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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 3,021 posts.
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The shady world of IP leasing
The IPv4 "exhaustion" is not real. The addresses got hoarded and the market devolved into a wild sub-leasing economy where anyone can choose where their IPs appear from, who owns them on paper, and scrub them clean of any history.
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Acme, a brief history of one of the protocols which has changed the Internet
ACME, a brief history of one of the protocols which has changed the Internet Security Changelog 03 December 2025: article announced on Mastodon, LinkedIn and X. 03 December 2025: J.C. Jones published his reflections about 10 years of Let’s Encrypt. A must read! 03 December 2025: J.C. has also been kind enough to…
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O2 outage due to expired Ericsson certificate
Following network disturbances in a number of Ericsson’s (NASDAQ:ERIC) customer networks, Ericsson has taken immediate action to minimize impact and support the
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How Verizon's Advertising Header Works
Over the past couple of days, there’s been an outpouring of concern about Verizon’s advertising practices. Verizon Wireless is injecting a unique identifier into web requests, as data transits the network. On my phone, for example, here’s the extra HTTP header. 1
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WPA3 Wifi Security Protocol Announced
New Wi-Fi® security features available in 2018Las Vegas, NV – January 8, 2018 – Wi-Fi Alliance® introduces enhancements and new features for Wi-Fi Protected Access®, the essential family of Wi-Fi CERTIFIED™ security technologies for more than a decade. Wi-Fi Alliance is launching configuration, authentication, and…
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ARIN Public Incident Report – 4.10 Misissuance Error
Executive Summary On 2 December 2025, an IPv4 block 23.150.164.0/24, correctly allocated to the Original Customer, was inadvertently removed and reissued to the …
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The Social Smolnet
The Social Smolnet par Ploum - Lionel Dricot.
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Bye-Bye Mastodon, our account on Fosstodon.org was deleted yesterday
We discovered the Mastodon peer to peer social network in February 2019 from a customer suggestion and we loved it. The idea of having a decentralized social network, not dependent on one source is…
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Universal DNSSEC: Secure DNS for Every Domain
CloudFlare launched just five years ago with the goal of building a better Internet. That’s why we are excited to announce that beginning today, anyone on CloudFlare can secure their traffic with DNSSEC in just one simple step.
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Why Not WireGuard
The latest thing that is getting a lot of attention is WireGuard - the new shooting star in terms of VPN. But is it as great as it sounds? I would like to discuss some thoughts, have a look at the implementation and tell you why WireGuard is not a solution that will replace IPsec or OpenVPN.
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Sufficient Decentralization for Social Networks
A design pattern to reduce centralized control and change incentives in social networks.
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Products vs. Protocols: What Signal got right
There is a significant difference between developing and promoting a protocol (such as XMPP) and a product (such as Signal). Both approaches have their advantages and disadvantages. This post details how and why Snikket aims to strike a balance between the two.
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ANSI escape codes (2019)
My team writes a lot of command line tools, and we like to assume that people aren’t using a literal VT100 (meaning: we liberally use colours, italics, and basically every other terminal feature available to us). This tends to result in strings in our code that look a little like this:
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Using Gmail with Mutt
A tutorial on using gmail with mutt, a console-based email client, along with some advanced concepts such as encrypting your account password and sending emails from a different <code>From</code> address.
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RSS Autodiscovery (2006)
RSS autodiscovery is a technique that makes it possible for browsers and other software to automatically find a site's RSS feed, whether it's in RSS 1.0 or RSS 2.0 format.
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Review: A Dive into Mikrotik's Weird SmartNIC (2022)
an addendum has been posted, read it here 2023/12/02 - Hello, Hacker News! Check out these pictures of my cat: https://emma.pet Back in February, Mikrotik announced the CCR2004-1G-2XS-PCIe, a peculiar 25gbps NIC. They’ve thrown an entire router into a PCIe NIC. But why? Wait, why? Mikrotik’s product listing has…
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Wi-Wi is wireless time sync at 1 nanosecond
At NAB, I found a demo of Wi-Wi STAMP, a wireless time synchronization protocol that came out of Japan's NICT. Wi-Wi stands for Wireless 2Way interferometry, and it uses the 900 MHz band for picosecond-level time sync, and mm-level distance accuracy, in a tiny box, currently the size of a smartphone. The system is…
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Dynamic visualization of your WiFi signal
Discover the latest in networking and IT innovation. Stay updated with product launches, expert insights, and tutorials from UniFi’s official blog.
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OpenBSC: 3G Voice Works
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Hacking Ethernet out of Fibre Channel cards
This story, like another in the past , started as an eBay purchase that I would soon regret. I was scrolling through my favorite eBay supplier when I found a listing titled Job Lot Of Roughly 350 Various Network Cards . This of course piqued my interest. Some close photo inspection identified a whole load of cards in…
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Filtering millions of packets per second on commodity NICs
In a previous post we discussed the performance limitations of the Linux kernel network stack. We detailed the available kernel bypass techniques allowing user space programs to receive packets with high throughput.
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What I learned from making a DNS client in Rust
A lot about sockets, syscalls and bits
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Extracting TLS keys from an unwilling application (2020)
I want to be able to inspect the traffic of programs running on my computer. I don’t really trust those programs and ideally I’d like to put nearly all of them into a high security jail. One of those programs is Oculus software. There are a few reasons why I want to be cautious about Oculus software.
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eSIM is altering how consumers interact with operators
While eSIM adoption in the mobile market has been arriving for some time, Apple’s move to make