DNS Firewall

Secure DNS infrastructure against online attacks, increase uptime, and ensure lightning-fast performance with a DNS firewall. A DNS firewall offers security and performance improvements for DNS servers by acting as a protective tool sitting between a user's resolver and the authoritative nameserver. DNS firewalls are equipped with rate-limiting capabilities to deter potential cyber attacks and ensure continuous service operation, even in cases of server downtime, by delivering DNS responses from cache. Additionally, DNS firewalls bolster efficiency with faster DNS lookups and cost-effective bandwidth usage. DNS firewalls natively integrate with DDoS Mitigation and Rate Limiting for best-in-class protection — enabling you to automatically mitigate DDoS attacks and limit the number of queries-per-second that hits your DNS servers. Even if your DNS servers are down, DNS firewalls can answer on your behalf by serving a stale answer from cache. That means your website will be available and traffic continues to flow, even when your origin nameservers are compromised. A DNS firewall caches DNS responses at the network edge, ensuring that queries are resolved lightning-fast on every continent and in every major city regardless of origin server location. TOP DNS FIREWALL USE CASES With robust rate limiting capabilities, DNS firewalls shield your infrastructure from malicious and unwanted traffic. Rate limits are configurable over API, so you can easily configure them based on the health of your origin servers. DDoS attacks on DNS infrastructure are becoming increasingly more common. A DNS firewall reroutes malicious traffic away from your origin nameservers and absorbs it across our global network. DNS firewalls also come with a dedicated automatic mitigation system that stops random prefix attacks. DNS firewalls mask the origin IP addresses of providers’ nameservers, keeping them safe from being targeted by attackers. "Your protection has enabled us to keep growing without worrying about attacks to our DNS infrastructure. Your services have also given our clients a chance to reduce their bandwidth usage and make their sites load faster." -Juan Zolezzi CEO of Duplika BigScoots improves customer site performance and security with Cloudflare 1 Tbps + successfully deflects DDoS attacks 100% uptime, while improving network latency with Magic Transit Cloudflare helps Classmethod secure application and Internet access from a single platform 4,000 blocked requests per week to harmful and unwanted Internet content via DNS filtering Cloudflare protects offices for 100+ U.S. civilian agencies with DNS filtering. 50% Reduction in server response time 20TB Static data offloaded Whitepaper Learn how to easily scale up DNS security. Blog Learn how to mitigate sophisticated DNS DDoS attacks. Insight The evolving DNS threat landscape Article What is DNS security? A DNS firewall offers security and performance improvements for DNS servers by acting as a protective tool sitting between a user's resolver and the authoritative nameserver. It is equipped with rate-limiting capabilities to deter potential cyber attacks such as DoS and DDoS attacks. Some DNS firewalls offer the added benefit of improving performance. A DNS (Domain Name System) firewall is a security tool that sits between the recursive resolver of the user and the nameserver of the website or service they want to reach. The firewall can be integrated with rate limiting and DDoS mitigation services to limit the number of queries hitting a DNS server. If the server should experience downtime for any reason, some DNS firewalls can serve DNS responses from cache, keeping the operator’s site or service online. While DNS firewalls protect DNS servers only, network firewalls guard the boundaries of the network itself. By monitoring and controlling incoming and outgoing traffic based on set security rules, they filter data packets and prevent unauthorized access. Advanced features of network firewalls also block sophisticated cyber-attacks and ensure compliance with security policies.