idmap_ldap - Samba's idmap_ldap Backend for Winbind
Please see following description for synopsis
System Administration tools IDMAP_LDAP(8)
NAME
idmap_ldap - Samba's idmap_ldap Backend for Winbind
DESCRIPTION
The idmap_ldap plugin provides a means for Winbind to store and
retrieve SID/uid/gid mapping tables in an LDAP directory service.
In contrast to read only backends like idmap_rid, it is an allocating
backend: This means that it needs to allocate new user and group IDs in
order to create new mappings.
IDMAP OPTIONS
ldap_base_dn = DN
Defines the directory base suffix to use for SID/uid/gid mapping
entries. If not defined, idmap_ldap will default to using the "ldap
idmap suffix" option from smb.conf.
ldap_user_dn = DN
Defines the user DN to be used for authentication. The secret for
authenticating this user should be stored with net idmap secret
(see net(8)). If absent, the ldap credentials from the ldap passdb
configuration are used, and if these are also absent, an anonymous
bind will be performed as last fallback.
ldap_url = ldap://server/
Specifies the LDAP server to use for SID/uid/gid map entries. If
not defined, idmap_ldap will assume that ldap://localhost/ should
be used.
range = low - high
Defines the available matching uid and gid range for which the
backend is authoritative.
EXAMPLES
The following example shows how an ldap directory is used as the
default idmap backend. It also configures the idmap range and base
directory suffix. The secret for the ldap_user_dn has to be set with
"net idmap secret '*' password".
[global]
idmap config * : backend = ldap
idmap config * : range = 1000000-1999999
idmap config * : ldap_url = ldap://localhost/
idmap config * : ldap_base_dn = ou=idmap,dc=example,dc=com
idmap config * : ldap_user_dn = cn=idmap_admin,dc=example,dc=com
This example shows how ldap can be used as a readonly backend while tdb
is the default backend used to store the mappings. It adds an explicit
configuration for some domain DOM1, that uses the ldap idmap backend.
Note that a range disjoint from the default range is used.
[global]
# "backend = tdb" is redundant here since it is the default
idmap config * : backend = tdb
idmap config * : range = 1000000-1999999
idmap config DOM1 : backend = ldap
idmap config DOM1 : range = 2000000-2999999
idmap config DOM1 : read only = yes
idmap config DOM1 : ldap_url = ldap://server/
idmap config DOM1 : ldap_base_dn = ou=idmap,dc=dom1,dc=example,dc=com
idmap config DOM1 : ldap_user_dn = cn=idmap_admin,dc=dom1,dc=example,dc=com
NOTE
In order to use authentication against ldap servers you may need to
provide a DN and a password. To avoid exposing the password in plain
text in the configuration file we store it into a security store. The
"net idmap " command is used to store a secret for the DN specified in
a specific idmap domain.
AUTHOR
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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | service/network/samba |
+---------------+-----------------------+
|Stability | Volatile |
+---------------+-----------------------+
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
https://download.samba.org/pub/samba/stable/samba-4.13.17.tar.gz.
Further information about this software can be found on the open source
community website at http://www.samba.org/.
Samba 4.13.17 06/28/2022 IDMAP_LDAP(8)