Imagine your browser sends a bunch of requests, and the server replies with a bunch of responses, batched together in a specific order. With TCP, packets of data get transmitted in batches. But why exactly? We approach the so-called "Head-of-line blocking" problem. Years of acceptance made us view it as something natural - the network is bad, so pages load slowly or don't load at all. Even modern standards like 5G won't protect you from these nuisances - try riding an elevator, for example. Step out of your house into the wilderness of 4G, LTE, and mobile data in general, and you'll inevitably run into such issues as weak signal, slow connection and whatnot. There's a catch, though: they've been doing it well under the near-perfect conditions of stable broadband connection. I'm sure all these acronyms at least ring a bell, and that's because they've been around for ages, doing their job well. Head-Of-Line BlockingĪs mentioned, for the longest time we were at the mercy of TCP transport layer protocol and other protocols that we working over it - TLS, SSL, HTTP. I'll give a couple of examples why QUIC is superior to its predecessors. The fact that it was developed rather recently and not in the times of digital dinosaurs, means that it also solves several crucial problems that weren't obvious at all in the days of yore. There are other ways - other protocols - to do that, you probably at least heard of the good old TCP, which has been predominantly used on the web over the last years and even decades.Ĭompared to TCP, QUIC shows better speed, reliability, and provides better encryption. Simply speaking, QUIC serves as a protocol to transmit packets of data between servers or between a server and a client.
"Ok, now he's just messing with me", you should be thinking. So, QUIC is a (relatively) new transport layer network protocol. So let's take one small step back to then make two steps forward. To be able to understand the intricacies of DNS-over-QUIC, it's only logical that first you should understand what QUIC is. Just in case you need to brush up on what DNS is and how it can be used to boost your online privacy, check out this article from almost exactly two years ago.
I'll kick off this article by explaining what DoQ is, then I'll cover its advantages compared to the alternatives, talk about whether there are any drawbacks or not, and finally give you a step-by-step instruction how to set it up.
AdGuard DNS is the first public DNS resolver to support the new DNS-over-QUIC protocol! We believe that DNS-over-QUIC (or simply DoQ) is the future of DNS encryption and we're extremely proud be the first to present you with the opportunity to try it out.
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