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There’s more than one way to write an IP address (2019)
There's more than one way to write an IP address: decimal, hex, octal, overflowed octets and omitted zeroes all resolve to the same host. A fun trick to mess …
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The latest blog posts to take off on Hacker News. 1,615 posts.
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Listening to Satellites: A Journey with My RTL-SDR V3
How I received the signal of MANY satellites with an RTL-SDR V3
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Mastodon is doomed?
Mastodon won't be the next Twitter, and it's not because of Bluesky. The ideals and execution won't scale.
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Fun with Kermit and ZMODEM over SSH
Fun with Kermit and ZMODEM file transfers over SSH using Qodem
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OpenVMS 9.2 for x86: Auto boot, licenses, PAKs, networking and SSH
Published: 15-04-2023 22:30 | Author: Remy van Elst | Text only version of this article
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Load Balancing
A bottom-up, animated guide to HTTP load balancing algorithms.
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OpenSSH versus SSH
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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Closing a stale SSH connection
Suppose you’re connected to a remote host with SSH and after a while the SSH session goes stale. The terminal is unresponsive and no keypress seem to take effect. There might be something with the network, the remote host is restarting or maybe your machine has been in hibernation, there could be multiple reasons for…
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Gmail is killing independent email
Email is an open system, right? Anyone can send a message to anyone... unless they are on Gmail! School Interviews uses two email servers t...
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The Twitter API is now effectively unmaintained
Posted on the Twitter Developers forum and IndieNews. Hi all! I don’t have much new to say about the ongoing chaos at Twitter or the impending death of the free API tier. I’d just like …
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Using a Mac without a network connection
New version of ViableS runs in a sandbox, with no shared folders, and can now be isolated from networks. So how well does Ventura work without internet?
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Who reads your email?
A look at diversity of MX records across all gTLDs and the Top 1M domains, indicating where SMTP is concentrated and what organizations might have broad access to the world's emails.
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Globally Distributed Elixir over Tailscale
The result of my exploration of Elixir clustering and automating global network discovery and connection over Tailscale.
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I spent a week without IPv4 to understand IPv6 transition mechanisms
The time has come to talk about something uncomfortable to a lot of you. You’ve been using legacy methods for far too long. It’s time to move to IPv6. But, of course, there’s a lot more to IPv6 than ‘just’ switching everything over. A lot of systems in the world still haven’t…
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Activity Pub vs. Web Frameworks
Personal site and blog
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ARM vs. Intel on Amazon’s Cloud: A URL Parsing Benchmark
Twitter user opdroid1234 remarked that they are getting more performance out of the ARM nodes than out of the Intel nodes on Amazon's cloud (AWS). I found previously that the Graviton 3 processors had less bandwidth than comparable Intel systems. However, I have not done much in terms of raw compute power. The Intel…
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Using HDMI radio interference for high-speed data transfer
A blog about signals, programming, music, and other stuff.
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Computer Networking Introduction: Ethernet and IP – Heavily Illustrated (2021)
What is a LAN? What is a network segment? How are L1, L2, and L3 segments related? What does it take to send an IP packet from one host to another? What is the difference between LAN, VLAN, and VXLAN?
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It's TCP vs. RPC All over Again
We’ve written previously about the fact that the Internet seems to be missing a standard protocol for the request/response paradigm, with repeated attempts to force-fit TCP leading to inevitable mismatches. Sometimes we feel that we are the only people who think this way, with our networking
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Is it time to replace TCP in data centers?
One of my readers asked for my opinion about the provocative “It’s Time to Replace TCP in the Datacenter” article by prof. John Ousterhout. I started reading it, found too many things that didn’t make sense, and decided to ignore it as another attempt of a proverbial physicist solving hard problems in someone else’s…
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Email: Explained from first principles
Modern email is a patchwork of protocols and extensions. Here is one article to understand them all.
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The United States Frequency Allocation Chart
This crazy, beautiful chart illustrates the incredible complexity of managing one of our nation’s most crucial – and invisible – national assets: the radio spectrum.