Enforce Web Policy with HTTP Strict Transport Security (HSTS)
2015-02-26
HTTP Strict Transport Security (HSTS, RFC 6797) is a web security policy technology designed to help secure HTTPS web servers against downgrade attacks....
Universal SSL: Encryption all the way to the origin, for free
2015-02-24
Last September, CloudFlare unveiled Universal SSL, enabling HTTPS support for all sites by default. All sites using CloudFlare now support strong cryptography from the browser to CloudFlare’s servers....
TLS Session Resumption: Full-speed and Secure
2015-02-24
At CloudFlare, making web sites faster and safer at scale is always a driving force for innovation. We introduced “Universal SSL” to dramatically increase the size of the encrypted web....
Do the ChaCha: better mobile performance with cryptography
2015-02-23
CloudFlare is always trying to improve customer experience by adopting the latest and best web technologies so that our customers (and their visitors) have a fast and a secure web browsing experience....
End of the road for RC4
2015-02-23
Today, we completely disabled the RC4 encryption algorithm for all SSL/TLS connections to CloudFlare sites. It's no longer possible to connect to any site that uses CloudFlare using RC4....
SSL Week Means Less Weak SSL
2015-02-23
I'm excited to announce that today kicks off SSL Week at CloudFlare. Over the course of this week, we'll make a series of announcements on what we're doing to improve encryption on the Internet....
Get Started with CloudFlare ServerShield for Plesk
2015-02-09
CloudFlare has partnered with Parallels, the leading hosting solutions provider, to make server protection, content acceleration and malware removal easier than ever....
Updating the DNS Registration Model to Keep Pace with Today’s Internet.
2015-02-05
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....
Path MTU discovery in practice
2015-02-04
Last week, a very small number of our users who are using IP tunnels (primarily tunneling IPv6 over IPv4) were unable to access our services because a networking change broke "path MTU discovery" on our servers. ...
DNSSEC Done Right
2015-01-29
I’ve been working on DNSSEC evolution for a long time as implementor, IETF working group chair, protocol experimenter, DNS operator, consultant, and evangelist. ...
Help us test our DNSSEC implementation
2015-01-29
Today is a big day for CloudFlare! We are publishing our first two DNSSEC signed zones for the community to analyze and give feedback on....
Flexible SSL & Wordpress: Fixing “Mixed Content” Errors
2015-01-21
As many are aware, CloudFlare launched Universal SSL several months ago. We saw lots of customers sign up and start using these new, free SSL certificates. For many customers that didn’t already have an SSL certificate, they were able to use “Flexible SSL”....
DDoS Packet Forensics: Take me to the hex!
2015-01-06
A few days ago, my colleague Marek sent an email about a DDoS attack against one of our DNS servers that we'd been blocking with our BPF rules....
CloudFlare in 2014: Bigger, Faster, Securer
2014-12-31
At the end of 2013 we posted a blog article titled 2013: Rebuild the Engine; 2014: Step on the Gas which explained how in 2013 we had been rebuilding the engine that powers CloudFlare and how we expected 2014 to be when we stepped on the gas....
Kyoto Tycoon Secure Replication
2014-12-22
Kyoto Tycoon is a distributed key-value store written by FAL Labs, and it is used extensively at CloudFlare. Like many popular key-value stores, Kyoto Tycoon uses timestamp-based replication to ensure eventual consistency and guarantee ordering....
Improving PicoHTTPParser further with AVX2
2014-12-18
In a recent post, Kazuho's Weblog describes an improvement to PicoHTTPParser. This improvement utilizes the SSE4.2 instruction PCMPESTRI in order to find the delimiters in a HTTP request/response and parse them accordingly. ...
Johannesburg: CloudFlare’s 30th data center
2014-12-09
Fire up the celebration braai, Jozi! CloudFlare is here, and it’s a big one. An important milestone (our 30th data center) calls for an equally important new location: Johannesburg, South Africa, our first data center in Africa....
Lima, Peru: CloudFlare’s 29th data center
2014-12-03
Just when you thought we’d reached the end, CloudFlare’s Latin America data center expansion continues. Hot on the heels of our recent expansion into Santiago, São Paulo, and Medellin, this holiday season commences in Lima with our 29th data center globally, and our fourth in Latin America....
Prepare Your Site for Traffic Spikes this Holiday Season
2014-11-17
The holiday season is approaching, and everyone is thinking about gifts for their friends and family. As people increasingly shop online, this means huge spikes in traffic for web sites---especially ecommerce sites....
Migrating to the Ghost Blogging Platform
2014-11-11
For those of you that follow the CloudFlare blog, you’ll know that we try to be prolific. We have industry leaders like Matthew Prince, John Graham-Cumming, Nick Sullivan, and others publishing pieces weekly from the front lines of internet performance and security....