1IDMAP_LDAP(8)             System Administration tools            IDMAP_LDAP(8)
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NAME

6       idmap_ldap - Samba's idmap_ldap Backend for Winbind
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DESCRIPTION

9       The idmap_ldap plugin provides a means for Winbind to store and
10       retrieve SID/uid/gid mapping tables in an LDAP directory service.
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12       In contrast to read only backends like idmap_rid, it is an allocating
13       backend: This means that it needs to allocate new user and group IDs in
14       order to create new mappings.
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IDMAP OPTIONS

17       ldap_base_dn = DN
18           Defines the directory base suffix to use for SID/uid/gid mapping
19           entries. If not defined, idmap_ldap will default to using the "ldap
20           idmap suffix" option from smb.conf.
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22       ldap_user_dn = DN
23           Defines the user DN to be used for authentication. The secret for
24           authenticating this user should be stored with net idmap secret
25           (see net(8)). If absent, the ldap credentials from the ldap passdb
26           configuration are used, and if these are also absent, an anonymous
27           bind will be performed as last fallback.
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29       ldap_url = ldap://server/
30           Specifies the LDAP server to use for SID/uid/gid map entries. If
31           not defined, idmap_ldap will assume that ldap://localhost/ should
32           be used.
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34       range = low - high
35           Defines the available matching uid and gid range for which the
36           backend is authoritative.
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EXAMPLES

39       The following example shows how an ldap directory is used as the
40       default idmap backend. It also configures the idmap range and base
41       directory suffix. The secret for the ldap_user_dn has to be set with
42       "net idmap secret '*' password".
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44                [global]
45                idmap config * : backend      = ldap
46                idmap config * : range        = 1000000-1999999
47                idmap config * : ldap_url     = ldap://localhost/
48                idmap config * : ldap_base_dn = ou=idmap,dc=example,dc=com
49                idmap config * : ldap_user_dn = cn=idmap_admin,dc=example,dc=com
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52       This example shows how ldap can be used as a readonly backend while tdb
53       is the default backend used to store the mappings. It adds an explicit
54       configuration for some domain DOM1, that uses the ldap idmap backend.
55       Note that a range disjoint from the default range is used.
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57                [global]
58                # "backend = tdb" is redundant here since it is the default
59                idmap config * : backend = tdb
60                idmap config * : range = 1000000-1999999
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62                idmap config DOM1 : backend = ldap
63                idmap config DOM1 : range = 2000000-2999999
64                idmap config DOM1 : read only = yes
65                idmap config DOM1 : ldap_url = ldap://server/
66                idmap config DOM1 : ldap_base_dn = ou=idmap,dc=dom1,dc=example,dc=com
67                idmap config DOM1 : ldap_user_dn = cn=idmap_admin,dc=dom1,dc=example,dc=com
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NOTE

71       In order to use authentication against ldap servers you may need to
72       provide a DN and a password. To avoid exposing the password in plain
73       text in the configuration file we store it into a security store. The
74       "net idmap " command is used to store a secret for the DN specified in
75       a specific idmap domain.
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AUTHOR

78       The original Samba software and related utilities were created by
79       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
80       Source project similar to the way the Linux kernel is developed.
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84Samba 4.14.5                      06/01/2021                     IDMAP_LDAP(8)
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