To @AndrewHart: “Our app is shit and we know it’s shit”. My life changed forever when a senior exec from one of the world’s largest retailers messaged me on Twitter. This was back in 2017. My outdoor AR navigation demos had just gone viral, and my new open-source project for...
One of the most significant single advancements in telecommunications technology was the development of microwave radio. Essentially an evolution of radar, the middle of the Second World War saw the first practical microwave telephone system. By the time Japan surrendered, AT&T had largely abandoned their plan to…
Don't pick random subnets to avoid IP address conflicts on foreign networks, use VRFs!
Mike Kohn's music, software, and electronics projects.
Post describing how I've configured pihole to return different results to clients on my tailnet than those on the LAN.
Think about it for a second: could the internet exist without standards and protocols? Of course not! Computers need shared rules and agreements to communicate with one another. Even human languages, like English, work much the same way. They function as a kind of communication protocol because we’ve all agreed on…
The Matrix.org network has great potential, but after years of dealing with glitches, slow performance, poor UX, and one too many failures, I’m done with it.
Recently, I covered some of the history of Ethernet's tenuous relationship with installed telephone cabling . That article focused on the earlier and more business-oriented products, but many of you probably know that there have been a number of efforts to install IP networking over installed telephone wiring in a…
You are seeing this because the administrator of this website has set up Anubis to protect the server against the scourge of AI companies aggressively scraping websites . This can and does cause downtime for the websites, which makes their resources inaccessible for everyone.
A quick look at how the movie The Exorcist from 1973 has links to the late great Alan Turing via Mike Oldfield’s album Tubular Bells, Scotland and Amateur Radio. It’s Halloween so figured why not throw some horror in the mix.
First off, no, your ANT+ devices aren’t goin...
Introduction Google has a long history of performing networking research, making changes, and pushing those changes to the entire internet. In 2011, they published one of my favorite papers, which described their decision to increase the TCP initial congestion window from 1 to 10 on their entire infrastructure. This…
In this article I want to document my journey implementing fast TCP fingerprinting in a golang webserver, using eBPF.
What if something can't be found through Google Search? Does it still exist? That question I have to ask myself when I found that a blogpost...
Have you ever asked yourself which protocols get used when downloading pictures from the Perseverance Mars rover to Earth? I hadn’t thought about that either, until I came across an intriguing message on the internet, back in April 2024: I’m looking for someone knowledgeable of quic/quinn to help us out for our deep…
On a QWERTY keyboard
tl;dr: I set up an open source Time Pi project to build a stratum 1 PTP and NTP timeserver using a Raspberry Pi. Time is important to modern society, and most of us have a clock on our wrist that's more accurate than at any time in human history. But highly precise time is important in many industries, especially…
An intuitive and ground-up introduction to I/Q signals. Learn the foundational concepts through clear geometric analogy perfect for beginners
Using QUIC to achieve everything needed for NAT traversal, from address discovery to proxying UDP
