This plugin provides IP-based access control for a content management system, allowing administrators to restrict posts and pages to visitors from specific network ranges. It is designed for organizations that need to serve internal documentation, partner portals, or staging previews to users based on their network location rather than a login.

• CIDR Group Management: Create named groups containing lists of IPv4 or IPv6 CIDR ranges. Assign these groups to individual posts or pages to control visibility.
• Strict Allowlist Model: Content is only visible if a visitor's IP address matches a CIDR range within an assigned group. Posts with no groups remain fully public.
• Transparent Enforcement: Unauthorized visitors receive a standard 404 error, hiding the existence of restricted content. The restriction applies to front-end views, archives, search results, REST API endpoints, and sitemaps.
• Trusted Proxy Support: Includes configuration for environments where the site is behind a reverse proxy or CDN, ensuring the real client IP is used for access decisions.
• Editor Bypass: Users with editing permissions for a post can always view it on the front end, allowing for content management without access restrictions.