This server-side module enforces authentication for designated areas of a website, requiring valid credentials for access. It is used by administrators and developers to protect sensitive information, private pages, or staging environments from unauthorized visitors.

• Access Control Lists: Define specific directories or files that require authentication, keeping public content accessible while securing private areas.
• Basic Authentication: Implements the standard HTTP Basic Auth protocol, prompting users with a familiar browser login dialog for username and password.
• Credential Management: Integrates with server user files or databases to verify submitted credentials against a stored list of authorized users.
• Custom Error Pages: Allows configuration of the displayed error page when access is denied, enabling branding or clearer instructions for users.
• Lightweight Protection: Adds a fundamental layer of security with minimal performance overhead, acting as a gatekeeper for restricted content.