Kerberos-password failure message?

[Surendra Babu A]

Hi Kerberos Team,

This regarding Kerberos Authentication issue. If we enter the wrong password at the client side and connect with the KDC, KDc returns PREAUTH_REQUIRED/PREAUTH_FAILURE error. Right?

In waht case, KDC gives password failure error if we neter wrong password at the Kerberos client side? How to disctinguish the Passowrd failure error and pre-auth error? Any thoughs on the same will be appreciated very well.

Thank you,
-Surendra