IDMAP_LDAP(8)						    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.

Samba 4.0							    06/17/2014							     IDMAP_LDAP(8)