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With the exponential growth of unmanaged and heterogeneous IT devices (school tablets and PCs, business endpoints, medical equipment, IoT systems, etc.), securing Internet access has become a critical challenge.
A DNS Firewall provides a first line of defense by filtering traffic at the DNS layer, blocking access to malicious, phishing, illegal, command-and-control, or inappropriate domains before any connection is established. This lightweight and highly scalable approach protects users and devices transparently without requiring software installation on every endpoint.
DNS Firewall service is a highly DNS-, DoS- and abuse-aware load-balancer.
There are some products that admit to the notion of a DNS firewall but only offer malicious host filtering capabilities.
Artica Load-balancing does the same but works as a firewall dedicated to DNS protocol.
It offers the possibility to create ACLs like a firewall to influence DNS responses.
With DNS Firewall method it is possible to do this kind of advanced rule :
For a DNS request that is resolved with A or NS or CNAME query on a server located in Panama and if the domain have “.club” or “.pro”' and “.xyz” extension and if it is categorized as Advertising or Tracker, then change the resolved IP address to 127.0.0.1