# Enable Extensible Authentication

Extensible authentication is enabled in the EMS server, through parameters in the tibemsd.conf configuration file. The required parameters are:

- `authorization`—directs the server to verify user credentials and permissions on secure destinations.
- `user_auth`—directs the EMS server to use the LoginModule for authentication.
- `security_classpath`—specifies the JAR files and dependent classes used by the LoginModule.
- `jaas_config_file`—specifies the configuration file, usually jaas.conf, that loads the LoginModule. For more information, see the Example jaas.conf Configuration File.

Because the LoginModule runs in the Java virtual machine, you must also enable the JVM in the EMS server. See Enable the JVM for more information.

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