# User Auth

Specifies the source of user authentication information.

This property 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 on page 292 and Chapter 10, 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 property specifies. The EMS server accepts successful authentication using any of the specified sources.

Note: The User Auth property does not affect authentication of the default administrator. The server always authenticates the `admin` user from the local configuration file. See Assign a Password to the Administrator on page 129 for more information.

## Classic Configuration

The source for user authenticaiton is set using the user_auth property in the tibemsd.conf file:

    user_auth = [local, ldap, jaas]

## Administration Tool

This property cannot be set using the administration tool.

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