Cloudflare Gateway DNS Filtering

Cloudflare Gateway DNS Filtering is a high-speed, enterprise-grade recursive DNS security and domain filtering solution engineered to intercept cyber threats and enforce corporate browsing policies at the very first hop of internet connectivity. Operating on Cloudflare globally distributed Anycast network, Gateway DNS Filtering inspects billions of daily DNS queries, resolving legitimate requests with microsecond response times while automatically redirecting or blocking queries destined for malicious domains, phishing sites, and command-and-control infrastructure.

The solution provides granular policy management, allowing security administrators to create custom domain allowlists and blocklists, enforce category-based filtering across dozens of content types (such as gambling, social media, adult content, or newly registered domains), and activate safe search across major search engines. Key technical capabilities include native support for encrypted DNS protocols such as DNS over HTTPS (DoH) and DNS over TLS (DoT), scheduled policy enforcement, identity-based DNS policies tied to user directories, and comprehensive DNS activity audit logs. Deployment is highly versatile, supporting direct router/firewall configuration via dedicated Anycast IPv4/IPv6 addresses, location-based source IPs, or the Cloudflare WARP client.

Gateway DNS Filtering integrates seamlessly into the Cloudflare Zero Trust ecosystem and major enterprise identity providers like Microsoft Entra ID and Okta. Common use cases include providing instant perimeter protection for corporate branch offices, securing guest Wi-Fi networks in retail and hospitality, enforcing compliance with children internet protection mandates in schools (CIPA), and stopping malware beaconing before HTTP connections are initiated. Cloudflare Gateway DNS Filtering ensures rapid, dependable, and comprehensive DNS protection.