sssd-ad 5 File Formats and Conventions sssd-ad the configuration file for SSSD This manual page describes the configuration of the AD provider for sssd 8 . For a detailed syntax reference, refer to the FILE FORMAT section of the sssd.conf 5 manual page. The AD provider is a back end used to connect to an Active Directory server. This provider requires that the machine be joined to the AD domain and a keytab is available. The AD provider supports connecting to Active Directory 2008 R2 or later. Earlier versions may work, but are unsupported. The AD provider accepts the same options used by the sssd-ldap 5 identity provider and the sssd-krb5 5 authentication provider with some exceptions described below. However, it is neither necessary nor recommended to set these options. The AD provider can also be used as an access and chpass provider. No configuration of the access provider is required on the client side. By default, the AD provider will map UID and GID values from the objectSID parameter in Active Directory. For details on this, see the ID MAPPING section below. If you want to disable ID mapping and instead rely on POSIX attributes defined in Active Directory, you should set ldap_id_mapping = False Users, groups and other entities served by SSSD are always treated as case-insensitive in the AD provider for compatibility with Active Directory's LDAP implementation. Refer to the section DOMAIN SECTIONS of the sssd.conf 5 manual page for details on the configuration of an SSSD domain. ad_domain (string) Specifies the name of the Active Directory domain. This is optional. If not provided, the configuration domain name is used. For proper operation, this option should be specified as the lower-case version of the long version of the Active Directory domain. ad_server, ad_backup_server (string) The comma-separated list of IP addresses or hostnames of the AD servers to which SSSD should connect in order of preference. For more information on failover and server redundancy, see the FAILOVER section. This is optional if autodiscovery is enabled. For more information on service discovery, refer to the SERVICE DISCOVERY section. ad_hostname (string) Optional. May be set on machines where the hostname(5) does not reflect the fully qualified name used in the Active Directory domain to identify this host. This field is used to determine the host principal in use in the keytab. It must match the hostname for which the keytab was issued. ad_enable_dns_sites (boolean) Enables DNS sites - location based service discovery. If true and service discovery (see Service Discovery paragraph at the bottom of the man page) is enabled, the SSSD will first attempt to discover the Active Directory server to connect to using the Active Directory Site Discovery and fall back to the DNS SRV records if no AD site is found. Default: true krb5_use_enterprise_principal (boolean) Specifies if the user principal should be treated as enterprise principal. See section 5 of RFC 6806 for more details about enterprise principals. Default: true Note that this default differs from the traditional Kerberos provider back end. The following example assumes that SSSD is correctly configured and example.com is one of the domains in the [sssd] section. This example shows only the AD provider-specific options. [domain/EXAMPLE] id_provider = ad auth_provider = ad access_provider = ad chpass_provider = ad ad_server = dc1.example.com ad_hostname = client.example.com ad_domain = example.com The AD access control provider checks if the account is expired. It has the same effect as the following configuration of the LDAP provider: access_provider = ldap ldap_access_order = expire ldap_account_expire_policy = ad