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NetBSD 6.1.5 - man page for pam (netbsd section 8)

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

NAME
     pam -- Pluggable Authentication Modules framework

DESCRIPTION
     The Pluggable Authentication Modules (PAM) framework is a system of libraries that perform
     authentication tasks for services and applications.  Applications that use the PAM API may
     have their authentication behavior configured by the system administrator though the use of
     the service's PAM configuration file.

     PAM modules provide four classes of functionality:

     account   Account verification services such as password expiration and access control.

     auth      Authentication services.  This usually takes the form of a challenge-response con-
	       versation.  However, PAM can also support, with appropriate hardware support, bio-
	       metric devices, smart-cards, and so forth.

     password  Password (or, more generally, authentication token) change and update services.

     session   Session management services.  These are tasks that are performed before access to
	       a service is granted and after access to a service is withdrawn.  These may
	       include updating activity logs or setting up and tearing down credential forward-
	       ing agents.

     A primary feature of PAM is the notion of ``stacking'' different modules together to form a
     processing chain for the task.  This allows fairly precise control over how a particular
     authentication task is performed, and under what conditions.  PAM module configurations may
     also inherit stacks from other module configurations, providing some degree of centralized
     administration.

SEE ALSO
     login(1), passwd(1), su(1), pam(3), pam.conf(5), pam_chroot(8), pam_deny(8), pam_echo(8),
     pam_exec(8), pam_ftpusers(8), pam_group(8), pam_guest(8), pam_krb5(8), pam_ksu(8),
     pam_lastlog(8), pam_login_access(8), pam_nologin(8), pam_permit(8), pam_radius(8),
     pam_rhosts(8), pam_rootok(8), pam_securetty(8), pam_self(8), pam_skey(8), pam_ssh(8),
     pam_unix(8)

HISTORY
     The Pluggable Authentication Module framework was originally developed by SunSoft, described
     in DCE/OSF-RFC 86.0, and first deployed in Solaris 2.6.  It was later incorporated into the
     X/Open Single Sign-On Service (XSSO) Pluggable Authentication Modules specifiation.

     The Pluggable Authentication Module framework first appeared in NetBSD 3.0.

BSD					February 28, 2005				      BSD


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