| 1 | <?xml version="1.0" encoding="iso-8859-1"?>
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| 2 | <!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
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| 3 | <refentry id="idmap_ad.8">
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| 4 |
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| 5 | <refmeta>
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| 6 | <refentrytitle>idmap_ad</refentrytitle>
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| 7 | <manvolnum>8</manvolnum>
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| 8 | <refmiscinfo class="source">Samba</refmiscinfo>
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| 9 | <refmiscinfo class="manual">System Administration tools</refmiscinfo>
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| 10 | <refmiscinfo class="version">4.4</refmiscinfo>
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| 11 | </refmeta>
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| 12 |
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| 13 |
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| 14 | <refnamediv>
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| 15 | <refname>idmap_ad</refname>
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| 16 | <refpurpose>Samba's idmap_ad Backend for Winbind</refpurpose>
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| 17 | </refnamediv>
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| 18 |
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| 19 | <refsynopsisdiv>
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| 20 | <title>DESCRIPTION</title>
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| 21 | <para>The idmap_ad plugin provides a way for Winbind to read
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| 22 | id mappings from an AD server that uses RFC2307/SFU schema
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| 23 | extensions. This module implements only the "idmap"
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| 24 | API, and is READONLY. Mappings must be provided in advance
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| 25 | by the administrator by adding the uidNumber attributes for
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| 26 | users and gidNumber attributes for groups in the AD. Winbind
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| 27 | will only map users that have a uidNumber and whose primary
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| 28 | group have a gidNumber attribute set. It is however
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| 29 | recommended that all groups in use have gidNumber attributes
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| 30 | assigned, otherwise they are not working.</para>
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| 31 |
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| 32 | <para>
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| 33 | Currently, the <parameter>ad</parameter> backend
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| 34 | does not work as the default idmap backend, but one has
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| 35 | to configure it separately for each domain for which one wants
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| 36 | to use it, using disjoint ranges. One usually needs to configure
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| 37 | a writeable default idmap range, using for example the
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| 38 | <parameter>tdb</parameter> or <parameter>ldap</parameter>
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| 39 | backend, in order to be able to map the BUILTIN sids and
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| 40 | possibly other trusted domains. The writeable default config
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| 41 | is also needed in order to be able to create group mappings.
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| 42 | This catch-all default idmap configuration should have a range
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| 43 | that is disjoint from any explicitly configured domain with
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| 44 | idmap backend <parameter>ad</parameter>. See the example below.
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| 45 | </para>
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| 46 | </refsynopsisdiv>
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| 47 |
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| 48 | <refsect1>
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| 49 | <title>IDMAP OPTIONS</title>
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| 50 |
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| 51 | <variablelist>
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| 52 | <varlistentry>
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| 53 | <term>range = low - high</term>
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| 54 | <listitem><para>
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| 55 | Defines the available matching UID and GID range for which the
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| 56 | backend is authoritative. Note that the range acts as a filter.
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| 57 | If specified any UID or GID stored in AD that fall outside the
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| 58 | range is ignored and the corresponding map is discarded.
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| 59 | It is intended as a way to avoid accidental UID/GID overlaps
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| 60 | between local and remotely defined IDs.
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| 61 | </para></listitem>
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| 62 | </varlistentry>
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| 63 | <varlistentry>
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| 64 | <term>schema_mode = <rfc2307 | sfu | sfu20></term>
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| 65 | <listitem><para>
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| 66 | Defines the schema that idmap_ad should use when querying
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| 67 | Active Directory regarding user and group information.
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| 68 | This can be either the RFC2307 schema support included
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| 69 | in Windows 2003 R2 or the Service for Unix (SFU) schema.
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| 70 | For SFU 3.0 or 3.5 please choose "sfu", for SFU 2.0
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| 71 | please choose "sfu20".
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| 72 |
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| 73 | Please note that primary group membership is currently always calculated
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| 74 | via the "primaryGroupID" LDAP attribute.
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| 75 | </para></listitem>
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| 76 | </varlistentry>
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| 77 | </variablelist>
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| 78 | </refsect1>
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| 79 |
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| 80 | <refsect1>
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| 81 | <title>EXAMPLES</title>
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| 82 | <para>
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| 83 | The following example shows how to retrieve idmappings from our principal and
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| 84 | trusted AD domains. If trusted domains are present id conflicts must be
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| 85 | resolved beforehand, there is no
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| 86 | guarantee on the order conflicting mappings would be resolved at this point.
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| 87 |
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| 88 | This example also shows how to leave a small non conflicting range for local
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| 89 | id allocation that may be used in internal backends like BUILTIN.
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| 90 | </para>
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| 91 |
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| 92 | <programlisting>
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| 93 | [global]
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| 94 | workgroup = CORP
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| 95 |
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| 96 | idmap config * : backend = tdb
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| 97 | idmap config * : range = 1000000-1999999
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| 98 |
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| 99 | idmap config CORP : backend = ad
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| 100 | idmap config CORP : range = 1000-999999
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| 101 | </programlisting>
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| 102 | </refsect1>
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| 103 |
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| 104 | <refsect1>
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| 105 | <title>AUTHOR</title>
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| 106 |
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| 107 | <para>
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| 108 | The original Samba software and related utilities
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| 109 | were created by Andrew Tridgell. Samba is now developed
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| 110 | by the Samba Team as an Open Source project similar
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| 111 | to the way the Linux kernel is developed.
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| 112 | </para>
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| 113 | </refsect1>
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| 114 |
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| 115 | </refentry>
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