Home > Articles > Security > Network Security

  • Print
  • + Share This
This chapter is from the book

This chapter is from the book

Authentication Policies

A number of specific settings can be applied through policies defined either locally, across a number of computers, or domainwide. Local policies on a single computer are configured with the Local Security Policy tool. Settings that are to be applied to a number of computers are configured with the Group Policy tool, and templates can be used to make configuration of a number of options easier. Domain account policies are defined in the Domain Group Policy. Account policies were discussed earlier in this chapter, so this section provides an overview of the authentication policy options that are available for the Windows XP network administrator in a nondomain environment. To modify any of these policies:

  1. Launch Control Panel, then select Administrative Tools, then select Local Security Policy.

  2. In the left-hand pane of the console select Local Policies, and then select the appropriate folder for the option you wish to modify.

  3. In the right-hand pane, right-click the policy you wish to modify and select Properties from the pop-up menu. The property sheet for that policy appears. Make changes as appropriate for the policy you are configuring.

User Rights Assignment

User rights pertain to the specific activities that users may perform, such as loading or unloading device drivers, limiting access to specific computers, or changing the system time. These rights can be assigned to a user or a group; Microsoft's stance is and always has been that it is better to set permissions and rights by group, rather than by individual users. If you only have a handful of users in your network, management by group may be more difficult than administering each user independently. However, if you have more than 10 to15 users, group management is usually easier in the long run. Regardless of whether you manage by users or groups, assigning rights uses the same process: Double-click the policy option under the User Rights assignment folder, click the Add User or Group button, and supply the appropriate user or group name(s).

The following user rights deal with authentication-related issues.

  • Access this computer from the network: Permits a user to connect to a specific computer via network.

  • Deny access to this computer from the network: Prohibits a remote user or group from accessing a specific computer from the network. Useful for securing servers with large numbers of directories that should not be accessed by anyone other than a specific group or user.

  • Allow logon through Terminal Services: Users are permitted to connect to the computer via terminal services.

  • Deny logon through Terminal Services: Disables terminal service access to specific users or groups, while still allowing those with "Allow logon through Terminal Services" rights to continue doing so.

  • Log on as a batch job: Allows a user, such as a service account, to log on by means of a batch job.

  • Deny logon as a batch job: Prevents specific users and groups from logging on as a batch.

  • Log on as a service: Enables accounts to log on as a service, in order to access resources on behalf of an application.

  • Deny logon as a service: Prevents specific users and groups from logging on as a service.

  • Log on locally: Permits users to use this computer locally.

  • Deny logon locally: Prohibits specific users or groups from using the computer locally. Useful in instances where a computer is in a public area but you want to limit the use to a specific user or two.

Security Options

Security Options govern specific configuration options that are used to increase or decrease security on a given computer. These options are assigned to the computer, not users or groups, unlike User Rights Assignment. All users of this computer are subject to these policies. The following Security Options deal with authentication-related issues and are located in the Security Options folder under Local Security Policy. To modify a policy, double-click it and make the necessary changes.

  • Do not display last user name: Hides the last username in the Control + Alt + Delete log-on screen. This makes it difficult for fraudulent users to access your network by guessing passwords based on known usernames.

  • Do not require CTRL+ALT+DEL: Eliminates the need to press Control + Alt + Delete to log on. This puts the user credentials at risk, as the MSGINA is no longer able to use a secure channel to transmit credentials, and a fraudulent user can capture the password, even without sending data over a network.

  • Message text for users attempting to log on: You can specify a legal warning or disclaimer that appears before users are permitted to log on.

  • Message title for users attempting to log on: This controls the title of the window where pre-log-on messages appear. Title suggestions include Warning, Notice, and Attention.

  • Number of previous logons to cache (in case a domain controller is not available): Sets the number of log-on attempts to be stored by a domain account. This is helpful for remote computers where an Internet connection must be made before a domain controller can be contacted. If the ISP has unreliable service, a domain user can be locked out if the connection cannot be made. The downside of this is that a fraudulent user can disconnect a computer from the network and use recently changed credentials to log in to the network without being blocked by a domain controller. Zero disables caching.

  • Prompt user to change password before expiration: Gives users a warning that they will be required to change account passwords in the near future.

  • Require domain controller authentication to unlock: Prevents a user from using cached credentials to log on to a computer that has been locked.

  • Smart card removal behavior: If smart cards are used, you can determine what will happen if a card is removed while the computer is in use. The choices are Lock workstation, Force Log off, and No action.

  • Allow anonymous SID/Name translation: Enables anonymous users to translate SIDs into usernames and vice versa.

  • Do not allow anonymous enumeration of SAM accounts: Prohibits anonymous users from enumerating the SAM.

  • Do not allow Stored User Names and Passwords to save passports or credentials for domain authentication: Prevents passport or domain authentication credentials from being saved after user has logged off, if Saved Passwords has been configured.

  • Sharing and security model for local accounts: Guest only requires all network logons to use the Guest account. Classic allows network users to use their own credentials.

  • Let Everyone permissions apply to Anonymous users: Grants Everyone group permissions to anonymous users.

  • Do not store LAN Manager hash value on next password change: LAN Manager hash is deleted after a password change.

  • Force log off when log-on time expires: Requires a user to be forcefully logged off the computer if a time constraint has been placed on his or her account. The account equivalent of Cinderella's carriage becoming a pumpkin at midnight.

  • LAN Manager Authentication Level: Sets LAN Manager authentication requirements for networks with down-level Windows hosts.

  • Minimum session security for NTLM SSP based (including secure RPC) clients: Permits configuration of the following options:

    • Require message integrity

    • Require message confidentiality

    • Require NTLMv2 session security

    • Require 128-bit encryption

  • Allow system to be shut down without having to log on: Permits or prohibits a computer from being shut down without the user being logged on.

  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020