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Going to IETF 95? Join the TLS 1.3 hackathon

If you’re in Buenos Aires on April 2-3 and are interested in building, come join the IETF Hackathon. CloudFlare and Mozilla will be working on TLS 1.3, the first new version of TLS in eight years! At...

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The Trouble with Tor

The Tor Project makes a browser that allows anyone to surf the Internet anonymously. Tor stands for "the onion router" and that describes how the service works. Traffic is routed through a number of...

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Introducing CFSSL 1.2

Continuing our commitment to high quality open-source software, we’re happy to announce release 1.2 of CFSSL, our TLS/PKI Swiss Army knife. We haven’t written much about CFSSL here since we originally...

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Come Geek Out With The Original Inventor of DNS at CloudFlare

We like DNS, we think you might too. CloudFlare and Gandi are hosting a three-part series on DNS. Our first event will be at the CloudFlare office with Paul Mockapetris, the original inventor of the...

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It takes two to ChaCha (Poly)

Not long ago we introduced support for TLS cipher suites based on the ChaCha20-Poly1305 AEAD, for all our customers. Back then those cipher suites were only supported by the Chrome browser and Google's...

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The revenge of the listening sockets

Back in November we wrote a blog post about one latency spike. Today I'd like to share a continuation of that story. As it turns out, the misconfigured rmem setting wasn't the only source of added...

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CloudFlare Crypto Meetup: April 21, 2016

CloudFlare Crypto Meetup Teaser. Now back in HD: the CloudFlare Cryptography Meetup series. A while back, CloudFlare hosted a pair of Meetups focused on encryption and cryptographic technology. Now...

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The curious case of slow downloads

Some time ago we discovered that certain very slow downloads were getting abruptly terminated and began investigating whether that was a client (i.e. web browser) or server (i.e. us) problem. Some...

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Taipei: CloudFlare’s 77th Data Center is Now Live

台北:CloudFlare的第七十七個數據中心已經上線喔! We are excited to announce the launch of our Taipei data center, which is our 28th data center in Asia, and our 77th data center globally. Millions of websites which were...

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What happened next: the deprecation of ANY

Almost a year ago, we announced that we were going to stop answering DNS ANY queries. We were prompted by a number of factors: The lack of legitimate ANY use. The abundance of malicious ANY use. The...

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New for Virtual DNS Customers: Self-Service Dashboard and APIs, and Two New...

Today we're launching two new features and a brand new dashboard and API for Virtual DNS. Virtual DNS is CloudFlare’s DNS proxy that sits in front of some of the largest hosting providers in the world,...

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IETF Hackathon: Getting TLS 1.3 working in the browser

Over the last few years, the IETF community has been focused on improving and expanding the use of the technical foundations for Internet security. Part of that work has been updating and deploying...

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Today Is A Big Day For Page Rules

Today we're releasing a whole suite of upgrades to page rules: API support, additional settings, pausing a page rule and a mobile-friendly design. Page Rules is the technology that allows you to...

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Empty DDoS Threats: Meet the Armada Collective

Beginning in March 2016, we began hearing reports of a gang of cybercriminals once again calling themselves the Armada Collective. The calling card of the gang was an extortion email sent to a wide...

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Kiev, Ukraine: CloudFlare’s 78th Data Center

Здоровенькі були! CloudFlare just turned up our newest datacenter in Kiev, the capital and largest city of Ukraine. Kiev is an old city with more than 1,000 years of history. It was the capital of...

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Building the simplest Go static analysis tool

Go native vendoring (a.k.a. GO15VENDOREXPERIMENT) allows you to freeze dependencies by putting them in a vendor folder in your project. The compiler will then look there before searching the GOPATH....

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Ask Me Anything About HTTP/2

We're big fans of HTTP/2 at CloudFlare. Our customers make up the majority of HTTP/2 enabled domains today. HTTP/2 is a key part of the modern web, and its growth and adoption is changing how websites...

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Announcing Support for HTTP/2 Server Push

Last November, we rolled out HTTP/2 support for all our customers. At the time, HTTP/2 was not in wide use, but more than 88k of the Alexa 2 million websites are now HTTP/2-enabled. Today, more than...

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Lizard Squad Ransom Threats: New Name, Same Faux Armada Collective M.O.

CloudFlare recently wrote about the group of cyber criminals claiming to be be the "Armada Collective." In that article, we stressed that this group had not followed through on any of the ransom...

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Bangkok, Thailand: CloudFlare’s 79th Data Center

CloudFlare just turned up our newest data center in Bangkok, the capital of Thailand and a very popular destination with travelers in Southeast Asia. This expands our network to span 32 cities across...

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