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11 What can a DNS firewall do?

Firewalls work by applying a set of rules to a traffic flow, where each rule consists of a trigger and an action. Triggers determine which messages within the traffic flow will be handled specially, and actions determine what that special handling will be.…

12 Why use a DNS firewall?

Most modern electronic crime and network abuse relies on the Domain Name System (DNS), thus protection against these threats must include DNS firewalling. A DNS firewall can selectively intercept DNS resolution for known-malicious network assets including…

13 DNS Response Policy Zones - Specification - Format 3

Abstract This memo describes a method for expressing DNS response policy inside a specially constructed DNS zone, and for processing the contents of such zones inside recursive name servers. These response policies are intended for use in fighting Internet…