This message appears at login when a user's password is not identical to the user's keylogin(1) network password. When a system is running NIS+, the login program first performs UNIX authentication, and then attempts a keylogin(1) for secure RPC authentication.
To gain credentials for secure RPC, users can run keylogin(1) (after login) and type their secret key. To stop this message from appearing at time of login, users can run the chkey -p command and set their network password to be the same as their NIS+ password. If a user does not remember the network password, the system administrator should delete and re-create the user's credentials table entry so the user can establish a new network password with chkey(1).