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unix2_chkpwd(8) [debian man page]

UNIX2_CHKPWD(8) 						 Linux-PAM Manual						   UNIX2_CHKPWD(8)

NAME
unix2_chkpwd - helper binary that verifies the password of the current user SYNOPSIS
/sbin/unix2_chkpwd servicename username DESCRIPTION
unix2_chkpwd is a helper program for applications that verifies the password of the current user. It is not intended to be run directly from the command line and logs a security violation if done so. It is typically installed setuid root or setgid shadow and called by applications, which only wishes to do an user authentication and noth- ing more. OPTIONS
unix2_pwdchk requires the following arguments: pam_service The name of the service using unix2_chkpwd. This is required to be one of the services in /etc/pam.d username The name of the user whose password you want to verify. INPUTS
unix2_pwdchk expects the password via stdin. RETURN CODES
unix2_chkpwd has the following return codes: 1 unix2_chkpwd was inappropriately called from the command line or the password is incorrect. 0 The password is correct. HISTORY
Written by Olaf Kirch loosely based on unix_chkpwd by Andrew Morgan SEE ALSO
pam(8) AUTHOR
Emily Ratliff. Linux-PAM 0.76 2003-03-21 UNIX2_CHKPWD(8)

Check Out this Related Man Page

PAM_WARN(8)							 Linux-PAM Manual						       PAM_WARN(8)

NAME
pam_warn - PAM module which logs all PAM items if called SYNOPSIS
pam_warn.so DESCRIPTION
pam_warn is a PAM module that logs the service, terminal, user, remote user and remote host to syslog(3). The items are not probed for, but instead obtained from the standard PAM items. The module always returns PAM_IGNORE, indicating that it does not want to affect the authentication process. OPTIONS
This module does not recognise any options. MODULE TYPES PROVIDED
The auth, account, password and session module types are provided. RETURN VALUES
PAM_IGNORE This module always returns PAM_IGNORE. EXAMPLES
#%PAM-1.0 # # If we don't have config entries for a service, the # OTHER entries are used. To be secure, warn and deny # access to everything. other auth required pam_warn.so other auth required pam_deny.so other account required pam_warn.so other account required pam_deny.so other password required pam_warn.so other password required pam_deny.so other session required pam_warn.so other session required pam_deny.so SEE ALSO
pam.conf(5), pam.d(5), pam(8) AUTHOR
pam_warn was written by Andrew G. Morgan <morgan@kernel.org>. Linux-PAM Manual 04/01/2010 PAM_WARN(8)

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