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IDMAP_LDAP(8)                                                                                  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. The module implements both the "idmap" and "idmap alloc" APIs.

IDMAP OPTIONS
       ldap_base_dn = DN
          Defines the directory base suffix to use when searching 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. If absent an anonymous bind will be performed.

       ldap_url = ldap://server/
          Specifies the LDAP server to use when searching for  existing  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. Note that
          the range commonly matches the allocation range due to the fact that the same backend  will  store
          and retrieve SID/uid/gid mapping entries. If the parameter is absent, Winbind fail over to use the
          "idmap uid" and "idmap gid" options from smb.conf.

IDMAP ALLOC OPTIONS
       ldap_base_dn = DN
          Defines the directory base suffix under which new SID/uid/gid mapping entries should be stored. 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. If absent an anonymous bind will be performed.

       ldap_url = ldap://server/
          Specifies the LDAP server to which modify/add/delete requests should  be  sent.  If  not  defined,
          idmap_ldap will assume that ldap://localhost/ should be used.

       range = low - high
          Defines  the  available  matching uid and gid range from which winbindd can allocate for users and
          groups. If the parameter is absent, Winbind fail over to use  the  "idmap  uid"  and  "idmap  gid"
          options from smb.conf.

EXAMPLES
       The  follow  sets  of  a  LDAP  configuration which uses a slave server running on localhost for fast
       fetching SID/gid/uid mappings, it implies correct configuration of referrals. The idmap alloc backend
       is  pointed  directly  to the master to skip the referral (and consequent reconnection to the master)
       that the slave would return as allocation requires writing on the master.


            [global]
                idmap domains = ALLDOMAINS
                idmap config ALLDOMAINS:default      = yes
                idmap config ALLDOMAINS:backend      = ldap
                idmap config ALLDOMAINS:ldap_base_dn = ou=idmap,dc=example,dc=com
                idmap config ALLDOMAINS:ldap_url     = ldap://localhost/
                idmap config ALLDOMAINS:range        = 10000 - 50000

                idmap alloc backend = ldap
                idmap alloc config:ldap_base_dn = ou=idmap,dc=example,dc=com
                idmap alloc config:ldap_url     = ldap://master.example.com/
                idmap alloc config:range        = 10000 - 50000


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  devel-oped. developed.
       oped.




                                                                                               IDMAP_LDAP(8)

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