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A Guide to DNS Filtering - Under the Covers

A Guide to DNS Filtering - Under the Covers

A Guide to DNS Filtering - Under the Covers

DNS plays a critical role within the enterprise, securing it is imperative. We explain how DNS works and how best to secure it.

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Contents:

DNS is both an interpreter and roadmap for the Internet. In short DNS maps friendly names to IP addresses.  Due to its critical function within both the Internet and the enterprise, DNS is a primary target for hackers so securing it is imperative.  

An effective security strategy includes not only blocking malicious queries but also servicing good queries as well. DNS plays a judicious role in a layered network security strategy where multiple approaches to cyber defence are required. 


This Guide Examines

  • What is DNS and why filter it?
  • Examining the DNS Structure
  • The Association of DHCP and DNS
  • Preventing a DNS attack
  • How important is DNS in security?
  • What is Reverse DNS?
  • Types of DNS Attacks
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