path: root/src/man/sssd-ldap.5.xml

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<!DOCTYPE reference PUBLIC "-//OASIS//DTD DocBook V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<reference>
<title>SSSD Manual pages</title>
<refentry>
    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/upstream.xml" />

    <refmeta>
        <refentrytitle>sssd-ldap</refentrytitle>
        <manvolnum>5</manvolnum>
        <refmiscinfo class="manual">File Formats and Conventions</refmiscinfo>
    </refmeta>

    <refnamediv id='name'>
        <refname>sssd-ldap</refname>
        <refpurpose>the configuration file for SSSD</refpurpose>
    </refnamediv>

    <refsect1 id='description'>
        <title>DESCRIPTION</title>
        <para>
            This manual page describes the configuration of LDAP
            domains for
            <citerefentry>
                <refentrytitle>sssd</refentrytitle>
                <manvolnum>8</manvolnum>
            </citerefentry>.
            Refer to the <quote>FILE FORMAT</quote> section of the
            <citerefentry>
                <refentrytitle>sssd.conf</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> manual page for detailed syntax information.</para>
        <para>
            You can configure SSSD to use more than one LDAP domain.
        </para>
        <para>
            If you want to authenticate against an LDAP server then TLS/SSL is
            required. <command>sssd</command> <emphasis>does not</emphasis>
            support authentication over an unencrypted channel. If the LDAP
            server is used only as an identify provider, an encrypted channel
            is not needed.
        </para>
    </refsect1>

    <refsect1 id='file-format'>
        <title>CONFIGURATION OPTIONS</title>
        <para>
            All of the common configuration options that apply to SSSD domains also apply
            to LDAP domains. Refer to the <quote>DOMAIN SECTIONS</quote> section of the
            <citerefentry>
                <refentrytitle>sssd.conf</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> manual page for full details.

            <variablelist>
                <varlistentry>
                    <term>ldap_uri (string)</term>
                    <listitem>
                        <para>
                            Specifies the list of URIs of the LDAP servers to which
                            SSSD should connect in the order of preference. Refer to the
                            <quote>FAILOVER</quote> section for more information on failover and server redundancy.
                            If not specified, service discovery is enabled. For more information, refer
                            to the <quote>SERVICE DISCOVERY</quote> section.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_search_base (string)</term>
                    <listitem>
                        <para>
                            The default base DN to use for
                            performing LDAP user operations.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_schema (string)</term>
                    <listitem>
                        <para>
                            Specifies the Schema Type in use on the target LDAP
                            server.
                            Depending on the selected schema, the default
                            attribute names retrieved from the servers may vary.
                            The way that some attributes are handled may also differ.

                            Two schema types are currently supported:
                            rfc2307
                            rfc2307bis

                            The main difference between these two schema types is
                            how group memberships are recorded in the server.
                            With rfc2307, group members are listed by name in the
                            <emphasis>memberUid</emphasis> attribute.
                            With rfc2307bis, group members are listed by DN and
                            stored in the <emphasis>member</emphasis> attribute.

                        </para>
                        <para>
                            Default: rfc2307
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_default_bind_dn (string)</term>
                    <listitem>
                        <para>
                            The default bind DN to use for
                            performing LDAP operations.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_default_authtok_type (string)</term>
                    <listitem>
                        <para>
                            The type of the authentication token of the
                            default bind DN. The only currently supported value is "password".
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_default_authtok (string)</term>
                    <listitem>
                        <para>
                            The authentication token of the default bind DN.
                            Only clear text passwords are currently supported.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_search_base (string)</term>
                    <listitem>
                        <para>
                            An optional base DN to restrict user searches
                            to a specific subtree.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>ldap_search_base</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_object_class (string)</term>
                    <listitem>
                        <para>
                            The object class of a user entry in LDAP.
                        </para>
                        <para>
                            Default: posixAccount
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_name (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            user's login name.
                        </para>
                        <para>
                            Default: uid
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_uid_number (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            user's id.
                        </para>
                        <para>
                            Default: uidNumber
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_gid_number (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            user's primary group id.
                        </para>
                        <para>
                            Default: gidNumber
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_gecos (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            user's gecos field.
                        </para>
                        <para>
                            Default: gecos
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_home_directory (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the name of the user's
                            home directory.
                        </para>
                        <para>
                            Default: homeDirectory
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_shell (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the path to the
                            user's default shell.
                        </para>
                        <para>
                            Default: loginShell
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_uuid (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the UUID/GUID of
                            an LDAP user object.
                        </para>
                        <para>
                            Default: nsUniqueId
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_principal (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the user's Kerberos
                            User Principle Name (UPN).
                        </para>
                        <para>
                            Default: krbPrincipalName
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_force_upper_case_realm (boolean)</term>
                    <listitem>
                        <para>
                            Some directory servers, for example Active Directory,
                            might deliver the realm part of the UPN in lower case,
                            which might cause the authentication to fail. Set this
                            option to a non-zero value if you want to use an
                            upper-case realm.
                        </para>
                        <para>
                            Default: false
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_fullname (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            user's full name.
                        </para>
                        <para>
                            Default: cn
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_user_member_of (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that lists the user's
                            group memberships.
                        </para>
                        <para>
                            Default: memberOf
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_search_base (string)</term>
                    <listitem>
                        <para>
                            An optional base DN to restrict group searches
                            to a specific subtree.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>ldap_search_base</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_object_class (string)</term>
                    <listitem>
                        <para>
                            The object class of a group entry in LDAP.
                        </para>
                        <para>
                            Default: posixGroup
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_name (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to
                            the group name.
                        </para>
                        <para>
                            Default: cn
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_gid_number (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that corresponds to the
                            group's id.
                        </para>
                        <para>
                            Default: gidNumber
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_member (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the names of
                            the group's members.
                        </para>
                        <para>
                            Default: memberuid (rfc2307) / member (rfc2307bis)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_group_uuid (string)</term>
                    <listitem>
                        <para>
                            The LDAP attribute that contains the UUID/GUID of
                            an LDAP group object.
                        </para>
                        <para>
                            Default: nsUniqueId
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_network_timeout (integer)</term>
                    <listitem>
                        <para>
                            Specifies the timeout (in seconds) after which
                            the
                            <citerefentry>
                                <refentrytitle>poll</refentrytitle>
                                <manvolnum>2</manvolnum>
                            </citerefentry>/<citerefentry>
                                <refentrytitle>select</refentrytitle>
                                <manvolnum>2</manvolnum>
                            </citerefentry>
                            following a
                            <citerefentry>
                                <refentrytitle>connect</refentrytitle>
                                <manvolnum>2</manvolnum>
                            </citerefentry>
                            returns in case of no activity.
                        </para>
                        <para>
                            Default: 5
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_opt_timeout (integer)</term>
                    <listitem>
                        <para>
                            Specifies a timeout (in seconds) after which
                            calls to synchronous LDAP APIs will abort if no
                            response is received. Also controls the timeout
                            when communicating with the KDC in case of SASL bind.
                        </para>
                        <para>
                            Default: 5
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_tls_reqcert (string)</term>
                    <listitem>
                        <para>
                            Specifies what checks to perform on server
                            certificates in a TLS session, if any. It
                            can be specified as one of the following
                            values:
                        </para>
                        <para>
                            <emphasis>never</emphasis> = The client will
                            not request or check any server certificate.
                        </para>
                        <para>
                            <emphasis>allow</emphasis> = The  server
                            certificate is requested. If no certificate is
                            provided, the session proceeds normally. If a
                            bad certificate is provided, it will be ignored
                            and the session proceeds normally.
                        </para>
                        <para>
                            <emphasis>try</emphasis> = The server certificate
                            is requested. If no certificate is provided, the
                            session proceeds normally. If a bad certificate
                            is provided, the session is immediately terminated.
                        </para>
                        <para>
                            <emphasis>demand</emphasis> = The server
                            certificate is requested. If no certificate
                            is provided, or a bad certificate is provided,
                            the session is immediately terminated.
                        </para>
                        <para>
                            <emphasis>hard</emphasis> = Same as
                            <quote>demand</quote>
                        </para>
                        <para>
                            Default: hard
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_tls_cacert (string)</term>
                    <listitem>
                        <para>
                            Specifies the file that contains certificates for
                            all of the Certificate Authorities that
                            <command>sssd</command> will recognize.
                        </para>
                        <para>
                            Default: use OpenLDAP defaults, typically in
                            <filename>/etc/openldap/ldap.conf</filename>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_tls_cacertdir (string)</term>
                    <listitem>
                        <para>
                            Specifies  the  path of a directory that contains
                            Certificate Authority certificates in separate
                            individual files. Typically the file names need to
                            be the hash of the certificate followed by '.0'.
                            If available, <command>cacertdir_rehash</command>
                            can be used to create the correct names.
                        </para>
                        <para>
                            Default: use OpenLDAP defaults, typically in
                            <filename>/etc/openldap/ldap.conf</filename>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_id_use_start_tls (boolean)</term>
                    <listitem>
                        <para>
                            Specifies that the id_provider connection must also
                            use <systemitem class="protocol">tls</systemitem> to protect the channel.
                        </para>
                        <para>
                            Default: false
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_sasl_mech (string)</term>
                    <listitem>
                        <para>
                            Specify the SASL mechanism to use.
                            Currently only GSSAPI is tested and supported.
                        </para>
                        <para>
                            Default: none
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_sasl_authid (string)</term>
                    <listitem>
                        <para>
                            Specify the SASL authorization id to use.
                            When GSSAPI is used, this represents the Kerberos
                            principal used for authentication to the directory.
                        </para>
                        <para>
                            Default: host/machine.fqdn@REALM
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_krb5_keytab (string)</term>
                    <listitem>
                        <para>
                            Specify the keytab to use when using SASL/GSSAPI.
                        </para>
                        <para>
                            Default: System keytab, normally <filename>/etc/krb5.keytab</filename>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_krb5_init_creds (boolean)</term>
                    <listitem>
                        <para>
                            Specifies that the id_provider should init
                            Kerberos credentials (TGT).
                            This action is performed only if SASL is used and
                            the mechanism selected is GSSAPI.
                        </para>
                        <para>
                            Default: true
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_krb5_ticket_lifetime (integer)</term>
                    <listitem>
                        <para>
                            Specifies the lifetime in seconds of the TGT if
                            GSSAPI is used.
                        </para>
                        <para>
                            Default: 86400 (24 hours)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>krb5_realm (string)</term>
                    <listitem>
                        <para>
                            Specify the Kerberos REALM (for SASL/GSSAPI auth).
                        </para>
                        <para>
                            Default: System defaults, see <filename>/etc/krb5.conf</filename>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_pwd_policy (string)</term>
                    <listitem>
                        <para>
                            Select the policy to evaluate the password
                            expiration on the client side. The following values
                            are allowed:
                        </para>
                        <para>
                            <emphasis>none</emphasis> - No evaluation on the
                            client side. This option cannot disable server-side
                            password policies.
                        </para>
                        <para>
                            <emphasis>shadow</emphasis> - Use
                            <citerefentry><refentrytitle>shadow</refentrytitle>
                            <manvolnum>5</manvolnum></citerefentry> style
                            attributes to evaluate if the password has expired.
                            Note that the current version of sssd cannot
                            update this attribute during a password change.
                        </para>
                        <para>
                            <emphasis>mit_kerberos</emphasis> - Use the attributes
                            used by MIT Kerberos to determine if the password has
                            expired. Use chpass_provider=krb5 to update these
                            attributes when the password is changed.
                        </para>
                        <para>
                            Default: none
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_referrals (boolean)</term>
                    <listitem>
                        <para>
                            Specifies whether automatic referral chasing should
                            be enabled.
                        </para>
                        <para>
                            Please note that sssd only supports referral chasing
                            when it is compiled with OpenLDAP version 2.4.13 or
                            higher.
                        </para>
                        <para>
                            Default: true
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_dns_service_name (string)</term>
                    <listitem>
                        <para>
                            Specifies the service name to use when service
                            discovery is enabled.
                        </para>
                        <para>
                            Default: ldap
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ldap_access_filter (string)</term>
                    <listitem>
                        <para>
                            If using access_provider = ldap, this option is
                            mandatory. It specifies an LDAP search filter
                            criteria that must be met for the user to be
                            granted access on this host. If
                            access_provider = ldap and this option is
                            not set, it will result in all users being
                            denied access. Use access_provider = allow to
                            change this default behavior.
                        </para>
                        <para>
                            Example:
                        </para>
                        <programlisting>
access_provider = ldap
ldap_access_filter = memberOf=cn=allowedusers,ou=Groups,dc=example,dc=com
                        </programlisting>
                        <para>
                            This example means that access to this host is
                            restricted to members of the "allowedusers" group
                            in ldap.
                        </para>
                        <para>
                            Offline caching for this feature is limited to
                            determining whether the user's last online login
                            was granted access permission. If they were
                            granted access during their last login, they will
                            continue to be granted access while offline and
                            vice-versa.
                        </para>
                        <para>
                            Default: Empty
                        </para>
                    </listitem>
                </varlistentry>

            </variablelist>
        </para>
    </refsect1>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/failover.xml" />

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/service_discovery.xml" />

    <refsect1 id='example'>
        <title>EXAMPLE</title>
        <para>
            The following example assumes that SSSD is correctly
            configured and LDAP is set to one of the domains in the
            <replaceable>[domains]</replaceable> section.
        </para>
        <para>
<programlisting>
    [domain/LDAP]
    id_provider = ldap
    auth_provider = ldap
    ldap_uri = ldap://ldap.mydomain.org
    ldap_search_base = dc=mydomain,dc=org
    ldap_tls_reqcert = demand
    cache_credentials = true
    enumerate = true
</programlisting>
        </para>
    </refsect1>

    <refsect1 id='notes'>
        <title>NOTES</title>
        <para>
            The descriptions of some of the configuration options in this manual
            page are based on the <citerefentry>
                <refentrytitle>ldap.conf</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> manual page from the OpenLDAP 2.4 distribution.
        </para>
    </refsect1>

    <refsect1 id='see_also'>
        <title>SEE ALSO</title>
        <para>
            <citerefentry>
                <refentrytitle>sssd.conf</refentrytitle><manvolnum>5</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sssd-krb5</refentrytitle><manvolnum>5</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sssd</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>
        </para>
    </refsect1>
</refentry>
</reference>