Delivering Dot

Published on by Dani Grant.

Since March 30, 2017, Cloudflare has been providing DNS Anycast service as additional F-Root instances under contract with ISC (the F-Root operator). F-Root is a single IPv4 address plus a single IPv6 address which both ISC and Cloudflare announce to the global Internet as a shared Anycast. This document reviews how F-Root has performed since that date in March 2017. The DNS root servers are an important utility…

Hurricane Irma

Published on by Jérôme Fleury.

Yesterday, we described how Hurricane Irma impacted several Caribbean islands, with the damage including a significant disruption to Internet access. Source: accuweather.com As Irma is now forecast to hit southern Florida as category 5 this weekend with gusty winds reaching up to 155mph, it is also expected that Internet infrastructure in the region will suffer. At the time of writing, we haven’t noticed any decrease in…

The Story of Two Outages

Published on by Louis Poinsignon.

Over the last two days, Cloudflare observed two events that had effects on global Internet traffic levels. Cloudflare handles approximately 10% of all Internet requests, so we have significant visibility into traffic from countries and networks across the world. On Tuesday, September 5th, the government of Togo decided to restrict Internet access in the country following political protests. The government blocked social networks and rate-limited traffic, which had…

SIDH in Go for quantum-resistant TLS 1.3

Published on by Henry de Valence.

This blog post presents a new cryptography primitive that we open sourced: p751sidh. The Quantum Threat Most of today's cryptography is designed to be secure against an adversary with enormous amounts of computational power. This means estimating how much work certain computations (such as factoring a number, or finding a discrete logarithm) require, and choosing cryptographic parameters based on our best estimate of how much work would be…

Portland (Oregon): Cloudflare's 117th Data Center!

Published on by Nitin Rao.

Even as the luckiest amongst us across the US West Coast dashed off to Oregon to be closer to the solar eclipse path of totality, Cloudflare engineers were busy turning up our newest data center in Portland. This deployment serves as our 27th data center in North America alone, and our 117th globally. It also provides additional redundancy to our Seattle and San Jose data centers, while increasing…