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<samba:parameter name="passdb backend"
context="G"
advanced="1" developer="1"
xmlns:samba="http://samba.org/common">
<listitem>
<para>This option allows the administrator to chose which backends
to retrieve and store passwords with. This allows (for example) both
smbpasswd and tdbsam to be used without a recompile. Multiple
backends can be specified, separated by spaces. The backends will be
searched in the order they are specified. New users are always added
to the first backend specified. </para>
<para>This parameter is in two parts, the backend's name, and a 'location'
string that has meaning only to that particular backed. These are separated
by a : character.</para>
<para>Available backends can include:
<itemizedlist>
<listitem>
<para><command moreinfo="none">smbpasswd</command> - The default smbpasswd
backend. Takes a path to the smbpasswd file as an optional argument.
</para>
</listitem>
<listitem>
<para><command moreinfo="none">tdbsam</command> - The TDB based password storage
backend. Takes a path to the TDB as an optional argument (defaults to passdb.tdb
in the <link linkend="PRIVATEDIR">
<parameter moreinfo="none">private dir</parameter></link> directory.</para>
</listitem>
<listitem>
<para><command moreinfo="none">ldapsam</command> - The LDAP based passdb
backend. Takes an LDAP URL as an optional argument (defaults to
<command moreinfo="none">ldap://localhost</command>)</para>
<para>LDAP connections should be secured where possible. This may be done using either
Start-TLS (see <link linkend="LDAPSSL"><parameter moreinfo="none">ldap ssl</parameter></link>) or by
specifying <parameter moreinfo="none">ldaps://</parameter> in
the URL argument. </para>
</listitem>
<listitem>
<para><command moreinfo="none">nisplussam</command> -
The NIS+ based passdb backend. Takes name NIS domain as
an optional argument. Only works with sun NIS+ servers.
</para>
</listitem>
<listitem>
<para><command moreinfo="none">mysql</command> -
The MySQL based passdb backend. Takes an identifier as
argument. Read the Samba HOWTO Collection for configuration
details.
</para></listitem>
<listitem>
<para><command moreinfo="none">guest</command> -
Very simple backend that only provides one user: the guest user.
Only maps the NT guest user to the <parameter>guest account</parameter>.
Required in pretty much all situations.
</para></listitem>
</itemizedlist>
</para>
<para>Default: <command moreinfo="none">passdb backend = smbpasswd guest</command></para>
<para>Example: <command moreinfo="none">passdb backend = tdbsam:/etc/samba/private/passdb.tdb smbpasswd:/etc/samba/smbpasswd guest</command></para>
<para>Example: <command moreinfo="none">passdb backend = ldapsam:ldaps://ldap.example.com guest</command></para>
<para>Example: <command moreinfo="none">passdb backend = mysql:my_plugin_args tdbsam:/etc/samba/private/passdb.tdb guest</command></para>
</listitem>
</samba:parameter>
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