Article ID: 2446500
When you run Microsoft Host Integration Server 2010 on a computer, incoming User Datagram Protocol (UDP) requests from the host system may be dropped.
This problem occurs because the installation of Host Integration Server 2010 adds a firewall rule to the local server firewall. This added rule creates a nonexistent dependency on the IP data link connection (IPDLC) service. This nonexistent dependency may block incoming requests over UDP ports 12000 - 12004.
To view the details of the added rule, at a command prompt, type the following command, and then press Enter:
netsh advfirewall firewall show rule IPDLC verboseThe details of the added rule resemble the following:
Rule Name: IPDLC----------------------------------------------------------------------Description: IP-DLC Link ServiceEnabled: YesDirection: InProfiles: Domain,Private,PublicGrouping: Host Integration ServerLocalIP: AnyRemoteIP: AnyProtocol: UDPLocalPort: 12000,12001,12002,12003,12004RemotePort: AnyEdge traversal: NoProgram: C:\Program Files\Host Integration Server\system\snalink.exeService: IPDLCInterfaceTypes: AnySecurity: NotRequiredRule source: Local SettingAction: AllowOk.
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. 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 website:
http://support.microsoft.com/contactus/?ws=supportNote 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.
PrerequisitesThere are no prerequisites for installing this hotfix.
Restart informationYou do not have to restart the computer after you apply this hotfix.
Replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe 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.
For the x86-based version of Microsoft Host Integration Server 2010
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For the x64-based version of Microsoft Host Integration Server 2010
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
After the update is applied, follow these steps to remove the existing IPDLC firewall rule and to add the updated IPDLC firewall rule:
Note These steps must be done even when you are applying a Host Integration Server 2010 Cumulative Update that includes this update. If the Host Integration Server 2010 server has the Network Integration feature configured, the only way to get the new IPDLC firewall rule is to unconfigure and configure the Network Integration feature.