Adaptive Server 12.5.4 expands Kerberos capabilities
New option to specify a Kerberos principal name different from the Adaptive Server name.
Expanded platform support for Kerberos.
You can now use the sp_modifylogin and the option authenticate with to require Kerberos authentication for an individual login.
sybmapname is a customizable utility to convert external user principal names to the name space of Adaptive Server logins.