PAMUNIX(8) BSD System Manager's Manual PAMUNIX(8)

NAME
     ppaammuunniixx - UNIX PAM module

SYNOPSIS
     [service-name] module-type control-flag pamunix [options]

DESCRIPTION
     The UNIX authentication service module for PAM, ppaammuunniixx provides func-
     tionality for two PAM categories: authentication and account management.
     In terms of the module-type parameter, they are the ``auth'' and
     ``account'' features.  It also provides a null function for session man-
     agement.

   UNIX AAuutthheennttiiccaattiioonn MMoodduullee
     The UNIX authentication component provides functions to verify the iden-
     tity of a user (ppaammssmmaauutthheennttiiccaattee()), which obtains the relevant
     passwd(5) entry.  It prompts the user for a password and verifies that
     this is correct with crypt(3).

     The following options may be passed to the authentication module:

     ddeebbuugg           syslog(3) debugging information at LOGDEBUG level.

     uusseeffiirrssttppaassss  If the authentication module is not the first in the
                     stack, and a previous module obtained the user's pass-
                     word, that password is used to authenticate the user.  If
                     this fails, the authentication module returns failure
                     without prompting the user for a password.  This option
                     has no effect if the authentication module is the first
                     in the stack, or if no previous modules obtained the
                     user's password.

     ttrryyffiirrssttppaassss  This option is similar to the uusseeffiirrssttppaassss option,
                     except that if the previously obtained password fails,
                     the user is prompted for another password.

     aauutthhaasssseellff    This option will require the user to authenticate them-
                     self as the user given by getlogin(2), not as the account
                     they are attempting to access.  This is primarily for
                     services like su(1), where the user's ability to retype
                     their own password might be deemed sufficient.

     nnuullllookk          If the password database has no password for the entity
                     being authenticated, then this option will forgo password
                     prompting, and silently allow authentication to succeed.

   UNIX AAccccoouunntt MMaannaaggeemmeenntt MMoodduullee
     The UNIX account management component provides a function to perform
     account management, ppaammssmmaaccccttmmggmmtt().  The function verifies that the
     authenticated user is allowed to login to the local user account by
     checking the password expiry date.

     The following options may be passed to the management module:

     ddeebbuugg           syslog(3) debugging information at LOGDEBUG level.

   UNIX PPaasssswwoorrdd MMaannaaggeemmeenntt MMoodduullee
     The UNIX password management component provides a function to perform
     account management, ppaammssmmcchhaauutthhttookk().  The function changes the user's
     password.

     The following options may be passed to the password module:

     ddeebbuugg           syslog(3) debugging information at LOGDEBUG level.

     nnoowwaarrnn         suppress warning messages to the user.  These messages
                     include reasons why the user's authentication attempt was
                     declined.

     llooccaallppaassss      forces the password module to change a local password in
                     favour of a NIS one.

     nniissppaassss        forces the password module to change a NIS password in
                     favour of a local one.

FILES     /etc/master.passwd  default UNIX password database.

SEE ALSO
     passwd(1), getlogin(2), crypt(3), syslog(3), pam.conf(5), passwd(5),
     pam(8)

BSD                              July 7, 2001                              BSD