TCP

August 13, 2019 1:00PM

Heute haben wir Cloudflare Magic Transitangekündigt, das Cloudflares Netzwerk für jeden IP-Datenverkehr im Internet verfügbar macht. Bisher hat Cloudflare hauptsächlich Proxydienste betrieben:...

By 
• Nick Wondra

August 13, 2019 1:00PM

今天我们发布了Cloudflare Magic Transit，它使Cloudflare的网络可被互联网上的任意IP流量使用。到目前为止，Cloudflare主要运营代理服务：我们的服务器终止与Internet用户的HTTP、TCP和UDP会话，并通过与原始服务器创建的新会话传递这些数据。通过Magic Transit，我们现在还在IP层进行运营：除了终止会话之外，我们的服务器还在逐个数据包的基础上应用一套网络功能（DoS缓解、防火墙、路由等等）。...

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• Nick Wondra

May 18, 2019 3:00PM

Recently at I gave a short talk titled "Linux at Cloudflare". The talk ended up being mostly about BPF. It seems, no matter the question - BPF is the answer. Here is a transcript of a slightly adjusted version of that talk....

By 
• Marek Majkowski

March 20, 2019 3:01PM

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....

By 
• Achiel van der Mandele

February 18, 2019 1:13PM

Proper TCP socket splicing reduces the load on userspace processes and enables more efficient data forwarding. We realized that Linux Kernel's SOCKMAP infrastructure can be reused for this purpose....

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• Marek Majkowski

November 29, 2018 9:54AM

As TLS 1.3 was ratified earlier this year, I was recollecting how it started here at Cloudflare. We made the decision to be early adopters of TLS 1.3 a little over two years ago....

By 
• Vlad Krasnov

October 12, 2018 12:00PM

Getting the best end-user performance from HTTP/2 requires good support for resource prioritization. While most web servers support HTTP/2 prioritization, getting it to work well all the way to the browser requires a fair bit of coordination across the networking stack....

By 
• Patrick Meenan

March 29, 2018 10:43AM

A friend gave me an interesting task: extract IP TTL values from TCP connections established by a userspace program. This seemingly simple task quickly exploded into an epic Linux system programming hack....

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• Marek Majkowski

January 15, 2018 9:49PM

Hier bei Cloudflare haben wir viel Erfahrung mit dem Betrieb von Servern im wilden Internet. Aber wir werden in der Beherrschung dieser schwarzen Kunst immer besser....

By 
• Marek Majkowski