# Requirements

In order to use Central Administration, you must meet these requirements:

- Administrative Privileges: The Central Administration user who deploys changes to an EMS server must have administrative permissions to modify any EMS server setting.

  The same username and password used to log in to the Central Administration web interface is used to log on to the EMS server. When JAAS authentication is not configured, the Central Administration server uses the default credentials of user `admin` with no password.

  See Central Administration Server Connection to the EMS Server for more information.

- JSON Configuration Files: The EMS server configuration method relies either on a set of text-based .conf files or a JSON configuration file. Central Administration only supports the latter.

  See JSON Configuration Files for information about JSON files and steps to convert old server configuration files to JSON.

- Supported Browser: The Central Administration web interface can be accessed using browsers supported by their respective vendors at the time of writing. HTML 5-compliant browsers with JavaScript enabled are supported. See the readme file for a full list of supported browsers.

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