Flexible, secure SSH with DNSSEC
January 13, 2016
If you read this blog on a regular basis, you probably use the little tool called SSH, especially its ubiquitous and most popular implementation OpenSSH....
Announcing Universal DNSSEC: Secure DNS for Every Domain
November 10, 2015
CloudFlare launched just five years ago with the goal of building a better Internet. That’s why we are excited to announce that beginning today, anyone on CloudFlare can secure their traffic with DNSSEC in just one simple step....
Creative foot-shooting with Go RWMutex
October 29, 2015
Hi, I'm Filippo and today I managed to surprise myself! (And not in a good way.) I'm developing a new module ("filter" as we call them) for RRDNS, CloudFlare's Go DNS server. ...
DNSSEC is Open for Beta
October 20, 2015
Since January, CloudFlare has been running a small, private beta for DNSSEC. Starting today, the DNSSEC beta is open for everyone. ...
Mobile Ad Networks as DDoS Vectors: A Case Study
September 25, 2015
CloudFlare servers are constantly being targeted by DDoS'es. We see everything from attempted DNS reflection attacks to L7 HTTP floods involving large botnets....
MORE POSTS
August 04, 2015
A deep look at CVE-2015-5477 and how CloudFlare Virtual DNS customers are protected
Last week ISC published a patch for a critical remotely exploitable vulnerability in the BIND9 DNS server capable of causing a crash with a single packet. ...
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August 03, 2015
Quick and dirty annotations for Go stack traces
CloudFlare’s DNS server, RRDNS, is entirely written in Go and typically runs tens of thousands goroutines. Since goroutines are cheap and Go I/O is blocking we run one goroutine per file descriptor we listen on and queue new packets for processing....
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July 06, 2015
The Internet is a cooperative system: CNAME to Dyn DNS outage of 6 July 2015
Today, shortly after 21:00 UTC, on our internal operations chat there was a scary message from one of our senior support staff: "getting DNS resolution errors on support.cloudflare.com", at the same time as automated monitoring indicated a problem....
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July 03, 2015
Blue Light Special: Ensuring fast global configuration changes
CloudFlare operates a huge global network of servers that proxy our customers' web sites, operate as caches, inspect requests to ensure they are not malicious, deflect DDoS attacks and handle one of the largest authoritative DNS systems in the world. ...
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June 24, 2015
Check out these brand new videos on how to optimize CloudFlare
Someone once said that the best things in life are free and I can’t agree more. I want to draw the attention of the CloudFlare community to a great resource that helps maximize the value of our product. ...
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June 18, 2015
Go has a debugger—and it's awesome!
Something that often, uh... bugs Go developers is the lack of a proper debugger. Builds are ridiculously fast and easy, but sometimes it would be nice to just set a breakpoint and step through that endless if chain or print a bunch of values without recompiling ten times....
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March 10, 2015
Announcing Virtual DNS: DDoS Mitigation and Global Distribution for DNS Traffic
It’s 9am and CloudFlare has already mitigated three billion malicious requests for our customers today. Six out of every one hundred requests we see are malicious, and increasingly, more of those bad requests are targeting DNS nameservers. ...
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March 06, 2015
Deprecating the DNS ANY meta-query type
DNS, one of the oldest technologies running the Internet, keeps evolving. There is a constant stream of new developments, from DNSSEC, through DNS-over-TLS, to a plentiful supply of fresh EDNS extensions....
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February 05, 2015
Updating the DNS Registration Model to Keep Pace with Today’s Internet.
CloudFlare is, arguably, the largest third-party DNS Authoritative operator in the world. We manage well over 1 million domains and have registrations in almost every TLD open for registrations....
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January 29, 2015
DNSSEC Done Right
I’ve been working on DNSSEC evolution for a long time as implementor, IETF working group chair, protocol experimenter, DNS operator, consultant, and evangelist. ...
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November 05, 2014
DNSSEC: Complexities and Considerations
DNSSEC is an extension to DNS: it provides a system of trust for DNS records. In this post we examine some of the complications of DNSSEC, and what CloudFlare plans to do to reduce any negative impact they might have. ...
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October 07, 2014
DNSSEC: An Introduction
At CloudFlare our mission is to help build a better Internet. Part of this effort includes making web sites faster, more reliable, and more trustworthy....
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August 19, 2014
CloudFlare hiring Go programmers in London and San Francisco
Are you familiar with the Go programming language and looking for a job in San Francisco or London? Then think about applying to CloudFlare. We're looking for people with experience writing Go in both locations....
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July 02, 2014
Making code better with reviews
In the past we've written about how CloudFlare isn't afraid to rip out and replace chunks of code that have proved to be hard to maintain or have simply reach end of life. ...
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