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The Terminal Server (TS) Gateway Network Access Protection (NAP) Wizard does not set correctly the TSG-Device-Redirection device redirection attribute for the TS Gateway on a Windows Server 2008-based computer. Therefore, the attribute is interpreted in an unpredictable way by the TS Gateway.
To work around this issue, follow these steps:
Start the TS Gateway Microsoft Management Console (MMC) snap-in. To do this, click Start, type TS Gateway in the Start Search box, and then click TS Gateway Manager.
Reset the attributes of the network policies that are created by the NAP Wizard to the correct values.
You can configure the TS Gateway to use a new vendor-specific attribute that is named TSG-Device-Redirection to store device redirection attributes for policies in the TS Gateway. This new attribute can be configured only through the TS Gateway user interface (UI).
TS Gateway is a role service in the Terminal Services server role of Windows Server 2008. This role allows for authorized remote users to connect any Internet-connected device to resources on an internal corporate network or on a private network. These network resources can be terminal servers, terminal servers that are running remote application programs, or computers that have Remote Desktop enabled.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
947716 TS Gateway behavior for NPS policies in Windows Server 2008