How to keep your ISP’s nose out of your browser history with encrypted DNS

Encrypting DNS traffic between your device and a “privacy-focused” provider can keep someone from spying on where your browser is pointed or using DNS attacks to send you somewhere else. (credit: Westend61 / Getty Images

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The death of network neutrality and the loosening of regulations on how Internet providers handle customers’ network traffic have raised many concerns over privacy. Internet providers (and others watching traffic as it passes over the Internet) have long had a tool that allows them to monitor individuals’ Internet habits with ease: their Domain Name System (DNS) servers. And if they haven’t been cashing in on that data already (or using it to change how you see the Internet), they likely soon will.

DNS services are the phone books of the Internet, providing the actual Internet Protocol (IP) network address associated with websites’ and other Internet services’ host and domain names. They turn arstechnica.com into 50.31.169.131, for example. Your Internet provider offers up DNS as part of your service, but your provider could also log your DNS traffic—in essence, recording your entire browsing history.

“Open” DNS services provide a way of bypassing ISPs’ services for reasons of privacy and security—and in some places, evading content filtering, surveillance, and censorship. And on April 1 (not a joke), Cloudflare launched its own new, free high-performance authoritative DNS service designed to enhance users’ privacy on the Internet. This new offering also promised a way to hide DNS traffic completely from view—encryption.

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