How can administrators enhance security in ArcGIS Enterprise?

Utilizing robust authentication methods significantly enhances security in ArcGIS Enterprise by ensuring that only authorized users can access the system and its data. This can include implementing multi-factor authentication, integrating with single sign-on (SSO) solutions, or using secure protocols like SAML or OAuth. By strengthening the authentication process, administrators can better safeguard sensitive information and prevent unauthorized access, which is crucial in environments where data integrity and confidentiality are paramount.

The other options do not contribute positively to security. Disabling firewall protections would actually expose the system to external threats, while minimizing the number of user roles might limit essential access needed for different users rather than enhancing security. Allowing anonymous access undermines user authentication and can lead to data breaches, as it permits unrestricted access to sensitive information. Thus, choosing robust authentication methods is a foundational step toward maintaining a secure ArcGIS Enterprise environment.