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Why use a DNS firewall?
Author: Paul Vixie Reference Number: AA-00514 Views: 8057 Created: 2011-11-01 06:02 Last Updated: 2011-11-01 19:49 0 Rating/ Voters

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 domain names, IP addresses, and name servers. Interception can mean rewriting a DNS response to direct a web browser to a "walled garden", or simply making the malicious network assets invisible and unreachable.

See also: Building DNS Firewalls with Response Policy Zones (RPZ)

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