What should you configure for VPN users before they can establish a connection through FortiGate?

Configuring user authentication and access policies is essential for VPN users to establish a connection through FortiGate. This involves ensuring that users are properly authenticated before granting them access to the VPN and the resources it protects. Authentication mechanisms can include usernames and passwords, certificates, or two-factor authentication methods. Access policies then outline what resources users can access once authenticated, providing an added layer of security and ensuring that users have the appropriate permissions based on their roles or needs.

Effective user authentication helps protect the VPN from unauthorized access, while well-defined access policies help to control and limit the traffic allowed through the VPN, reducing potential security vulnerabilities. By focusing on these two aspects, organizations can enhance their overall security posture while allowing legitimate users to connect to necessary resources securely.

The other options, while relevant to an overall network security strategy, do not specifically address the prerequisites for establishing a VPN connection. Network segmentation rules relate more to how different network segments interact and protect against threats. Device encryption settings pertain to securing data at rest or during transmission but do not directly enable VPN connections. Firewall access lists contribute to broader network security but do not govern user-specific authentication for VPN access.