Wyse Technology R90L, C90LE manual Changing Passwords with the File Based Write Filter

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Chapter 5

Caution

Contents of the File Based Write Filter cache should never be flushed if it is eighty-percent or more full. The Administrator should periodically check the status of the cache and restart the thin client if the cache is more than eighty percent full.

Note

A Terminal Services Client Access License (TSCAL) is always preserved regardless of File Based Write Filter state (enabled or disabled).

If you want to have other registry settings preserved regardless of File Based Write Filter state, contact Wyse support for help as described in "Wyse Technical Support."

For more detailed information on using the File Based Write Filter, refer to:

"Changing Passwords with the File Based Write Filter"

"Running File Based Write Filter Command Line Options"

"Enabling and Disabling the File Based Write Filter Using the Desktop Icons"

"Setting the File Based Write Filter Controls"

Changing Passwords with the File Based Write Filter

On Microsoft Windows NT-based computers and on Microsoft Windows 2000 or

2003-based computers, machine account passwords are regularly changed with the domain controller for security purposes. By default, on Windows NT-based computers, the machine account password automatically changes every seven days. On Windows 2000 or 2003-based computers, the machine account password automatically changes every 30 days.

The same password process is applicable for a thin client if the thin client is a member of such a domain. With the File Based Write Filter enabled, a thin client will successfully make this password change with the domain controller. However, since the File Based Write Filter is enabled, the next time the thin client is booted it will not retain the new password. In such cases, you can use the following options:

Disable the machine account password change on the thin client by setting the DisablePasswordChange registry entry to a value of 1.

Disable the machine account password change in Windows NT 4.0 or in Windows 2000 or 2003, by setting the RefusePasswordChange registry entry to a value of 1 on all domain controllers in the domain instead of on all workstations. Wyse thin clients will still attempt to change their passwords every 30 days, but the change will be rejected by the server.

Note

On Windows NT 4.0 domain controllers, you must change the RefusePasswordChange registry entry to a value of 1 on all Backup Domain Controllers (BDCs) in the domain before you make the change on the Primary Domain Controller (PDC). Failure to follow this order will cause event ID 5722 to be logged in the event log of the PDC.

If you set the RefusePasswordChange registry entry in the Windows 2000 or 2003 Domain Controller to a value of 1, the replication traffic will stop, but not the thin client traffic. If you also set the DisablePasswordChange registry entry to a value of 1 in the thin client, both thin client and replication traffic will stop.

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Contents Administrators Guide Wyse Thin Clients Based on Microsoft Windows XP EmbeddedCopyright Notices End User License Agreement License TrademarksPatents Restricted Rights Legend Ordering Information FCC StatementWireless Usage and Requirements Device Power SupplyRegulatory Compliance for Thin Clients Canadian DOC NoticesBattery Information Model Rx0LE Thin Client, Product R90LEContents Administrative Utilities and Settings System AdministrationVii Figures TablesViiiContents This page intentionally blank Summary of Revisions Wyse Technology Inc -01 Rev. LReference Description Wyse Technology Inc -01 Rev. KSummary of Revisions About this Guide IntroductionOrganization of this Guide Wyse Technical Support Finding the Information You Need in this GuideRelated Online Resources Available at Wyse Wyse Online CommunitySetting-Up Access to the Enterprise Servers Establishing a Server EnvironmentUnderstanding How to Configure Your Network Services Using Dynamic Host Configuration Protocol DhcpDhcp Options Description DNSUsing FTP File Servers Understanding Session Services Using DNSConfiguring ICA Session Services Configuring RDP Session ServicesUsing VMware View Manger Services Implementing View Client Support on Wyse Thin ClientsThis page intentionally blank Getting Started What Happens When You Turn on Your Thin ClientLogging On Automatic Logon Configuring the Thin ClientManual Log-on About the Automatically Launched Utilities Understanding the User Desktop User desktop exampleUnderstanding the Administrator Desktop Administrator desktop exampleLogging Off, Shutting Down, and Restarting Configuring and Using Peripherals Getting to Know the Extended FeaturesAccessing the Extended Features of the All Programs Menu Managing Connections with Citrix Program Neighborhood Viewing Client InformationBrowsing the Internet with Internet Explorer Establishing Remote Desktop ConnectionsUsing the Odyssey Client Manager Odyssey Client ManagerEricom PowerTerm TEC and Connect Synchronizing Thin Client Time with NeutronUsing VMware View Client to Connect to a Virtual Desktop VMware View Client extended viewAdministrator Control Panel Configuring Component Services Accessing and Using the Administrative ToolsAdministrative Tools window Managing Services Viewing EventsConfiguring WinVNC Current User Properties Managing UsersSetting Configuration Strings with Custom Fields Custom FieldsConfiguring Dual Monitor Display Configuring Dual Video VGA RAMConfiguring Touchscreens Configuring PrintersAdding Printers Select Do not share this printer and click NextSetting Ramdisk Size Ramdisk ConfigurationSelecting Regional and Language Options English US defaultControlling Sounds and Audio Devices Configuring WDM Properties Enabling and Disabling Automatic Logon Using WinlogConfiguring Wireless Local Area Network LAN Settings Configuring the Internal Wireless FeatureUsing Wireless Zero Configuration WZC Wireless Network Connection Properties dialog box Wireless Network Properties EAP-TLSSmart Card or other Certificate Properties EAP-TLS Configuring Wireless Thin Clients for PEAP-MS-CHAP ChapterGetting to Know the Extended Features Preserving Wireless Connections Enter Credentials PEAP-MS-CHAPUsing Peap Fast Reconnect Chapter Administrative Utilities and Settings Using the File Based Write Filter FbwfChanging Passwords with the File Based Write Filter Administrative Utilities and Settings Running File Based Write Filter Command Line Options Setting the File Based Write Filter Controls File Based Write Filter ControlCache Limit and Warning Settings area includes Understanding the NetXClean Utility Saving Files and Using Local Drives Saving FilesDrive Z Drive C and FlashParticipating in Domains Mapping Network DrivesJoining a Domain Using the Net and Tracert Utilities Using the WinPing Diagnostic UtilityUsing Roaming Profiles Managing Users and Groups with User Manager Creating New User AccountsConfiguring User Profiles Creating New GroupsChanging the Computer Name of a Thin Client Determining Group MembershipThis page intentionally blank System Administration Accessing Thin Client Bios SettingsInstalling and Upgrading Addons Manually Installing and Upgrading AddonsAutomatically Installing and Upgrading Addons FTP Addon Installer dialog box automatic exampleFTP Options complete one of the following Uninstalling Addons Using the FTP Addon Installer Using Windows Server Update Services Wsus on a Thin ClientConfiguring the Thin Client for Wsus Using Wsus on the Wyse Thin Client in Standalone Mode Automatic Software Updates on Wyse Thin Clients Using WsusPrerequisites Troubleshooting Wsus in Standalone Mode Wsus Log Format Date TimeComponent Text Wsus Components DescriptionWindows Update Log File Examples Service StartupWindows Update agent searches for available updates User is offered one update and chooses to install itTroubleshooting Wsus Used with SMS Configuring Wsus for Automatic Software Updates Using SMSAbout VB Scripts Using Wsus with WDM Wsus 2.0 Reports TabWindowsUpdate.log file-provides statistics Troubleshooting Wsus with WDMNetmon or Ethereal trace-shows data flow Using WinVNC to Shadow a Thin Client Setting VNC Server PropertiesSetting VNC Viewer Options VNC Connection DetailsVNC Connection Options VNC Authentication This page intentionally blank Figures Page Tables
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