NIS+ - Changing a user's forgotten password as root.

From: LOEWENTHAL Simon (sloewenthal_at_gemini.edu)
Date: 04/20/04

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    To: "Sun Mangers" <sunmanagers@sunmanagers.org>
Date: Tue, 20 Apr 2004 11:17:46 -0400

    Hi there,

    Does anyone know the correct and sure way of changing a normal NIS+ user's
    password, when they do not know their original password.
    The problem with the procedure below is this:

    [root@RMS]nis$ nispasswd Guest
    New password:
    Re-enter new password:
    NIS+ password information changed for Guest

    The NIS+ credential information for GuestI will not be changed.
    User GuestI must do the following to update his/her
    credential information:
    Use NEW passwd for login and OLD passwd for keylogin. ---- How? They have
    forgotten their password! ---
    Use "chkey -p" to reencrypt the credentials with the
    new login passwd.
    The user must keylogin explicitly after their next login.

    [root@aguila]nis$ telnet RMS
    Trying 172.16.5.10...
    Connected to RMS.
    Escape character is '^]'.
    login: Guest
    Password:
    Login incorrect --- Well that failed, even though it tells me to login
    with the NEW passwd for login!!

    I have tried using the passwd command on the Root Master but as you can see
    it falls down because I don't know the user's old password:

    passwd GuestI
    Enter login(NIS+) password:

    I thought that perhaps I should do a keylogin -r on the RMS when I logged
    in, but I don't know exactly what that does so I haven't. The only way I
    know around this involves deleting and recreating the user's credentials.

    I really need a sure-fire way of changing passwords as its daft to use a
    system that stops you or makes it extremely difficult for the admin account
    to reset a normal user's password. I must be missing something?

    Regards,
    Simon. 

    ---
Simon Loewenthal
Gemini Observatory
Information Systems Group
Video 139.229.33.88
Voice +56 51 205610
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