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Note
Samba-3 has introduced a new ID mapping facility. One of the features of this facility is that it
allows greater flexibility in how user and group IDs are handled in respect to NT domain user and group
SIDs. One of the new facilities provides for explicitly ensuring that UNIX/Linux UID and GID values
will be consistent on the PDC, all BDCs, and all domain member servers. The parameter that controls this
is called
idmap backend
. Please refer to the man page for smb.conf for more information
regarding its behavior.
The use of the
idmap backend = ldap:ldap://master.quenya.org
option on a BDC only makes sense where ldapsam is used on a PDC. The purpose of an LDAP-based idmap backend is
also to allow a domain member (without its own passdb backend) to use winbindd to resolve Windows network users
and groups to common UID/GIDs. In other words, this option is generally intended for use on BDCs and on domain
member servers.
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