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RIP botsin.space
There's no easy way to put it, so here goes -- after a lot of consideration, I've made the hard (frankly, painful) decision to shut down botsin.space. TLDR: here's the plan:
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OpenSSH Keystroke Obfuscation Bypass
A disclosure for an OpenSSH keystroke obfuscation bypass affecting current OpenSSH versions after 9.4.
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Linux Network Performance Ultimate Guide
https://blog.packagecloud.io/illustrated-guide-monitoring-tuning-linux-networking-stack-receiving-data/
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Traceroute Isn't Real
Almost nobody understands how traceroute works. Worse, it's not a real tool
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A History of the TTY
It's one of those anachronisms that is deeply embedded in modern technology. From cloud operator servers to embedded controllers in appliances, there must be uncountable devices that think they are connected to a TTY.
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Are We Watching the Internet Die?
Sometime this month, Reddit will go public at a valuation of $6.5bn. Select Redditors were offered the chance to buy stock at the initial listing price, which it hasn’t announced yet but is expected to be in the range of $31-34 per share. Regardless of the actual
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Firewall rules: not as secure as you think
A post outlining tricks for firewall privilege escalation
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Computer Networking Fundamentals – Learning Series (2023)
This colorful series walks you through the networking basics in just a few thousand words! It also offers hands-on labs to practice the obtained knowledge.
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Threads Enables Fediverse Replies
Last night Adam Mosseri, Head of Instagram, quitely announced the next step in the integration of Threads into the Fediverse. In addition to being able to follow Threads accounts from Fediverse/Mastodon accounts, we can now reply to and like Threads posts. Threads are taking a quiet, incremental approach to…
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The Top of the DNS Hierarchy
In the past (in fact two years ago, proof I have been doing this for a while now!) I wrote about the "inconvenient truth" that structural aspects of the Internet make truly decentralized systems infeasible, due to the lack of a means to perform broadcast discovery. As a result, most distributed systems rely on a set…
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Ethernet History Deepdive – Why Do We Have Different Frame Types?
In my previous post Encapsulation of PDUs On Trunk Ports , I showed what happens to PDUs when you change the configuration of a trunk. You may have noticed that there are typically three different types of Ethernet encapsulations that we see:
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I'm blocking connections from AWS to my on-prem services
The direct result of bulletproof infrastructure / cloud providers which are "too big to fail" is the balkanized internet . I don't think this has fully come to pass, but it might be starting to happen or might come to pass soon.
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Deploying fiber in the home
Getting a fiber Internet connection to your home is a big deal! It’s probably the last physical connection you’ll ever need, due to the virtually unlimited bandwidth, stability, performance, and attainable speeds.
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How I learned to stop worrying and love userspace networking
Userspace wireguard is fun!
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Jetstream: Shrinking the AT Protocol Firehose by >99%
Jetstream is a streaming service that consumes an AT Proto Sync Firehose and converts it into lightweight, filterable, friendly JSON, allowing us to live tail all posts on Bluesky for as little as ~850 MB/day
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The Linux audio stack demystified (and more)
Digital audio processing is a complex yet fascinating subject. Getting a deeper understanding requires knowledge in multiple technical disciplines, including physics, electrical/electronical engineering, and some software engineering when it comes to parts of the Linux ecosystem. This article aims to demystify the…
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Cool URIs can be ugly (2023)
Around last year this blog, a simple static site, was running on GitHub pages, together with Cloudflare in front of it due to (perceived) unreliability with GitHub’s SSL provisioning for custom domains. In order to simplify my stack, I tried running it on Cloudflare Pages .
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How QUIC is displacing TCP for speed
What is QUIC protocol and how does it work ?
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Building the Bell System
If someone was making a list of the most important American companies today, it’s unlikely AT&T would be anywhere near the top.
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Starlink terminal revision 4: overview and tests
Revision 4 is the new version of the Starlink user terminal. As of February 2024, the new version is only available in the US. I decided to test the new hardware and compare it to the well-known REV3 (a.k.a. Gen2/V2 or “Standard Actuated”).
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The “simple” 38 step journey to getting an RFC
The Internet is built on the mutual understanding of network protocols and practices, and most of those protocols are defined using Request For Comments (RFC) or Best Common Practices (BCP) documents.
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TCP connection timeout mystery
For over a year, I’ve been investigating a strange issue with the internet in my apartment. I’m posting the details here in case someone more knowledgeable than me can solve the mystery. I live in graduate student housing with internet provided by the university campus. Usually things work reasonably well, with one…
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Message order in Matrix: right now, we are deliberately inconsistent
Coding in Rust and others; making coding videos.
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XMPP: The Gem of Instant Messaging
Posts about SmolWeb, Gemini protocol and LowTech
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"Doors" in Solaris: Lightweight RPC Using File Descriptors (1996)
A door is a "file" descriptor used to describe a procedure in a process and optionally some additional state associated with the procedure. Doors were initially designed as Spring object descriptors used to encapsulate the state and capabilities of C++ objects. A process which obtains a door is free to pass it, along…
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The internet is slipping out of our reach
With AI encroaching every open forum on the internet, the future of human discourse is bleak.