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Cloudflare is turning off the internet for me
A classically trained sysadmin shouting into the void.
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Looking back at how Signal works
In the midst of world-wide protests against racism and police brutality, a lot of people are becoming more immediately aware and concerned about the security of their data and online communication. We’ve gotten a lot of questions at Signal over the past week, so we wanted to briefly recap how it ...
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Gitter now speaks Matrix
Matrix, the open protocol for secure decentralised communications
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Chromium's Impact on Root DNS Traffic
Guest Post: With 70% of market share, Chromium has had a significant impact on the total root DNS traffic.
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How 1500 bytes became the MTU of the internet
Ethernet is everywhere, tens of thousands of hardware vendors speak and implement it. However almost every ethernet link has one number in common, the MTU:
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Moving your SSH port isn’t security by obscurity
I just came across another post on Hacker News talking about why you shouldn’t move your SSH port off of 22 because it’s Security by Obscurity. Ther
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Ignore AMP
In 2018, my recommendation was to avoid AMP, to use AMP for the most relevant pages, or to use AMP only. In 2020 my recommendation is to ignore it, because AMP largely appears meaningless now. <cite>Upgrade Your HTML II</cite> gives an opinionated idea why.
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First trans-Atlantic contact made on 432 MHz
On Tuesday the 7th of April 2020 , a remarkable contact was made with the FT8 digital mode on 432 MHz between D4VHF on the Cape Verde Is...
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Stable 1.2 Gigabit/s Internet achieved in moving train in Switzerland
Uninterrupted, good quality mobile phone reception is extremely important to rail passengers.
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1.1.1.1 for Families
Introducing 1.1.1.1 for Families — the easiest way to add a layer of protection to your home network and protect it from malware and adult content.
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The majority of Facebook's traffic now uses QUIC and HTTP/3
We are replacing the de facto protocol the internet has used for decades with QUIC, the latest and most radical step we’ve taken to optimize our network protocols to create a better experience for …
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Small mail server best current practices
(This post was originally written as a reply on the mailop mailing-list, but a friend asked me to turn it into a blog post. I’ve edited it, mostly adding more links to elsewhere, but there are some additions here.)
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How Do Routers Work, Really?
An accessible overview of how exactly a router works, with code examples.
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SSH Agent Explained
The SSH agent acts behind the scenes to keep you safe. Here's how it works.
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Chrome is deploying HTTP/3 and IETF QUIC
QUIC is a new networking transport protocol that combines the features of TCP, TLS, and more. HTTP/3 is the latest version of HTTP, the prot...
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We abused Slack's TURN servers to gain access to internal services
Slack's TURN server allowed relaying of TCP connections and UDP packets to internal Slack network and meta-data services on AWS.
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I2C in a Nutshell
A community and blog for embedded software makers
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Cloudflare One
Today we’re announcing Cloudflare One. It provides secure, fast, reliable, cost-effective network services, integrated with leading identity management and endpoint security providers.
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Zero-days in Cisco Discovery Protocol
Identify which devices of your company are impacted by five vulnerabilities that Armis found out in the Cisco Discovery Protocol (CPD).
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Getting Started with WireGuard
Software developer
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What developers should know about TCP
Why do you need to place your servers geographically close to your users? One of the reasons is to achieve lower latencies. That makes a lot of sense when you are sending short bursts of data that should be delivered as quickly as possible. But what about large files, such as videos? Surely there is a latency penalty…
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DigitalOcean VPC
Helping millions of developers easily build, test, manage, and scale applications of any size - faster than ever before.