Babelfish supports GSSAPI, but it is not included with WiltonDB. In theory GSSAPI (MIT Kerberos) may be used with Windows Kerberos (Active Directory) when running on Windows as the Kerberos protocol is supposed to be compatible between MIT Kerberos and Windows Kerberos. But in practice PostgreSQL on Windows does not use GSSAPI to talk with Active Directory - uses SSPI (Windows Kerberos with NTLM fallback) instead, and SSPI part is not implemented in Babelfish for TDS protocol.

This issue is to explore the possibilities to implement SSPI for TDS connections in WiltonDB.