January 28, 2018 3:00PM
SEO Performance in 2018 Using Cloudflare
For some businesses SEO is a bad word, and for good reason. Google and other search engines keep their algorithms a well-guarded secret making SEO implementation not unlike playing a game where the referee won’t tell you all the rules....
January 19, 2018 5:38PM
Web Cache Deception Attack revisited
In April, we wrote about Web Cache Deception attacks, and how our customers can avoid them using origin configuration. Since our previous blog post, we have looked for but have not seen any large scale attacks like this in the wild....
December 25, 2017 3:32PM
Simple Cyber Security Tips (for your Parents)
Today, December 25th, Cloudflare offices around the world are taking a break. From San Francisco to London and Singapore; engineers have retreated home for the holidays (albeit with those engineers on-call closely monitoring their mobile phones)....
May 03, 2017 9:02PM
Introducing the new Cloudflare Community Forum
Life @ Cloudflare
Cloudflare’s community of users is vast. With more than 6 million domains registered, our users come in all shapes and sizes and are located all over the world....
April 25, 2017 7:45AM
Ecommerce websites on Cloudflare: best practices
Speed & Reliability
Cloudflare provides numerous benefits to ecommerce sites, including advanced DDOS protection and an industry-leading Web Application Firewall (WAF) that helps secure your transactions and protect customers’ private data....
April 14, 2017 3:00PM
Understanding Our Cache and the Web Cache Deception Attack
About a month ago, security researcher Omer Gil published the details of an attack that he calls the Web Cache Deception attack. It works against sites that sit behind a reverse proxy (like Cloudflare) and are misconfigured in a particular way....
February 02, 2017 12:15PM
NANOG - the art of running a network and discussing common operational issues
The North American Network Operators Group (NANOG) is the loci of modern Internet innovation and the day-to-day cumulative network-operational knowledge of thousands and thousands of network engineers....
August 12, 2016 1:03PM
This is strictly a violation of the TCP specification
I was asked to debug another weird issue on our network. Apparently every now and then a connection going through CloudFlare would time out with 522 HTTP error....
August 03, 2016 11:26AM
CloudFlare's JSON-powered Documentation Generator
Everything that it's possible to do in the CloudFlare Dashboard is also possible through our RESTful API. We use the same API to power the dashboard itself....
August 02, 2016 2:01PM
Introducing the p0f BPF compiler
Two years ago we blogged about our love of BPF (BSD packet filter) bytecode. Today we are very happy to open source another component of the bpftools: our p0f BPF compiler!...
January 19, 2016 6:19PM
Go coverage with external tests
The Go test coverage implementation is quite ingenious: when asked to, the Go compiler will preprocess the source so that when each code portion is executed a bit is set in a coverage bitmap....
March 25, 2015 4:23PM
A Go Gotcha: When Closures and Goroutines Collide
Here's a small Go gotcha that it's easy to fall into when using goroutines and closures. Here's a simple program that prints out the numbers 0 to 9....
June 17, 2012 10:08PM
Keeping passwords safe by staying up to date
Over the last few weeks a number of companies have seen their password databases leaked onto the web and found that despite having made some effort to protect them many of the passwords were easily uncovered....
April 16, 2012 7:04PM
CloudFlare Tips: Recommended steps after activating through a partner
Speed & Reliability
CloudFlare has partnered with a number of CloudFlare Certified Partners to make it simple for website owners that want a faster and safer website....
March 09, 2012 7:12PM
CloudFlare Tips: Recommended Steps for New Users
CloudFlare's core value is that we speed up and protect any website. For new and current users, we wanted to pull together a handy guide that helps you get the most out of CloudFlare....