use of home folders.

Configure a local user profile Manage a roaming user profile Manage a mandatory user profile Manage home folders

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} }

A user profile is a collection of folders and data that stores the user s current desktop environment, application settings, and personal data. A user profile also contains all of the network connections that are established when a user logs on to a computer, such as Start menu items and mapped drives to network servers. On computers running Windows Server 2003, user profiles automatically create and maintain the desktop set tings for each user s work environment on the local computer.

1. Design an account policy for the research domain. Include settings for both the password and account lockout policy.

A user profile contains configuration preferences and options for each user a snapshot of a user s desktop environment. Table 7-8 shows a sample of the settings con tained in a user profile.

Table 7-8

package org.jboss.ejb3.examples.ch15.secureschool.api; import org.jboss.ejb3.examples.ch15.secureschool.impl.Roles; /** * Represents a school holding doors which may be * opened by various users. Using the EJB Security model, * access to open a particular door may be blocked * to certain users. * * @author <a href="mailto:andrew.rubinger@jboss.org">ALR</a> * @version $Revision: $ */ public interface SecureSchoolLocalBusiness { // ---------------------------------------------------------------------------|| // Contracts -----------------------------------------------------------------|| // ---------------------------------------------------------------------------|| /** * Closes the school for business. At this point the * front door will be unlocked for all. * This method may only be called by users in role * {@link Roles#ADMIN}.

Answers may vary. The following table describes the configuration of the password and account lockout policies recommended for this research domain. Additional effort should be made to increase security with a written policy, some items of which cannot be implemented with tech nical controls, but must be enforced via other means. Training will help. In addition, each employee with access to the resources in the research domain should be fully aware of the policy and be convinced of the necessity of its implementation. Table

Parameters Saved All user-definable settings for Windows Explorer User-stored documents User-stored picture items Shortcuts to favorite locations on the Internet Any user-created mapped network drives Links to other computers on the network

Requiring a password to not be reused for at least 240 days (password history multiplied by minimum password age) will most likely prevent most password reuse. Requiring frequent password changes reduces the oppor tunities for an attacker to use a password cracker on cap tured credentials and even on a captured password database. Note that it reduces opportunities. Weak passwords can be cracked in much less than 21 days. When users must wait before changing their password, they cannot easily cycle through old password choices and reuse them.

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