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diff --git a/docs/htmldocs/PolicyMgmt.html b/docs/htmldocs/PolicyMgmt.html new file mode 100644 index 0000000000..4adc7b6860 --- /dev/null +++ b/docs/htmldocs/PolicyMgmt.html @@ -0,0 +1,294 @@ +<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 23. System and Account Policies</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.60.1"><link rel="home" href="index.html" title="SAMBA Project Documentation"><link rel="up" href="optional.html" title="Part III. Advanced Configuration"><link rel="previous" href="AdvancedNetworkManagement.html" title="Chapter 22. Advanced Network Management"><link rel="next" href="ProfileMgmt.html" title="Chapter 24. Desktop Profile Management"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 23. System and Account Policies</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="AdvancedNetworkManagement.html">Prev</a> </td><th width="60%" align="center">Part III. Advanced Configuration</th><td width="20%" align="right"> <a accesskey="n" href="ProfileMgmt.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="PolicyMgmt"></a>Chapter 23. System and Account Policies</h2></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="othername">H.</span> <span class="surname">Terpstra</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><tt class="email"><<a href="mailto:jht@samba.org">jht@samba.org</a>></tt></p></div></div></div></div><div><p class="pubdate">April 3 2003</p></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="PolicyMgmt.html#id2953044">Features and Benefits</a></dt><dt><a href="PolicyMgmt.html#id2953137">Creating and Managing System Policies</a></dt><dd><dl><dt><a href="PolicyMgmt.html#id2953271">Windows 9x/ME Policies</a></dt><dt><a href="PolicyMgmt.html#id2953383">Windows NT4-Style Policy Files</a></dt><dt><a href="PolicyMgmt.html#id2953525">MS Windows 200x/XP Professional Policies</a></dt></dl></dd><dt><a href="PolicyMgmt.html#id2953826">Managing Account/User Policies</a></dt><dt><a href="PolicyMgmt.html#id2953985">Management Tools</a></dt><dd><dl><dt><a href="PolicyMgmt.html#id2954000">Samba Editreg Toolset</a></dt><dt><a href="PolicyMgmt.html#id2954096">Windows NT4/200x</a></dt><dt><a href="PolicyMgmt.html#id2954120">Samba PDC</a></dt></dl></dd><dt><a href="PolicyMgmt.html#id2954165">System Startup and Logon Processing Overview</a></dt><dt><a href="PolicyMgmt.html#id2954310">Common Errors</a></dt><dd><dl><dt><a href="PolicyMgmt.html#id2954324">Policy Does Not Work</a></dt></dl></dd></dl></div><p> +This chapter summarizes the current state of knowledge derived from personal +practice and knowledge from Samba mailing list subscribers. Before reproduction +of posted information, every effort has been made to validate the information given. +Where additional information was uncovered through this validation it is provided +also. +</p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2953044"></a>Features and Benefits</h2></div></div><div></div></div><p> +When MS Windows NT 3.5 was introduced, the hot new topic was the ability to implement +Group Policies for users and groups. Then along came MS Windows NT4 and a few sites +started to adopt this capability. How do we know that? By the number of “<span class="quote">booboos</span>” +(or mistakes) administrators made and then requested help to resolve. +</p><p> +<a class="indexterm" name="id2953070"></a> +<a class="indexterm" name="id2953078"></a> +<a class="indexterm" name="id2953087"></a> +By the time that MS Windows 2000 and Active Directory was released, administrators +got the message: Group Policies are a good thing! They can help reduce administrative +costs and actually make happier users. But adoption of the true +potential of MS Windows 200x Active Directory and Group Policy Objects (GPOs) for users +and machines were picked up on rather slowly. This was obvious from the Samba +mailing list as in 2000 and 2001 when there were few postings regarding GPOs and +how to replicate them in a Samba environment. +</p><p> +Judging by the traffic volume since mid 2002, GPOs have become a standard part of +the deployment in many sites. This chapter reviews techniques and methods that can +be used to exploit opportunities for automation of control over user desktops and +network client workstations. +</p><p> +A tool new to Samba the <b class="command">editreg</b> tool + may become an important part of the future Samba administrators' +arsenal is described in this document. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2953137"></a>Creating and Managing System Policies</h2></div></div><div></div></div><p> +Under MS Windows platforms, particularly those following the release of MS Windows +NT4 and MS Windows 95, it is possible to create a type of file that would be placed +in the NETLOGON share of a Domain Controller. As the client logs onto the network, +this file is read and the contents initiate changes to the registry of the client +machine. This file allows changes to be made to those parts of the registry that +affect users, groups of users, or machines. +</p><p> +<a class="indexterm" name="id2953161"></a> +For MS Windows 9x/ME, this file must be called <tt class="filename">Config.POL</tt> and may +be generated using a tool called <tt class="filename">poledit.exe</tt>, better known as the +Policy Editor. The policy editor was provided on the Windows 98 installation CD, but +disappeared again with the introduction of MS Windows Me (Millennium Edition). From +comments of MS Windows network administrators, it would appear that this tool became +a part of the MS Windows Me Resource Kit. +</p><p> +<a class="indexterm" name="id2953195"></a> +MS Windows NT4 Server products include the <span class="emphasis"><em>System Policy Editor</em></span> +under <span class="guimenu">Start -> Programs -> Administrative Tools</span>. +For MS Windows NT4 and later clients, this file must be called <tt class="filename">NTConfig.POL</tt>. +</p><p> +New with the introduction of MS Windows 2000 was the Microsoft Management Console +or MMC. This tool is the new wave in the ever-changing landscape of Microsoft +methods for management of network access and security. Every new Microsoft product +or technology seems to make the old rules obsolete and introduces newer and more +complex tools and methods. To Microsoft's credit, the MMC does appear to +be a step forward, but improved functionality comes at a great price. +</p><p> +Before embarking on the configuration of network and system policies, it is highly +advisable to read the documentation available from Microsoft's Web site regarding +<ulink url="http://www.microsoft.com/ntserver/management/deployment/planguide/prof_policies.asp"> +Implementing Profiles and Policies in Windows NT 4.0</ulink> available from Microsoft. +There are a large number of documents in addition to this old one that should also +be read and understood. Try searching on the Microsoft Web site for “<span class="quote">Group Policies</span>”. +</p><p> +What follows is a brief discussion with some helpful notes. The information provided +here is incomplete you are warned. +</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2953271"></a>Windows 9x/ME Policies</h3></div></div><div></div></div><p> + You need the Windows 98 Group Policy Editor to set up Group Profiles under Windows 9x/ME. + It can be found on the original full product Windows 98 installation CD under + <tt class="filename">tools/reskit/netadmin/poledit</tt>. Install this using the + Add/Remove Programs facility and then click on <span class="guiicon">Have Disk</span>. + </p><p> +<a class="indexterm" name="id2953305"></a> + Use the Group Policy Editor to create a policy file that specifies the location of + user profiles and/or <tt class="filename">My Documents</tt>, and so on. Then save these + settings in a file called <tt class="filename">Config.POL</tt> that needs to be placed in the + root of the <i class="parameter"><tt>[NETLOGON]</tt></i> share. If Windows 98 is configured to log onto + the Samba Domain, it will automatically read this file and update the Windows 9x/Me registry + of the machine as it logs on. + </p><p> + Further details are covered in the Windows 98 Resource Kit documentation. + </p><p> + If you do not take the correct steps, then every so often Windows 9x/ME will check the + integrity of the registry and restore its settings from the back-up + copy of the registry it stores on each Windows 9x/ME machine. So, you will + occasionally notice things changing back to the original settings. + </p><p> + Install the group policy handler for Windows 9x/Me to pick up Group Policies. Look on the + Windows 98 CDROM in <tt class="filename">\tools\reskit\netadmin\poledit</tt>. + Install group policies on a Windows 9x/Me client by double-clicking on + <tt class="filename">grouppol.inf</tt>. Log off and on again a couple of times and see + if Windows 98 picks up Group Policies. Unfortunately, this needs to be done on every + Windows 9x/Me machine that uses Group Policies. + </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2953383"></a>Windows NT4-Style Policy Files</h3></div></div><div></div></div><p> + To create or edit <tt class="filename">ntconfig.pol</tt> you must use the NT Server + Policy Editor, <b class="command">poledit.exe</b>, which is included with NT4 Server + but not with NT Workstation. There is a Policy Editor on an NT4 + Workstation but it is not suitable for creating domain policies. + Furthermore, although the Windows 95 Policy Editor can be installed on an NT4 + Workstation/Server, it will not work with NT clients. However, the files from + the NT Server will run happily enough on an NT4 Workstation. + </p><p> + You need <tt class="filename">poledit.exe</tt>, <tt class="filename">common.adm</tt> and <tt class="filename">winnt.adm</tt>. + It is convenient to put the two <tt class="filename">*.adm</tt> files in the <tt class="filename">c:\winnt\inf</tt> + directory, which is where the binary will look for them unless told otherwise. This + directory is normally “<span class="quote">hidden.</span>” + </p><p> + The Windows NT policy editor is also included with the Service Pack 3 (and + later) for Windows NT 4.0. Extract the files using <b class="command">servicepackname /x</b>, + that's <b class="command">Nt4sp6ai.exe /x</b> for service pack 6a. The Policy Editor, + <b class="command">poledit.exe</b>, and the associated template files (*.adm) should + be extracted as well. It is also possible to downloaded the policy template + files for Office97 and get a copy of the Policy Editor. Another possible + location is with the Zero Administration Kit available for download from Microsoft. + </p><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2953495"></a>Registry Spoiling</h4></div></div><div></div></div><p> + With NT4-style registry-based policy changes, a large number of settings are not + automatically reversed as the user logs off. The settings that were in the + <tt class="filename">NTConfig.POL</tt> file were applied to the client machine registry and apply to the + hive key HKEY_LOCAL_MACHINE are permanent until explicitly reversed. This is known + as tattooing. It can have serious consequences downstream and the administrator must + be extremely careful not to lock out the ability to manage the machine at a later date. + </p></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2953525"></a>MS Windows 200x/XP Professional Policies</h3></div></div><div></div></div><p> + Windows NT4 system policies allow the setting of registry parameters specific to + users, groups and computers (client workstations) that are members of the NT4-style + domain. Such policy files will work with MS Windows 200x/XP clients also. + </p><p> + New to MS Windows 2000, Microsoft recently introduced a style of group policy that confers + a superset of capabilities compared with NT4-style policies. Obviously, the tool used + to create them is different, and the mechanism for implementing them is much improved. + </p><p> +<a class="indexterm" name="id2953554"></a> + The older NT4-style registry-based policies are known as <span class="emphasis"><em>Administrative Templates</em></span> + in MS Windows 2000/XP Group Policy Objects (GPOs). The later includes the ability to set various security + configurations, enforce Internet Explorer browser settings, change and redirect aspects of the + users desktop (including the location of <tt class="filename">My Documents</tt> files (directory), as + well as intrinsics of where menu items will appear in the Start menu). An additional new + feature is the ability to make available particular software Windows applications to particular + users and/or groups. + </p><p> + Remember, NT4 policy files are named <tt class="filename">NTConfig.POL</tt> and are stored in the root + of the NETLOGON share on the Domain Controllers. A Windows NT4 user enters a username, password + and selects the domain name to which the logon will attempt to take place. During the logon process, + the client machine reads the <tt class="filename">NTConfig.POL</tt> file from the NETLOGON share on + the authenticating server and modifies the local registry values according to the settings in this file. + </p><p> + Windows 200x GPOs are feature-rich. They are not stored in the NETLOGON share, but rather part of + a Windows 200x policy file is stored in the Active Directory itself and the other part is stored + in a shared (and replicated) volume called the SYSVOL folder. This folder is present on all Active + Directory Domain Controllers. The part that is stored in the Active Directory itself is called the + Group Policy Container (GPC), and the part that is stored in the replicated share called SYSVOL is + known as the Group Policy Template (GPT). + </p><p> + With NT4 clients, the policy file is read and executed only as each user logs onto the network. + MS Windows 200x policies are much more complex GPOs are processed and applied at client machine + startup (machine specific part) and when the user logs onto the network, the user-specific part + is applied. In MS Windows 200x-style policy management, each machine and/or user may be subject + to any number of concurrently applicable (and applied) policy sets (GPOs). Active Directory allows + the administrator to also set filters over the policy settings. No such equivalent capability + exists with NT4-style policy files. + </p><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="id2953643"></a>Administration of Windows 200x/XP Policies</h4></div></div><div></div></div><p> +<a class="indexterm" name="id2953655"></a> +<a class="indexterm" name="id2953663"></a> + Instead of using the tool called <span class="application">The System Policy Editor</span>, commonly called Poledit (from the + executable name <b class="command">poledit.exe</b>), <span class="acronym">GPOs</span> are created and managed using a + <span class="application">Microsoft Management Console</span> <span class="acronym">(MMC)</span> snap-in as follows:</p><div class="procedure"><ol type="1"><li><p> + Go to the Windows 200x/XP menu <span class="guimenu">Start->Programs->Administrative Tools</span> + and select the MMC snap-in called <span class="guimenuitem">Active Directory Users and Computers</span> + </p></li><li><p> + Select the domain or organizational unit (OU) that you wish to manage, then right-click + to open the context menu for that object, and select the <span class="guibutton">Properties</span>. + </p></li><li><p> + Left-click on the <span class="guilabel">Group Policy</span> tab, then + left-click on the New tab. Type a name + for the new policy you will create. + </p></li><li><p> + Left-click on the <span class="guilabel">Edit</span> tab to commence the steps needed to create the GPO. + </p></li></ol></div><p> + All policy configuration options are controlled through the use of policy administrative + templates. These files have an .adm extension, both in NT4 as well as in Windows 200x/XP. + Beware, however, the .adm files are not interchangeable across NT4 and Windows 200x. + The latter introduces many new features as well as extended definition capabilities. It is + well beyond the scope of this documentation to explain how to program .adm files; for that + the administrator is referred to the Microsoft Windows Resource Kit for your particular + version of MS Windows. + </p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p> + The MS Windows 2000 Resource Kit contains a tool called gpolmig.exe. This tool can be used + to migrate an NT4 NTConfig.POL file into a Windows 200x style GPO. Be VERY careful how you + use this powerful tool. Please refer to the resource kit manuals for specific usage information. + </p></div></div></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2953826"></a>Managing Account/User Policies</h2></div></div><div></div></div><p> +Policies can define a specific user's settings or the settings for a group of users. The resulting +policy file contains the registry settings for all users, groups, and computers that will be using +the policy file. Separate policy files for each user, group, or computer are not necessary. +</p><p> +<a class="indexterm" name="id2953848"></a> +If you create a policy that will be automatically downloaded from validating Domain Controllers, +you should name the file <tt class="filename">NTConfig.POL</tt>. As system administrator, you have the option of renaming the +policy file and, by modifying the Windows NT-based workstation, directing the computer to update +the policy from a manual path. You can do this by either manually changing the registry or by using +the System Policy Editor. This can even be a local path such that each machine has its own policy file, +but if a change is necessary to all machines, it must be made individually to each workstation. +</p><p> +When a Windows NT4/200x/XP machine logs onto the network, the client looks in the NETLOGON share on +the authenticating domain controller for the presence of the NTConfig.POL file. If one exists it is +downloaded, parsed and then applied to the user's part of the registry. +</p><p> +<a class="indexterm" name="id2953887"></a> +MS Windows 200x/XP clients that log onto an MS Windows Active Directory security domain may additionally +acquire policy settings through Group Policy Objects (GPOs) that are defined and stored in Active Directory +itself. The key benefit of using AS GPOs is that they impose no registry <span class="emphasis"><em>spoiling</em></span> effect. +This has considerable advantage compared with the use of <tt class="filename">NTConfig.POL</tt> (NT4) style policy updates. +</p><p> +In addition to user access controls that may be imposed or applied via system and/or group policies +in a manner that works in conjunction with user profiles, the user management environment under +MS Windows NT4/200x/XP allows per domain as well as per user account restrictions to be applied. +Common restrictions that are frequently used include: +</p><p> +<a class="indexterm" name="id2953928"></a> +</p><div class="itemizedlist"><ul type="disc"><li>Logon hours</li><li>Password aging</li><li>Permitted logon from certain machines only</li><li>Account type (local or global)</li><li>User rights</li></ul></div><p> +</p><p> +Samba-3.0.0 doe not yet implement all account controls that are common to MS Windows NT4/200x/XP. +While it is possible to set many controls using the Domain User Manager for MS Windows NT4, only password +expirey is functional today. Most of the remaining controls at this time have only stub routines +that may eventually be completed to provide actual control. Do not be misled by the fact that a +parameter can be set using the NT4 Domain User Manager or in the <tt class="filename">NTConfig.POL</tt>. +</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2953985"></a>Management Tools</h2></div></div><div></div></div><p> +Anyone who wishes to create or manage Group Policies will need to be familiar with a number of tools. +The following sections describe a few key tools that will help you to create a low maintenance user +environment. +</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2954000"></a>Samba Editreg Toolset</h3></div></div><div></div></div><p> +<a class="indexterm" name="id2954011"></a> +<a class="indexterm" name="id2954020"></a> +<a class="indexterm" name="id2954028"></a> + A new tool called <b class="command">editreg</b> is under development. This tool can be used + to edit registry files (called <tt class="filename">NTUser.DAT</tt>) that are stored in user + and group profiles. <tt class="filename">NTConfig.POL</tt> files have the same structure as the + <tt class="filename">NTUser.DAT</tt> file and can be edited using this tool. <b class="command">editreg</b> + is being built with the intent to enable <tt class="filename">NTConfig.POL</tt> files to be saved in text format and to + permit the building of new <tt class="filename">NTConfig.POL</tt> files with extended capabilities. It is proving difficult + to realize this capability, so do not be surprised if this feature does not materialize. Formal + capabilities will be announced at the time that this tool is released for production use. + </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2954096"></a>Windows NT4/200x</h3></div></div><div></div></div><p> + The tools that may be used to configure these types of controls from the MS Windows environment are: + the NT4 User Manager for Domains, the NT4 System and Group Policy Editor, and the Registry Editor (regedt32.exe). + Under MS Windows 200x/XP, this is done using the Microsoft Management Console (MMC) with appropriate + “<span class="quote">snap-ins,</span>” the registry editor, and potentially also the NT4 System and Group Policy Editor. + </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2954120"></a>Samba PDC</h3></div></div><div></div></div><p> + With a Samba Domain Controller, the new tools for managing user account and policy information include: + <b class="command">smbpasswd</b>, <b class="command">pdbedit</b>, <b class="command">net</b>, <b class="command">rpcclient</b>. + The administrator should read the man pages for these tools and become familiar with their use. + </p></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2954165"></a>System Startup and Logon Processing Overview</h2></div></div><div></div></div><p> +The following attempts to document the order of processing the system and user policies following a system +reboot and as part of the user logon: +</p><div class="orderedlist"><ol type="1"><li><p> + Network starts, then Remote Procedure Call System Service (RPCSS) and Multiple Universal Naming + Convention Provider (MUP) start. + </p></li><li><p> + Where Active Directory is involved, an ordered list of Group Policy Objects (GPOs) is downloaded + and applied. The list may include GPOs that: +</p><div class="itemizedlist"><ul type="disc"><li><p>Apply to the location of machines in a Directory.</p></li><li><p>Apply only when settings have changed.</p></li><li><p>Depend on configuration of the scope of applicability: local, + site, domain, organizational unit, and so on.</p></li></ul></div><p> + No desktop user interface is presented until the above have been processed. + </p></li><li><p> + Execution of start-up scripts (hidden and synchronous by default). + </p></li><li><p> + A keyboard action to effect start of logon (Ctrl-Alt-Del). + </p></li><li><p> + User credentials are validated, user profile is loaded (depends on policy settings). + </p></li><li><p> + An ordered list of user GPOs is obtained. The list contents depends on what is configured in respect of: + +</p><div class="itemizedlist"><ul type="disc"><li>Is the user a Domain Member, thus subject to particular policies?</li><li>Loopback enablement, and the state of the loopback policy (Merge or Replace).</li><li>Location of the Active Directory itself.</li><li>Has the list of GPOs changed? No processing is needed if not changed.</li></ul></div><p> + </p></li><li><p> + User Policies are applied from Active Directory. Note: There are several types. + </p></li><li><p> + Logon scripts are run. New to Windows 200x and Active Directory, logon scripts may be obtained based on Group + Policy objects (hidden and executed synchronously). NT4-style logon scripts are then run in a normal + window. + </p></li><li><p> + The User Interface as determined from the GPOs is presented. Note: In a Samba domain (like an NT4 + Domain), machine (system) policies are applied at start-up; user policies are applied at logon. + </p></li></ol></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2954310"></a>Common Errors</h2></div></div><div></div></div><p> +Policy-related problems can be quite difficult to diagnose and even more difficult to rectify. The following +collection demonstrates only basic issues. +</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2954324"></a>Policy Does Not Work</h3></div></div><div></div></div><p> +“<span class="quote">We have created the <tt class="filename">Config.POL</tt> file and put it in the <span class="emphasis"><em>NETLOGON</em></span> share. +It has made no difference to our Win XP Pro machines, they just do not see it. It worked fine with Win 98 but does not +work any longer since we upgraded to Win XP Pro. Any hints?</span>” +</p><p> +Policy files are not portable between Windows 9x/Me and MS Windows NT4/200x/XP-based platforms. You need to +use the NT4 Group Policy Editor to create a file called <tt class="filename">NTConfig.POL</tt> so it is in the +correct format for your MS Windows XP Pro clients. +</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="AdvancedNetworkManagement.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="optional.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ProfileMgmt.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 22. Advanced Network Management </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 24. Desktop Profile Management</td></tr></table></div></body></html> |