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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
+<refentry id="idmap_ad.8">
+
+<refmeta>
+ <refentrytitle>idmap_ad</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="source">Samba</refmiscinfo>
+ <refmiscinfo class="manual">System Administration tools</refmiscinfo>
+ <refmiscinfo class="version">3.6</refmiscinfo>
+</refmeta>
+
+
+<refnamediv>
+ <refname>idmap_ad</refname>
+ <refpurpose>Samba's idmap_ad Backend for Winbind</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+ <title>DESCRIPTION</title>
+ <para>The idmap_ad plugin provides a way for Winbind to read
+ id mappings from an AD server that uses RFC2307/SFU schema
+ extensions. This module implements only the &quot;idmap&quot;
+ API, and is READONLY. Mappings must be provided in advance
+ by the administrator by adding the posixAccount/posixGroup
+ classes and relative attribute/value pairs to the user and
+ group objects in the AD.</para>
+
+ <para>
+ Note that the idmap_ad module has changed considerably since
+ Samba versions 3.0 and 3.2.
+ Currently, the <parameter>ad</parameter> backend
+ does not work as the the default idmap backend, but one has
+ to configure it separately for each domain for which one wants
+ to use it, using disjoint ranges. One usually needs to configure
+ a writeable default idmap range, using for example the
+ <parameter>tdb</parameter> or <parameter>ldap</parameter>
+ backend, in order to be able to map the BUILTIN sids and
+ possibly other trusted domains. The writeable default config
+ is also needed in order to be able to create group mappings.
+ This catch-all default idmap configuration should have a range
+ that is disjoint from any explicitly configured domain with
+ idmap backend <parameter>ad</parameter>. See the example below.
+ </para>
+</refsynopsisdiv>
+
+<refsect1>
+ <title>IDMAP OPTIONS</title>
+
+ <variablelist>
+ <varlistentry>
+ <term>range = low - high</term>
+ <listitem><para>
+ Defines the available matching UID and GID range for which the
+ backend is authoritative. Note that the range acts as a filter.
+ If specified any UID or GID stored in AD that fall outside the
+ range is ignored and the corresponding map is discarded.
+ It is intended as a way to avoid accidental UID/GID overlaps
+ between local and remotely defined IDs.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>schema_mode = &lt;rfc2307 | sfu | sfu20&gt;</term>
+ <listitem><para>
+ Defines the schema that idmap_ad should use when querying
+ Active Directory regarding user and group information.
+ This can be either the RFC2307 schema support included
+ in Windows 2003 R2 or the Service for Unix (SFU) schema.
+ For SFU 3.0 or 3.5 please choose "sfu", for SFU 2.0
+ please choose "sfu20".
+
+ Please note that primary group membership is currently always calculated
+ via the "primaryGroupID" LDAP attribute.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+</refsect1>
+
+<refsect1>
+ <title>EXAMPLES</title>
+ <para>
+ The following example shows how to retrieve idmappings from our principal and
+ trusted AD domains. If trusted domains are present id conflicts must be
+ resolved beforehand, there is no
+ guarantee on the order conflicting mappings would be resolved at this point.
+
+ This example also shows how to leave a small non conflicting range for local
+ id allocation that may be used in internal backends like BUILTIN.
+ </para>
+
+ <programlisting>
+ [global]
+ workgroup = CORP
+
+ idmap config * : backend = tdb
+ idmap config * : range = 1000000-1999999
+
+ idmap config CORP : backend = ad
+ idmap config CORP : range = 1000-999999
+ </programlisting>
+</refsect1>
+
+<refsect1>
+ <title>AUTHOR</title>
+
+ <para>
+ The original Samba software and related utilities
+ were created by Andrew Tridgell. Samba is now developed
+ by the Samba Team as an Open Source project similar
+ to the way the Linux kernel is developed.
+ </para>
+</refsect1>
+
+</refentry>