The SAP Adapter supports SAP SNC Authentication. For this, you need to have the SNC libraries present. You can download them by following the steps outlined below:
The SAP Note contains information on SNC. At the bottom of the page, links are present for downloading the 32 and/or 64 bit versions of the SNC Libraries.
FYI - Information on configuring the SAP server for SNC can be obtained here: https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/ac81c690-0201-0010-c4b4-c72618f3590d
FYI - Information on configuring the SAPBinding for SNC can be obtained here: http://msdn.microsoft.com/en-us/library/cc185541.aspx