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A Windows Vista-based or Windows Server 2008-based computer behind a NAT device cannot communicate with another computer through an IPsec tunnel-mode connection


View products that this article applies to.

Symptoms

You use a Windows Vista-based or Windows Server 2008-based computer that is behind a Network Address Translation (NAT) device. When you use this computer to try to communicate with another computer through an Internet Protocol security (IPsec) tunnel-mode connection, the connection fails.

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Cause

This issue may occur if more than one computer shares the same source port. Windows Vista and Windows Server 2008 do not support tunnel-mode connections when the computer is behind an NAT device. Therefore, a conflict may occur.

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Resolution

A hotfix is available to resolve this issue. This hotfix adds the support for IPsec when the computer is behind a NAT device.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the �Hotfix Request� page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, the computer must run one of the following:
  • Windows Vista Service Pack 1
  • Windows Server 2008

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes. The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista and Windows Server 2008 file information note


The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately . MUM and MANIFEST files, and the associated security catalog (.cat) files, are very important to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Vista and Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22260223,28809-Sep-200805:42x86
Bfe.dll6.0.6001.22260328,70409-Sep-200805:27x86
Fwpkclnt.sys6.0.6001.22260101,43209-Sep-200805:34x86
Fwpuclnt.dll6.0.6001.22260595,45609-Sep-200805:27x86
Ikeext.dll6.0.6001.22260438,27209-Sep-200805:27x86
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
Wfp.tmfNot Applicable175,50809-Sep-200803:28Not Applicable
Tcpip.sys6.0.6001.22260891,96009-Sep-200805:43x86
For all supported x64-based versions of Windows Vista and Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22260345,65609-Sep-200804:51x64
Bfe.dll6.0.6001.22260458,24009-Sep-200804:46x64
Fwpkclnt.sys6.0.6001.22260168,50409-Sep-200804:51x64
Fwpuclnt.dll6.0.6001.22260779,77609-Sep-200804:47x64
Ikeext.dll6.0.6001.22260454,65609-Sep-200804:47x64
Wfp.mofNot Applicable81418-Dec-200721:10Not Applicable
Wfp.tmfNot Applicable174,68009-Sep-200802:44Not Applicable
Tcpip.sys6.0.6001.222601,419,32009-Sep-200804:53x64
Fwpuclnt.dll6.0.6001.22260595,45609-Sep-200805:27x86
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
For all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Netio.sys6.0.6001.22260641,59209-Sep-200805:59IA-64
Bfe.dll6.0.6001.22260781,31209-Sep-200805:37IA-64
Fwpkclnt.sys6.0.6001.22260264,24809-Sep-200805:59IA-64
Fwpuclnt.dll6.0.6001.222601,122,30409-Sep-200805:37IA-64
Ikeext.dll6.0.6001.22260925,18409-Sep-200805:37IA-64
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable
Wfp.tmfNot Applicable174,77509-Sep-200803:50Not Applicable
Tcpip.sys6.0.6001.222602,924,08809-Sep-200805:58IA-64
Fwpuclnt.dll6.0.6001.22260595,45609-Sep-200805:27x86
Wfp.mofNot Applicable81418-Dec-200721:11Not Applicable

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More information

For more information about IPsec, visit the following Microsoft Web site:For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
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Time (UTC)18:14
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File versionNot Applicable
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Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
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File versionNot Applicable
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Time (UTC)18:14
File nameAmd64_e0becec4f14d89097510503c9a2122c2_31bf3856ad364e35_6.0.6001.22260_none_09fda7cbdc73fa5a.manifest
File versionNot Applicable
File size706
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File versionNot Applicable
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Additional files for all supported Itanium-based versions of Windows Server 2008
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Keywords: kbautohotfix, kbexpertiseadvanced, kbfix, kbqfe, KB957624

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Article Info
Article ID : 957624
Revision : 2
Created on : 10/8/2011
Published on : 10/8/2011
Exists online : False
Views : 349