# user_auth

Specifies the source of user authentication information.

    user_auth = [local, ldap, jaas]

This parameter can have one or more of the following values (separated by comma characters):

- `local`—obtain user authentication information from the local EMS server user configuration.
- `ldap`—obtain user authentication information from an LDAP directory server (see the LDAP-specific configuration parameters).
- `jaas`—obtain user authentication information from a custom authentication module (see Extensible Authentication and JAAS Authentication Modules).

Each time a user attempts to authenticate, the server seeks corresponding authentication information from each of the specified locations in the order that this parameter specifies. The EMS server accepts successful authentication using any of the specified sources.

Note: The `user_auth` setting does not affect authentication of the default administrator. The server always authenticates the admin user from the local configuration file. See Assigning a Password to the Administrator for more information.
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