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Active Directory user authentication
editActive Directory user authentication
editYou can configure Elastic Stack security features to communicate with Active
Directory to authenticate users. To integrate with Active Directory, you
configure an active_directory realm and map Active Directory users and groups
to roles in the role mapping file.
See Configuring an active directory realm.
The security features use LDAP to communicate with Active Directory, so
active_directory realms are similar to ldap realms. Like
LDAP directories, Active Directory stores users and groups hierarchically. The
directory’s hierarchy is built from containers such as the organizational unit
(ou), organization (o), and domain controller (dc).
The path to an entry is a Distinguished Name (DN) that uniquely identifies a
user or group. User and group names typically have attributes such as a
common name (cn) or unique ID (uid). A DN is specified as a string, for
example "cn=admin,dc=example,dc=com" (white spaces are ignored).
The security features supports only Active Directory security groups. You cannot map distribution groups to roles.
When you use Active Directory for authentication, the username entered by
the user is expected to match the sAMAccountName or userPrincipalName,
not the common name.
The Active Directory realm authenticates users using an LDAP bind request. After
authenticating the user, the realm then searches to find the user’s entry in
Active Directory. Once the user has been found, the Active Directory realm then
retrieves the user’s group memberships from the tokenGroups attribute on the
user’s entry in Active Directory.
Load balancing and failover
editThe load_balance.type setting can be used at the realm level to configure how
the security features should interact with multiple Active Directory servers.
Two modes of operation are supported: failover and load balancing.
Active Directory realm settings
editMapping Active Directory users and groups to roles
editUser metadata in Active Directory realms
editWhen a user is authenticated via an Active Directory realm, the following properties are populated in the user’s metadata:
Field |
Description |
|
The distinguished name of the user. |
|
The distinguished name of each of the groups that were resolved for the user (regardless of whether those groups were mapped to a role). |
This metadata is returned in the authenticate API and can be used with templated queries in roles.
Additional metadata can be extracted from the Active Directory server by configuring
the metadata setting on the Active Directory realm.
Setting up SSL between Elasticsearch and Active Directory
editSee Encrypting communications between Elasticsearch and Active Directory.