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PAM_DIAL_AUTH(5)					      PAM_DIAL_AUTH(5)

NAME
       pam_dial_auth - authentication management PAM module for dialups

SYNOPSIS
       pam_dial_auth.so.1

DESCRIPTION
       The  pam_dial_auth  module  implements  pam_sm_authenticate(3PAM) which
       authenticates the user according	 to  the  dialups(4)  and  d_passwd(4)
       files configuration.

       Authentication  service	modules	 must  implement both pam_sm_authenti‐
       cate() and pam_sm_setcred(). pam_sm_setcred()  in  this	module	always
       returns PAM_IGNORE.

       The value of the PAM_TTY item is checked against entries in dialups(4).
       If there is a match, the user's shell is compared  against  entries  in
       d_passwd(4).  If	 there is a matching entry, the user is prompted for a
       password which is validated against the entry found.

       The following option may be passed in to this service module:

       debug
		syslog(3C) debugging information at LOG_DEBUG level.

ERRORS
       If dialups(4) is not present, PAM_IGNORE is returned.  Upon  successful
       completion  of pam_sm_authenticate(), PAM_SUCCESS is returned. The fol‐
       lowing error codes are returned upon error:

       PAM_AUTH_ERR
			   Authentication failure.

       PAM_SERVICE_ERR
			   Error in the calling service, PAM_TTY is not set.

       PAM_SYSTEM_ERR
			   System error (d_passwd(4) is not present).

       PAM_USER_UNKNOWN
			   No account is present for user.

ATTRIBUTES
       See attributes(5) for a description of the following attributes:

       ┌───────────────┬─────────────────────────┐
       │ATTRIBUTE TYPE │     ATTRIBUTE VALUE	 │
       ├───────────────┼─────────────────────────┤
       │MT Level       │ MT-Safe with exceptions │
       └───────────────┴─────────────────────────┘

SEE ALSO
       pam(3PAM),      pam_authenticate(3PAM),	    pam_sm_authenticate(3PAM),
       d_passwd(4),   dialups(4),  libpam(3LIB),  pam.conf(4),	attributes(5),
       pam_authtok_check(5),	 pam_authtok_get(5),	 pam_authtok_store(5),
       pam_dhkeys(5),	      pam_passwd_auth(5),	  pam_unix_account(5),
       pam_unix_auth(5), pam_unix_session(5)

NOTES
       The interfaces in libpam(3LIB) are MT-Safe only if each	thread	within
       the multi-threaded application uses its own PAM handle.

       The pam_unix(5) module is no longer supported. Similar functionality is
       provided	  by   pam_authtok_check(5),   pam_authtok_get(5),   pam_auth‐
       tok_store(5),  pam_dhkeys(5),  pam_passwd_auth(5), pam_unix_account(5),
       pam_unix_auth(5), and pam_unix_session(5).

				  Sep 9, 2004		      PAM_DIAL_AUTH(5)

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