Microsoft DirectAccess Connectivity Assistant (DCA) 2.0 Beta can be used by computers running Windows 7 when connecting to internal corporate networks with DirectAccess in Windows 8 Server Beta. It improves the DirectAccess connection experience, supports one-time password (OTP) authentication for DirectAccess users and helps organizations reduce the cost of supporting DirectAccess users.

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http://www.microsoft.com/download/en/details.aspx?id=29039