Web browsers use a DNS resolver to convert the links you provide them to machine-readable IP addresses. This process helps locate webpages you want to access on your system. But at the same time, it allows DNS resolvers, that are mostly Internet providers, to look at which webpages you’re loading on your browser. This impacts your privacy each time when you access a webpage.
Entities including Apple, Cloudflare, Google, and Mozilla adopted DoH in the past to resolve privacy issues at some extent. That protocol helped make it harder for bad actors to look at the DNS queries you made by using the HTTPS standard for exchanging DNS packets. However, DoH doesn’t exactly help protect your privacy from DNS resolvers. This is where ODoH can be a real saviour.
The new protocol brings a proxy server between the client and the DNS server. This means that a DNS resolver — or simply put, an Internet provider — won’t be able to see from where they’re getting specific queries. It helps protect your identity while processing DNS requests. However, your Internet service provider (ISP) may still be able to see which websites you browse.
Cloudflare engineers, along with Apple and Fastly, have also used DoH as a part of ODoH to protect DNS requests while transporting them between your system and a server.
As reported by TechCrunch, the process helps ensure that the user identity has only been known to the proxy and their webpage request has only been known to the DNS resolver.
Cloudflare found that response times on ODoH are “virtually indistinguishable” from the existing DoH. This suggests that there would not be any noticeable changes on the part of browsing speed.
The protocol also includes a fundamental property that helps ensure that the proxy and the target servers never “collude.” This is aimed to retain user privacy even in case either the proxy or the target server is compromised. However, it also means that the new standard relies heavily on the proxy server it uses for transmitting DNS requests.
Cloudflare has initially implemented ODoH for its 18.104.22.168 DNS service. Other similar services and Web browsers are yet to embrace the new protocol, though. Moreover, you may need to wait for some time to see any mass adoption for the latest development.
Will Apple Silicon Lead to Affordable MacBooks in India? We discussed this on Orbital, our weekly technology podcast, which you can subscribe to via Apple Podcasts, Google Podcasts, or RSS, download the episode, or just hit the play button below.