Cloudflare for SSH, RDP and Minecraft
April 13, 2020 7:06 PM
Cloudflare now covers SSH, RDP and Minecraft, offering DDoS protection and increased network performance. Spectrum pay-as-you-go now available on all paid plans....
Rolling With The Punches: Shifting Attack Tactics & Dropping Packets Faster & Cheaper At The Edge
April 10, 2020 11:00 AM
Over the past 6 months, volumetric DDoS attacks decreased by 82%. However volumetric attacks are not gone yet, still peaking as high as 418 Gbps. In this post, we cover the changing attack landscape and how Cloudflare adapts and evolves to keep the internet safe....
Announcing Network Analytics
March 16, 2020 12:00 PM
Back in March 2019, we released Firewall Analytics which provides insights into HTTP security events across all of Cloudflare's protection suite; Firewall rule matches, HTTP DDoS Attacks, Site Security Level which harnesses Cloudflare's threat intelligence, and more....
Who DDoS'd Austin?
October 24, 2019 1:00 PM
It was a scorching Monday on July 22 as temperatures soared above 37°C (99°F) in Austin, TX, the live music capital of the world. Only hours earlier, the last crowds dispersed from the historic East 6th Street entertainment district. ...
On the recent HTTP/2 DoS attacks
August 13, 2019 5:00 PM
Today, multiple Denial of Service (DoS) vulnerabilities were disclosed for a number of HTTP/2 server implementations. Cloudflare uses NGINX for HTTP/2. Customers using Cloudflare are already protected against these attacks....
MORE POSTS
March 20, 2019 3:01 PM
Spectrum for UDP: DDoS protection and firewalling for unreliable protocols
Today, we're announcing Spectrum for UDP. Spectrum for UDP works the same as Spectrum for TCP: Spectrum sits between your clients and your origin. Incoming connections are proxied through, whilst applying our DDoS protection and IP Firewall rules. ...
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November 28, 2018 7:59 PM
L4Drop: XDP DDoS Mitigations
Efficient packet dropping is a key part of Cloudflare’s distributed denial of service (DDoS) attack mitigations. In this post, we introduce a new tool in our packet dropping arsenal: L4Drop....
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November 12, 2018 11:27 AM
The rise of multivector DDoS attacks
It's been a while since we last wrote about Layer 3/4 DDoS attacks on this blog. This is a good news - we've been quietly handling the daily onslaught of DDoS attacks. Since our last write-up, a handful of interesting L3/4 attacks have happened. Let's review them....
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July 06, 2018 1:00 PM
How to drop 10 million packets per second
Internally our DDoS mitigation team is sometimes called "the packet droppers". When other teams build exciting products to do smart things with the traffic that passed through our network, we take joy in discovering novel ways of discarding it....
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May 21, 2018 8:41 PM
Rate Limiting: Delivering more rules, and greater control
With more and more platforms taking the necessary precautions against DDoS attacks like integrating DDoS mitigation services and increasing bandwidth at weak points, Layer 3 and 4 attacks are just not as effective anymore. ...
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April 12, 2018 1:01 PM
Introducing Spectrum: Extending Cloudflare To 65,533 More Ports
We are introducing Spectrum, which brings Cloudflare’s security and acceleration to the whole spectrum of TCP ports and protocols for our Enterprise customers. It’s DDoS protection for any box, container or VM that connects to the internet....
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April 12, 2018 1:00 PM
Abusing Linux's firewall: the hack that allowed us to build Spectrum
Introducing Spectrum: a new Cloudflare feature that brings DDoS protection, load balancing, and content acceleration to any TCP-based protocol.Today we are releasing Spectrum. ...
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March 06, 2018 3:46 PM
The real cause of large DDoS - IP Spoofing
A week ago we published a story about new amplification attacks using memcached protocol on UDP port 11211. A few things happened since then: Github announced it was a target of 1.3Tbps memcached attack. OVH and Arbor reported similar large attacks with the peak reported at 1.7Tb...
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February 27, 2018 2:38 PM
Memcrashed - Major amplification attacks from UDP port 11211
Over last couple of days we've seen a big increase in an obscure amplification attack vector - using the memcached protocol, coming from UDP port 11211. In the past, we have talked a lot about amplification attacks happening on the internet. ...
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December 24, 2017 4:57 PM
TLS 1.3 is going to save us all, and other reasons why IoT is still insecure
As I’m writing this, four DDoS attacks are ongoing and being automatically mitigated by Gatebot. Cloudflare’s job is to get attacked. Our network gets attacked constantly....
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December 22, 2017 2:17 PM
Technical reading from the Cloudflare blog for the holidays
During 2017 Cloudflare published 172 blog posts (including this one). If you need a distraction from the holiday festivities at this time of year here are some highlights from the year....
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December 21, 2017 2:01 PM
2018 and the Internet: our predictions
At the end of 2016, I wrote a blog post with seven predictions for 2017. Let’s start by reviewing how I did. I’ll score myself with two points for being correct, one point for mostly right and zero for wrong. That’ll give me a maximum possible score of fourteen. Here goes......
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December 14, 2017 7:41 PM
Inside the infamous Mirai IoT Botnet: A Retrospective Analysis
This post provides a retrospective analysis of Mirai — the infamous Internet-of-Things botnet that took down major websites via massive distributed denial-of-service using hundreds of thousands of compromised Internet-Of-Things devices....
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December 07, 2017 8:44 PM
On the Leading Edge - Cloudflare named a leader in The Forrester Wave: DDoS Mitigation Solutions
Cloudflare has been recognized as a leader in the “Forrester WaveTM: DDoS Mitigation Solutions, Q4 2017.”...
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