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The NSA warns enterprises to beware of third-party DNS resolvers | Ars Technica
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dns-proxy-and-flatten-overview---no-cover-page-1.png
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Eric A. Hall - - Article Archives - - An Overview of How to Separate Internal And External DNS Servers -
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![Chapter 8] 8.10 Domain Name System (DNS)](http://web.deu.edu.tr/doc/oreily/networking/firewall/figs/fire0813.gif "Chapter 8] 8.10 Domain Name System (DNS)")
Chapter 8] 8.10 Domain Name System (DNS)
