Hi Waseem!
Kerberos authentication on SAP NetWeaver Application Server (SAP NetWeaver AS) ABAP with a web client requires Simple and Protected GSS API Negotiation Mechanism (SPNego) for SAP NetWeaver AS ABAP.
This is possible with SAP NW SSO 2.0 and the new Secure Login Library. Supported NetWeaver Releases are 7.40, 7.31. Requried Kernel Update 7.21 EXT
More Information see SAP Note 1798979 - SPNego ABAP: Downport.
Regards,
Carsten
