TCP

February 02, 2022 9:53AM

Often programmers have assumptions that turn out, to their surprise, to be invalid. From my experience this happens a lot. Every API, technology or system can be abused beyond its limits and break in a miserable way...

By 
• Marek Majkowski

November 23, 2021 1:58PM

Announcing general availability of Argo for Spectrum, a way to turbo-charge any TCP based application....

By 
• Achiel van der Mandele

July 14, 2020 12:00PM

flowtrackd is a software-defined DDoS protection system that significantly improves our ability to automatically detect and mitigate even the most complex TCP-based DDoS attacks. If you are a Magic Transit customer, this feature will be enabled by default at no additional cost on July 29, 2020....

By 
• Omer Yoachimik

April 06, 2020 12:00PM

We were wondering - can we just enable Linux "conntrack"? How does it actually work? I volunteered to help the team understand the dark corners of the Linux's "conntrack" stateful firewall subsystem....

By 
• Marek Majkowski

January 14, 2020 4:07PM

At Cloudflare, we develop protocols at multiple layers of the network stack. In the past, we focused on HTTP/1.1, HTTP/2, and TLS 1.3. Now, we are working on QUIC and HTTP/3, which are still in IETF draft, but gaining a lot of interest....

By 
• Lohith Bellad
• ,  Junho Choi

January 08, 2020 5:08PM

Significant work has gone into optimizing TCP, UDP hasn't received as much attention, putting QUIC at a disadvantage. Let's explore a few tricks that help mitigate this....

By 
• Alessandro Ghedini

September 20, 2019 4:53PM

We noticed something weird - the TCP sockets which we thought should have been closed - were lingering around. We realized we don't really understand when TCP sockets are supposed to time out! We naively thought enabling TCP keepalives would be enough... but it isn't!...

By 
• Marek Majkowski

August 13, 2019 2:00PM

Today we announced Cloudflare Magic Transit, which makes Cloudflare’s network available to any IP traffic on the Internet. Up until now, Cloudflare has primarily operated proxy services: our servers terminate HTTP, TCP, and UDP sessions...

By 
• Nick Wondra

August 13, 2019 2:00PM

本日当社は、インターネット上のIPトラフィックでのCloudflareのネットワークの利用を可能にする、Cloudflare Magic Transitを発表いたしました。従来、Cloudflareでは主にプロキシサービスを運営してきました。これは、当社のサーバーがインターネットユーザーのHTTP、TCP、UDPの各セッションを中断し、サーバーがオリジンサーバーとの間に作成する新規セッションを介してデータを渡す仕組みです。Magic Transitでは、CloudflareがIP層の運用にも関与します。...

By 
• Nick Wondra