RSS FEEDS BLOG
IntroductionWe use Consul for service discovery, and we’ve deployed a cluster that spans several of our data centers. This cluster exposes HTTP and DNS interfaces so that clients can query the Consul catalog and search…
This new protocol, called Oblivious DNS-over-HTTPS (ODoH), hides the websites you visit from your ISP. Here’s how it works: ODoH wraps a layer of encryption around the DNS query and passes it through a proxy…
Today we are announcing support for a new proposed DNS standard — co-authored by engineers from Cloudflare, Apple, and Fastly — that separates IP addresses from queries, so that no single entity can see both…
Over the last ten years, Cloudflare has become an important part of Internet infrastructure, powering websites, APIs, and web services to help make them more secure and efficient. The Internet is growing in terms of…
Most communication on the modern Internet is encrypted to ensure that its content is intelligible only to the endpoints, i.e., client and server. Encryption, however, requires a key and so the endpoints must agree on…
In this blog post we will discuss how we made our infrastructure DNS zone more reliable by using multiple primary nameservers to leverage our own DNS product running on our edge as well as a…
Cryptocurrency exchange Liquid has revealed that it was hacked last week, after a malicious attacker managed to seize control of its DNS records, seized control of some internal email accounts, and gained access to the…
This week, at the ACM CCS 2020 conference, researchers from UC Riverside and Tsinghua University announced a new attack against the Domain Name System (DNS) called SAD DNS (Side channel AttackeD DNS). This attack leverages…
We recently released a new version of Cloudflare Resolver which adds a piece of information called “Extended DNS Errors” (EDE) along with the response code under certain circumstances. This will be helpful in tracing DNS…
What is secondary DNS, and why is it important?In DNS, nameservers are responsible for serving DNS records for a zone. How the DNS records populate into the nameservers differs based on the type of nameserver.A…
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