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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:
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,615 posts.
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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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The sad state of Linux Wi-Fi
I've been using 802.11 on Linux now for over a decade, and to be honest, it's still a pretty sad experience. It works well enough that I mostly don't care... but when I care, and try to dig deeper, it always ends up in the answer “this is just crap”.
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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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BPS is a GPS alternative that nobody's heard of
I came to the NAB (National Association of Broadcasters) show this year with my Dad to learn more about time in broadcast and live production. I was expecting to learn more about grandmaster clocks, AV sync, timing in protocols like Dante, Livewire, AES67, and more—and I have. But then on the first day here I found…
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Let websites framebust out of native apps
Back in 1996, the website TotalNews.com had a brilliantly evil idea. Why not make a single website that itself contained all the top American news websites, directly embedded within?
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Running a fake power plant on the internet for a month
There is a lot more on the internet than just social media and banking websites…
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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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SSH over HTTPS
Tl;DR: to pass SSH through HTTPS you need to tweak client and server sides as the following:
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HTTP: , FTP:, and Dict:?
I went for a spelunk through an ancient codebase a few weeks ago which contained a curious regex that I just couldn't grok. Copied to 📋⧉ {<((https?|ftp|dict|tel):[^\'">\s]+)>}i I'm familiar with HTTP and FTP. I worked in the mobile industry, so knew that tel:+44... could be used to launch a dialer. But DICT?!?!?! It…
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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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FastCGI: 30 years old and still the better protocol for reverse proxies
For FastCGI's 30th birthday, let's look at how it avoids the security problems inherent in HTTP reverse proxying
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Setting up a Pi Hole made my home network faster
Discover how a single Raspberry Pi can speed up your home network by acting as a DNS server. Learn the steps to set up Pi-hole and enjoy faster, more secure internet today!
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What Apple and Google are doing to push notifications
I wrote recently about what Google, Yahoo, Microsoft, and Apple are doing to your email: how four providers stopped being transport layers and turned into active intermediaries between brands and their customers, parsing, ranking, summarising, and increasingly answering on the recipient's behalf.
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AirPlay and Touch Bar = Network Disaster
Mnpn's website and blog containing projects and other information.
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Running a Tor Exit Node for Fun and E-mails
The Tor Project is a non-profit organization in the United States that created Tor, The Onion Router, a free software that creates an open network of volunteers which helps people anonymize their traffic by routing it through three or more other computers before it reaches its final destination.
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Tor is a great sysadmin tool (2020)
Using Tor to aid various system administration tasks, including checking firewall rules, bypassing internal network restrictions and connecting to remote systems that are behind NAT/CGNAT.
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MarkMonitor left 60k domains for the taking
Thanks to Nagli and d0xing for helping figure out what was happening with this issue.
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The dead Internet is not a theory anymore
Bots have taken over
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You might not need WebSockets
Websockets are powerful tools that have become a fan-favorite for building realtime applications, but you might be using them for all the wrong reasons. Let's explore the pitfalls of websockets and how we can use plain old HTTP to get the same job done.
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ADSL works over wet string (2017)
Broadband services are a wonderful innovation of our time, using multiple frequency bands (hence the name) to carry signals over wires (us...
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Bye CUPS: Printing with Netcat
Turns out printing doesn't have to be hard
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Where it's at://
From handles to hosting.
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ProtonMail Rewrites Your Emails
I switched to ProtonMail a few years back after getting fed up with Google. It’s been mostly acceptable, but a few months ago the Android client started mangling emails – if I hit “send” too soon, it would send out only part of what I’d typed; I had to wait 10 seconds or so after I finished typing before hitting send…