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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<!--
pam_ldap.8.xml - docbook manual page for pam_ldap PAM module
Copyright (C) 2009, 2010, 2011, 2012, 2013 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
-->
<refentry id="pamldap8">
<refentryinfo>
<author>
<firstname>Arthur</firstname>
<surname>de Jong</surname>
</author>
</refentryinfo>
<refmeta>
<refentrytitle>pam_ldap</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="version">Version 0.8.13</refmiscinfo>
<refmiscinfo class="manual">System Manager's Manual</refmiscinfo>
<refmiscinfo class="date">May 2013</refmiscinfo>
</refmeta>
<refnamediv id="name">
<refname>pam_ldap</refname>
<refpurpose>PAM module for LDAP-based authentication</refpurpose>
</refnamediv>
<refsynopsisdiv id="synopsis">
<cmdsynopsis>
<command>pam_ldap.so</command>
<arg choice="opt"><replaceable>...</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1 id="description">
<title>Description</title>
<para>
This is a <acronym>PAM</acronym> module that uses an
<acronym>LDAP</acronym> server to verify user access rights and
credentials.
</para>
</refsect1>
<refsect1 id="options">
<title>Options</title>
<variablelist remap="TP">
<varlistentry id="use_first_pass">
<term>
<option>use_first_pass</option>
</term>
<listitem>
<para>
Specifies that the <acronym>PAM</acronym> module should use the first
password provided in the authentication stack and not prompt the user
for a password.
</para>
</listitem>
</varlistentry>
<varlistentry id="try_first_pass">
<term>
<option>try_first_pass</option>
</term>
<listitem>
<para>
Specifies that the <acronym>PAM</acronym> module should use the first
password provided in the authentication stack and if that fails prompt
the user for a password.
</para>
</listitem>
</varlistentry>
<varlistentry id="nullok">
<term>
<option>nullok</option>
</term>
<listitem>
<para>
Specifying this option allows users to log in with a blank password.
Normally logins without a password are denied.
</para>
</listitem>
</varlistentry>
<varlistentry id="ignore_unknown_user">
<term>
<option>ignore_unknown_user</option>
</term>
<listitem>
<para>
Specifies that the <acronym>PAM</acronym> module should return
PAM_IGNORE for users that are not present in the <acronym>LDAP</acronym>
directory.
This causes the <acronym>PAM</acronym> framework to ignore this module.
</para>
</listitem>
</varlistentry>
<varlistentry id="ignore_authinfo_unavail">
<term>
<option>ignore_authinfo_unavail</option>
</term>
<listitem>
<para>
Specifies that the <acronym>PAM</acronym> module should return
PAM_IGNORE if it cannot contact the <acronym>LDAP</acronym> server.
This causes the <acronym>PAM</acronym> framework to ignore this module.
</para>
</listitem>
</varlistentry>
<varlistentry id="no_warn">
<term>
<option>no_warn</option>
</term>
<listitem>
<para>
Specifies that warning messages should not be propagated to the
<acronym>PAM</acronym> application.
</para>
</listitem>
</varlistentry>
<varlistentry id="use_authtok">
<term>
<option>use_authtok</option>
</term>
<listitem>
<para>
This causes the <acronym>PAM</acronym> module to use the earlier
provided password when changing the password. The module will not
prompt the user for a new password (it is analogous to
<option>use_first_pass</option>).
</para>
</listitem>
</varlistentry>
<varlistentry id="debug">
<term>
<option>debug</option>
</term>
<listitem>
<para>
This option causes the <acronym>PAM</acronym> module to log debugging
information to
<citerefentry><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
</para>
</listitem>
</varlistentry>
<varlistentry id="minimum_uid">
<term>
<option>minimum_uid=<replaceable>UID</replaceable></option>
</term>
<listitem>
<para>
This option causes the <acronym>PAM</acronym> module to ignore the user
if the user id is lower than the specified value. This can be used to
bypass <acronym>LDAP</acronym> checks for system users
(e.g. by setting it to <literal>1000</literal>).
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="moduleservices">
<title>Module Services Provided</title>
<para>
All services are provided by this module but currently sessions changes
are not implemented in the nslcd daemon.
</para>
</refsect1>
<refsect1 id="files">
<title>Files</title>
<variablelist remap="TP">
<varlistentry>
<term><filename>/etc/pam.conf</filename></term>
<listitem><para>the main PAM configuration file</para></listitem>
</varlistentry>
<varlistentry>
<term><filename>/etc/nslcd.conf</filename></term>
<listitem><para>
The configuration file for the <command>nslcd</command> daemon
(see <citerefentry><refentrytitle>nslcd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>)
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="see_also">
<title>See Also</title>
<para>
<citerefentry><refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>nslcd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>nslcd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
<refsect1 id="author">
<title>Author</title>
<para>
This manual was written by Arthur de Jong <arthur@arthurdejong.org>.
</para>
</refsect1>
</refentry>
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