Oblivious DNS to improve privacy

Oblivious DNS is a new proposed standard DNS created by Apple, Fastly and Cloudflare engineers to improve privacy.

The DNS is a cornerstone of the Internet as it translates domains, e.g. iguru.gr to IP addresses. Every time you connect to a website on the Internet, it is required DNS.

The use of encrypted templates DNS, DNS over HTTPS and DNS over TLS, protects traffic DNS from third parties trying to track you down. Even the movement that can be recorded by DNS is valuable as it includes all the destinations that a user visits when using the Internet.

But even if its release DNS is encrypted with the above encryption standards, the provider DNS still has access to the IP address of the device used by the user. The ODoH standard (Oblivious DNS over HTTPS) promises to change that.

Basically, what ODoH does is add a proxy server to the requests between the user's device and the provider. DNS.

This way traffic is routed through the proxy server and this of course leads to improved privacy.

The provider DNS communicates only with the proxy server and not with the end user. In other words, the provider DNS sees the IP of the proxy server but not the IP of the user's device.

ODoH also adds another layer of encryption to ensure that the proxy server cannot read the user's movements. 

Cloudflare posted a detailed overview of Oblivious DNS which provides additional technical details.

Also read the survey Oblivious DNS over HTTPS (ODoH): A Practical Privacy Enhancement to DNS

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