You can use SNC (Secure Network Communication) for the SAP Connection. In the Connection Manager click on Additions. In the section SNC select the option SNC enabled and fill the required fields.
The property Quality Of Protection sets the desired security level. For detail information go to:
More information about the SSO configuration you will find here: http://help.sap.com/saphelp_nw73/helpdata/en/44/0e2e0cc7330d19e10000000a114a6b/frameset.htm
Download the DLLs
You must also have the relevant DLLs from SAP. These DLLs are different for 32-bit and 64-bit platforms and are available with SNOTE* 352295. You can download the DLLs from https://websmp230.sap-ag.de/sap/support/notes/352295
This link has an ‘Attachments’ option from where you can download the package. The names of the DLLs are:
For 32-bit: gsskrb5.dll For 64-bit x86: gx64krb5.dll
To configure SSO with SNC on your SAP System refer to or Knowledge Base article: http://my.theobald-software.com/index.php?/Knowledgebase/Article/View/87/3/snc-connection-with-sso