Title here
Summary here
LDAP
Variables
Some of the values within this page can automatically be replaced with documentation variables.
Configuration
Example Configuration
This section is intended as an example configuration to help users with a rough contextual layout of this configuration section, it is not intended to explain the options. The configuration shown may not be a valid configuration, and you should see the options section below and the navigation links to properly understand each option individually.
authentication_backend:
ldap:
address: 'ldap://127.0.0.1'
implementation: 'custom'
timeout: '5s'
start_tls: false
tls:
server_name: 'ldap.example.com'
skip_verify: false
minimum_version: 'TLS1.2'
maximum_version: 'TLS1.3'
certificate_chain: |
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
private_key: |
-----BEGIN RSA PRIVATE KEY-----
...
-----END RSA PRIVATE KEY-----
pooling:
enable: false
count: 5
retries: 2
timeout: '10 seconds'
base_dn: 'DC=example,DC=com'
additional_users_dn: 'OU=users'
users_filter: '(&({username_attribute}={input})(objectClass=person))'
additional_groups_dn: 'OU=groups'
groups_filter: '(&(member={dn})(objectClass=groupOfNames))'
group_search_mode: 'filter'
permit_referrals: false
permit_unauthenticated_bind: false
permit_feature_detection_failure: false
user: 'CN=admin,DC=example,DC=com'
password: 'password'
attributes:
distinguished_name: 'distinguishedName'
username: 'uid'
display_name: 'displayName'
family_name: 'sn'
given_name: 'givenName'
middle_name: 'middleName'
nickname: ''
gender: ''
birthdate: ''
website: 'wWWHomePage'
profile: ''
picture: ''
zoneinfo: ''
locale: ''
phone_number: 'telephoneNumber'
phone_extension: ''
street_address: 'streetAddress'
locality: 'l'
region: 'st'
postal_code: 'postalCode'
country: 'c'
mail: 'mail'
member_of: 'memberOf'
group_name: 'cn'
extra:
extra_example:
name: ''
multi_valued: false
value_type: 'string'Options
This section describes the individual configuration options.
address
Reference Note
This configuration option uses a common syntax. For more information please see both the configuration example and the Common Syntax: Address reference guide.
The LDAP URL which consists of a scheme, hostname, and port. Format is [<scheme>://]<hostname>[:<port>]. The default
scheme is ldapi if the path is absolute otherwise it’s ldaps, and the permitted schemes are ldap, ldaps, or
ldapi (a unix domain socket).
If the scheme is ldapi it must be followed by an absolute path to an existing unix domain socket that the
user/group the Authelia process is running as has the appropriate permissions to access. For example if the socket is
located at /var/run/slapd.sock the address should be ldapi:///var/run/slapd.sock.
Examples:
authentication_backend:
ldap:
address: 'ldaps://dc1.example.com'authentication_backend:
ldap:
address: 'ldap://[fd00:1111:2222:3333::1]'implementation
string
custom
not required
Configures the LDAP implementation used by Authelia.
See the Implementation Guide for information.
timeout
Reference Note
This configuration option uses a common syntax. For more information please see both the configuration example and the Common Syntax: Duration reference guide.
The timeout for dialing an LDAP connection.
start_tls
boolean
false
not required
Enables use of the LDAP StartTLS process which is not commonly used. You should only configure this if you know you need it. The initial connection will be over plain text, and Authelia will try to upgrade it with the LDAP server. LDAPS URL’s are slightly more secure.
tls
Reference Note
This configuration option uses a common structure. For more information please see both the configuration example and the Common Structure: TLS reference guide.
If defined this option controls the TLS connection verification parameters for the LDAP server.
By default Authelia uses the system certificate trust for TLS certificate verification of TLS connections and the certificates_directory global option can be used to augment this.
pooling
The connection pooling configuration.
enable
boolean
false
not required
Enables the connection pooling functionality.
count
integer
5
not required
The number of open connections to be available in the pool at any given time.
retries
integer
2
not required
The number of attempts to obtain a free connecting that are made within the timeout period. This effectively splits the timeout into chunks.
timeout
Reference Note
This configuration option uses a common syntax. For more information please see both the configuration example and the Common Syntax: Duration reference guide.
The amount of time that we wait for a connection to become free in the pool before giving up and failing with an error.
base_dn
string
situational
Sets the base distinguished name container for all LDAP queries. If your LDAP domain is
example.com this is usually
DC=example,DC=com, however you can fine tune this to be more specific
for example to only include objects inside the authelia OU:
OU=authelia,DC=example,DC=com. This is prefixed with the
additional_users_dn for user searches and additional_groups_dn for
groups searches.
additional_users_dn
string
not required
Additional LDAP path to append to the base_dn when searching for users. Useful if you want to restrict
exactly which OU to get users from for either security or performance reasons. For example setting it to
OU=users,OU=people with a base_dn set to DC=example,DC=com will mean user searches will
occur in OU=users,OU=people,DC=example,DC=com.
users_filter
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the filter defaults for more information.
The LDAP filter to narrow down which users are valid. This is important to set correctly as to exclude disabled users. The default value is dependent on the implementation, refer to the attribute defaults for more information.
additional_groups_dn
string
not required
Similar to additional_users_dn but it applies to group searches.
groups_filter
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the filter defaults for more information.
Similar to users_filter but it applies to group searches. In order to include groups the member is not a direct member of, but is a member of another group that is a member of those (i.e. recursive groups), you may try using the following filter which is currently only tested against Microsoft Active Directory:
(&(member:1.2.840.113556.1.4.1941:={dn})(objectClass=group)(objectCategory=group))
group_search_mode
string
filter
not required
The group search mode controls how user groups are discovered. The default of filter directly uses the filter to
determine the result. The memberof experimental mode does another special filtered search. See the
Reference Documentation for more information.
permit_referrals
boolean
false
not required
Permits following referrals. This is useful if you have read-only servers in your architecture and thus require referrals to be followed when performing write operations.
permit_unauthenticated_bind
boolean
false
not required
WARNING: This option is strongly discouraged. Please consider disabling unauthenticated binding to your LDAP server and utilizing a service account.
Permits binding to the server without a password. For this option to be enabled both the password
configuration option must be blank and the password_reset disable option must be true.
permit_feature_detection_failure
boolean
false
not required
Authelia searches for the RootDSE to discover supported controls and extensions. This option is a compatibility option which should not be enabled unless the LDAP server returns an error when searching for the RootDSE.
user
string
required
The distinguished name of the user paired with the password to bind with for lookup and password change operations.
password
string
required
Important Note
This can also be defined using a secret which is strongly recommended especially for containerized deployments.
The password paired with the user used to bind to the LDAP server for lookup and password change operations.
It’s strongly recommended this is a Random Alphanumeric String with 64 or more characters and the user password is changed to this value.
attributes
The following options configure The directory server attribute mappings. It’s also recommended to check out the Attributes Reference Guide for more information.
distinguished_name
string
situational
Note
This option is technically not required however it is required when using the group search mode
memberof replacement {memberof:dn}.
The directory server attribute which contains the distinguished name, primarily used to perform filtered searches. There is a clear distinction between the actual distinguished name and a distinguished name attribute, all directories have distinguished names for objects, but not all have an attribute representing this that can be searched on.
The only known support at this time is with Active Directory.
username
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the attribute defaults for more information.
The directory server attribute that maps to the username in Authelia. This must contain the {username_attribute} placeholder.
display_name
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the attribute defaults for more information.
The directory server attribute to retrieve which is shown on the Web UI to the user when they log in.
family_name
string
not required
The directory server attribute which contains the users family name.
given_name
string
not required
The directory server attribute which contains the users given name.
middle_name
string
not required
The directory server attribute which contains the users middle name.
nickname
string
not required
The directory server attribute which contains the users nickname.
gender
string
not required
The directory server attribute which contains the users gender.
birthdate
string
not required
The directory server attribute which contains the users birthdate.
website
string
not required
The directory server attribute which contains the users website URL.
profile
string
not required
The directory server attribute which contains the users profile URL.
picture
string
not required
The directory server attribute which contains the users picture URL.
zoneinfo
string
not required
The directory server attribute which contains the users timezone value from the IANA Time Zone Database.
locale
string
not required
The directory server attribute which contains the users locale in the RFC5646 BCP 47 format.
phone_number
string
not required
The directory server attribute which contains the users phone number.
phone_extension
string
not required
The directory server attribute which contains the users phone extension.
street_address
string
not required
The directory server attribute which contains the users street address.
locality
string
not required
The directory server attribute which contains the users locality i.e. city.
region
string
not required
The directory server attribute which contains the users region i.e. state or province.
postal_code
string
not required
The directory server attribute which contains the users postal code.
country
string
not required
The directory server attribute which contains the users country.
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the attribute defaults for more information.
The directory server attribute to retrieve which contains the users email addresses. This is important for the device registration and password reset processes. The user must have an email address in order for Authelia to perform identity verification when a user attempts to reset their password or register a second factor device.
member_of
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the attribute defaults for more information.
The directory server attribute which contains the groups a user is a member of. This is currently only used for the
memberof group search mode.
group_name
string
situational
Note
This option is technically required however the implementation option can implicitly set a default negating this requirement. Refer to the attribute defaults for more information.
The directory server attribute that is used by Authelia to determine the group name.
extra
dictionary(object)
not required
Note
In addition to the extra attributes, you can configure custom attributes based on the values of existing attributes. This is done via the Definitions section.
The extra attributes to load from the directory server. These extra attributes can be used in other areas of Authelia such as OpenID Connect 1.0.
The key represents the backend attribute name, and by default is the name of the attribute within Authelia.
In the example below, we load the directory server attribute exampleServerAttribute into the Authelia attribute
example_authelia_attribute, treat it as a single valued attribute which has an underlying type of integer.
authentication_backend:
ldap:
attributes:
extra:
exampleServerAttribute:
name: 'example_authelia_attribute'
multi_valued: false
value_type: 'integer'name
string
not required
This option changes that attribute name used for internal references within Authelia.
value_type
string
required
This defines the underlying type the attribute must be. This is required if an extra attribute is configured. The valid
values are string, integer, or boolean. When using the integer and boolean types, the directory attributes
must have parsable values.
multi_valued
boolean
not required
This indicates the underlying type can have multiple values.
Refresh Interval
It’s recommended you either use the default refresh interval or configure this to a value low enough to refresh the user groups and status (deleted, disabled, etc) to adequately secure your environment.
Important notes
Users must be uniquely identified by an attribute, this attribute must obviously contain a single value and be guaranteed by the administrator to be unique. If multiple users have the same value, Authelia will simply fail authenticating the user and display an error message in the logs.
In order to avoid such problems, we highly recommended you follow RFC2307 by using sAMAccountName for Active
Directory and uid for other implementations as the attribute holding the unique identifier
for your users.
See Also
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