Article ID: 182569 - Last Review: December 6, 2007 - Revision: 16.2 Internet Explorer security zones registry entries for advanced usersThis article was previously published under Q182569 NoticeThis article is intended for support and for IT professionals. If you are not comfortable with advanced information, you might want to ask someone for help or contact support. For information about how to contact support, visit the following Microsoft Web site:http://support.microsoft.com/contactus/
(http://support.microsoft.com/contactus/)
For more information about how to manage security and privacy settings in Internet Explorer for home users, click the following article numbers to view the articles in the Microsoft Knowledge Base:
174360
(http://support.microsoft.com/kb/174360/
)
How to use security zones in Internet Explorer
283185
(http://support.microsoft.com/kb/283185/
)
How to manage cookies in Internet Explorer 6
On This PageSUMMARY This article describes how and where Internet Explorer
security zones and privacy settings are stored and managed in the registry. You
can use Group Policy or the Microsoft Internet Explorer Administration Kit
(IEAK) to set security zones and privacy settings. If you are using Group
Policy or IEAK on a Microsoft Windows 2000-based computer, you may have to
install several hotfixes to set security zones and privacy
settings.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
316116
(http://support.microsoft.com/kb/316116/
)
You
cannot manage Internet Explorer 6 Group Policies on a Windows 2000-based computer
MORE INFORMATIONPrivacy in Internet Explorer 6Internet Explorer 6 added a Privacy tab to give users more control over cookies. There are different levels of privacy on the Internet zone, and they are stored in the registry at the same location as the security zones.You can also add a Web site to enable or to block cookies based on the Web site, regardless of the privacy policy on the Web site. Those registry keys are stored in the following registry subkey: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet
Settings\P3P\History Domains that have been added as a
managed site are listed under this subkey. These domains can carry either of the following DWORD values:
0x00000005 - Always Block 0x00000001 - Always Allow Internet Explorer 5.0 and later versions of Internet ExplorerInternet Explorer security zones settings are stored under the following registry subkeys:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings These registry keys contain the following keys:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
If the Security Zones: Use only machine settings setting in Group Policy is enabled, or if the Security_HKLM_only DWORD value is present and has a value of 1 in the following registry subkey, only local computer settings are used and all users have the same security settings: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings With the Security_HKLM_only policy enabled, HKLM values will be
used by Internet Explorer. However, the HKCU values will still be displayed in the
zone settings on the Security tab in Internet Explorer. In Internet Explorer 7, the Security tab of the Internet Options dialog box displays the following message to indicate that settings are managed by the system administrator:
If
the Security Zones: Use only machine settings setting is not
enabled in Group Policy, or if the Security_HKLM_only DWORD value does not exist or is set to 0, computer settings are
used together with user settings. However, only user settings appear in the
Internet Options. For example, when this DWORD value does not exist or is set
to 0, HKEY_LOCAL_MACHINE
settings are read together with HKEY_CURRENT_USER settings, but only
HKEY_CURRENT_USER
settings appear in the Internet Options.TemplatePoliciesThe TemplatePolicies key determines the settings of the default security zone levels. These levels are Low, Medium Low, Medium, and High. You can change the security level settings from the default settings. However, you cannot add more security levels. The keys contain values that determine the setting for the security zone. Each key contains a Description string value and a Display Name string value that determine the text that appears on the Security tab for each security level.ZoneMapThe ZoneMap key contains the following keys:
The EscDomains key resembles the Domains key except that the EscDomains key applies to those protocols that are affected by the Enhanced Security Configuration (ESC). ESC is introduced in Microsoft Windows Server 2003. The ProtocolDefaults key specifies the default security zone that is used for a particular protocol (ftp, http, https). To change the default setting, you can either add a protocol to a security zone by clicking Add Sites on the Security tab, or you can add a DWORD value under the Domains key. The name of the DWORD value must match the protocol name, and it must not contain any colons (:) or slashes (/). The ProtocolDefaults key also contains DWORD values that specify the default security zones where a protocol is used. You cannot use the controls on the Security tab to change these values. This setting is used when a particular Web site does not fall in a security zone. The Ranges key contains ranges of TCP/IP addresses. Each TCP/IP range that you specify appears in an arbitrarily named key. This key contains a :Range string value that contains the specified TCP/IP range. For each protocol, a DWORD value is added that contains the numeric value of the security zone for the specified IP range. When the Urlmon.dll file uses the MapUrlToZone public function to resolve a particular URL to a security zone, it uses one of the following methods:
ZonesNote By default, starting with Windows XP SP2, the Local Machine Zone is locked down to help improve security. For more information, click the following article number to view the article in the Microsoft Knowledge Base:922704
(http://support.microsoft.com/kb/922704/
)
Information about some new Group Policy settings for Internet Explorer Security Zones in Microsoft Windows XP Service Pack 2 and in Microsoft Windows Server 2003 Service Pack 1
For more information, visit the following Microsoft Web site: http://technet2.microsoft.com/windowsserver/en/library/aebcfc94-25d5-4f41-93cc-7fb6e031de401033.mspx?mfr=true
(http://technet2.microsoft.com/windowsserver/en/library/aebcfc94-25d5-4f41-93cc-7fb6e031de401033.mspx?mfr=true)
The Zones
key contains keys that represent each security zone that is defined for the
computer. By default, the following five zones are defined (numbered zero
through four): Value Setting ------------------------------ 0 My Computer 1 Local Intranet Zone 2 Trusted sites Zone 3 Internet Zone 4 Restricted Sites Zone Each of these keys contains the following DWORD values that represent corresponding settings on the custom Security tab. Note Unless stated otherwise, each DWORD value is equal to zero, one, or three. Typically, a setting of zero sets a specific action as permitted, a setting of one causes a prompt to appear, and a setting of three prohibits the specific action. Value Setting ---------------------------------------------------------------------------------- 1001 ActiveX controls and plug-ins: Download signed ActiveX controls 1004 ActiveX controls and plug-ins: Download unsigned ActiveX controls 1200 ActiveX controls and plug-ins: Run ActiveX controls and plug-ins 1201 ActiveX controls and plug-ins: Initialize and script ActiveX controls not marked as safe for scripting 1206 Miscellaneous: Allow scripting of Internet Explorer Web browser control ^ 1207 Reserved # 1208 ActiveX controls and plug-ins: Allow previously unused ActiveX controls to run without prompt ^ 1209 ActiveX controls and plug-ins: Allow Scriptlets 120A ActiveX controls and plug-ins: Display video and animation on a webpage that does not use external media player ^ 1400 Scripting: Active scripting 1402 Scripting: Scripting of Java applets 1405 ActiveX controls and plug-ins: Script ActiveX controls marked as safe for scripting 1406 Miscellaneous: Access data sources across domains 1407 Scripting: Allow Programmatic clipboard access 1408 Reserved # 1601 Miscellaneous: Submit non-encrypted form data 1604 Downloads: Font download 1605 Run Java # 1606 Miscellaneous: Userdata persistence ^ 1607 Miscellaneous: Navigate sub-frames across different domains 1608 Miscellaneous: Allow META REFRESH * ^ 1609 Miscellaneous: Display mixed content * 160A Miscellaneous: Include local directory path when uploading files to a server ^ 1800 Miscellaneous: Installation of desktop items 1802 Miscellaneous: Drag and drop or copy and paste files 1803 Downloads: File Download ^ 1804 Miscellaneous: Launching programs and files in an IFRAME 1805 Launching programs and files in webview # 1806 Miscellaneous: Launching applications and unsafe files 1807 Reserved ** # 1808 Reserved ** # 1809 Miscellaneous: Use Pop-up Blocker ** ^ 180A Reserved # 180B Reserved # 180C Reserved # 180D Reserved # 1A00 User Authentication: Logon 1A02 Allow persistent cookies that are stored on your computer # 1A03 Allow per-session cookies (not stored) # 1A04 Miscellaneous: Don't prompt for client certificate selection when no certificates or only one certificate exists * ^ 1A05 Allow 3rd party persistent cookies * 1A06 Allow 3rd party session cookies * 1A10 Privacy Settings * 1C00 Java permissions # 1E05 Miscellaneous: Software channel permissions 1F00 Reserved ** # 2000 ActiveX controls and plug-ins: Binary and script behaviors 2001 .NET Framework-reliant components: Run components signed with Authenticode 2004 .NET Framework-reliant components: Run components not signed with Authenticode 2100 Miscellaneous: Open files based on content, not file extension ** ^ 2101 Miscellaneous: Web sites in less privileged web content zone can navigate into this zone ** 2102 Miscellaneous: Allow script initiated windows without size or position constraints ** ^ 2103 Scripting: Allow status bar updates via script ^ 2104 Miscellaneous: Allow websites to open windows without address or status bars ^ 2105 Scripting: Allow websites to prompt for information using scripted windows ^ 2200 Downloads: Automatic prompting for file downloads ** ^ 2201 ActiveX controls and plug-ins: Automatic prompting for ActiveX controls ** ^ 2300 Miscellaneous: Allow web pages to use restricted protocols for active content ** 2301 Miscellaneous: Use Phishing Filter ^ 2400 .NET Framework: XAML browser applications 2401 .NET Framework: XPS documents 2402 .NET Framework: Loose XAML 2500 Turn on Protected Mode [Vista only setting] # 2600 Enable .NET Framework setup ^ {AEBA21FA-782A-4A90-978D-B72164C80120} First Party Cookie * {A8A88C49-5EB2-4990-A1A2-0876022C854F} Third Party Cookie * * indicates an Internet Explorer 6 or later setting ** indicates a Windows XP Service Pack 2 or later setting # indicates a setting that is not displayed in the user interface in Internet Explorer 7 ^ indicates a setting that only has two options, enabled or disabled Notes about 1200, 1A00, 1A10, 1E05, 1C00, and 2000The following two registry entries affect whether you can run ActiveX controls in a particular zone:
Notes about 1A02, 1A03, 1A05, and 1A06The following four registry entries take only effect if the following keys are present:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\<ZoneNumber>
In this registry subkey, <ZoneNumber> is a zone such as 0 (zero). The 1200 registry entry and the 2000 registry entry each contain a setting that is named Administrator approved. When this setting is enabled, the value for the particular registry entry is set to 00010000. When the Administrator approved setting is enabled, Windows examines the following registry subkey to locate a list of approved controls:
HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls
Logon setting (1A00) may have any one
of the following values (hexadecimal): Value Setting --------------------------------------------------------------- 0x00000000 Automatically logon with current username and password 0x00010000 Prompt for user name and password 0x00020000 Automatic logon only in the Intranet zone 0x00030000 Anonymous logon
Block All Cookies: 00000003 Based on the settings in the slider, it will also modify the values
in {A8A88C49-5EB2-4990-A1A2-0876022C854F},
{AEBA21Fa-782A-4A90-978D-B72164C80120}, or both. High: 00000001 Medium High: 00000001 Medium: 00000001 Low: 00000001 Accept all Cookies: 00000000 Software channel permissions (1E05) has 3 different values; high, low, and medium safety. The values for these are as follows:
high: 00010000 The Java Permissions setting (1C00) has the following five
possible values (binary): medium: 00020000 low: 00030000 Value Setting ----------------------- 00 00 00 00 Disable Java 00 00 01 00 High safety 00 00 02 00 Medium safety 00 00 03 00 Low safety 00 00 80 00 Custom Each security zone contains the Description string value and the Display Name string value. The text of these values appears on the Security tab when you click a zone in the Zone box. There is also an Icon string value that sets the icon that appears for each zone. Except for the My Computer zone, each zone contains a CurrentLevel, MinLevel, and RecommendedLevel DWORD value. The MinLevel value sets the lowest setting that can be used before you receive a warning message, CurrentLevel is the current setting for the zone, and RecommendedLevel is the recommended level for the zone. What values for Minlevel, RecommendedLevel, and CurrentLevel mean the following: Value (Hexadecimal) Setting ---------------------------------- 0x00010000 Low Security 0x00010500 Medium Low Security 0x00011000 Medium Security 0x00012000 High Security Value Setting ------------------------------------------------------------------ 1 Allow changes to custom settings 2 Allow users to add Web sites to this zone 4 Require verified Web sites (https protocol) 8 Include Web sites that bypass the proxy server 16 Include Web sites not listed in other zones 32 Do not show security zone in Internet Properties (default setting for My Computer) 64 Show the Requires Server Verification dialog box 128 Treat Universal Naming Connections (UNCs) as intranet connections REFERENCESFor more information about changes to functionality in Microsoft Windows XP Service Pack 2 (SP2), visit the following Microsoft Web site: http://technet.microsoft.com/en-us/library/bb457150.aspx
(http://technet.microsoft.com/en-us/library/bb457150.aspx)
For more information about URL security zones, visit the following Microsoft Web site:http://msdn2.microsoft.com/en-us/library/ms537183.aspx
(http://msdn2.microsoft.com/en-us/library/ms537183.aspx)
For more information about how to run a local or an intranet Web page in the Internet zone, visit the following MSDN blog Web site:http://blogs.msdn.com/ie/archive/2007/02/13/Zones-and-Default-Settings.aspx
(http://blogs.msdn.com/ie/archive/2007/02/13/Zones-and-Default-Settings.aspx)
For more information about how to set up security zones, visit the following Microsoft Web site:
http://www.microsoft.com/windows/ie/ie6/using/howto/security/setup.mspx
(http://www.microsoft.com/windows/ie/ie6/using/howto/security/setup.mspx)
For more information about how to change Internet Explorer security settings, visit the following Microsoft Web site:
http://windowshelp.microsoft.com/Windows/en-US/Help/c9a5706f-0596-424f-bdfa-59618cb136e21033.mspx
(http://windowshelp.microsoft.com/Windows/en-US/Help/c9a5706f-0596-424f-bdfa-59618cb136e21033.mspx)
For more information about Internet Explorer Local Machine Zone Lockdown, visit the following Microsoft Web site:
http://technet2.microsoft.com/windowsserver/en/library/aebcfc94-25d5-4f41-93cc-7fb6e031de401033.mspx?mfr=true
(http://technet2.microsoft.com/windowsserver/en/library/aebcfc94-25d5-4f41-93cc-7fb6e031de401033.mspx?mfr=true)
APPLIES TO
|