pam_ksu man page on FreeBSD

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

     pam_ksu — Kerberos 5 SU PAM module

     [service-name] module-type control-flag pam_ksu [options]

     The Kerberos 5 SU authentication service module for PAM, pam_ksu for only
     one PAM category: authentication.	In terms of the module-type parameter,
     this is the “auth” feature.  The module is specifically designed to be
     used with the su(1) utility.

   Kerberos 5 SU Authentication Module
     The Kerberos 5 SU authentication component provides functions to verify
     the identity of a user (pam_sm_authenticate()), and determine whether or
     not the user is authorized to obtain the privileges of the target
     account.  If the target account is “root”, then the Kerberos 5 principal
     used for authentication and authorization will be the “root” instance of
     the current user, e.g. “user/root@REAL.M”.	 Otherwise, the principal will
     simply be the current user's default principal, e.g. “user@REAL.M”.

     The user is prompted for a password if necessary.	Authorization is per‐
     formed by comparing the Kerberos 5 principal with those listed in the
     .k5login file in the target account's home directory (e.g. /root/.k5login
     for root).

     The following options may be passed to the authentication module:

     debug	     syslog(3) debugging information at LOG_DEBUG level.

     use_first_pass  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.

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

     su(1), syslog(3), pam.conf(5), pam(8)

BSD				 May 15, 2002				   BSD

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