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Topics /
Networking & Internet
The most popular blog posts about networking & internet on Hacker News. 3,019 posts.
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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
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NextDNS Joins Firefox’s Trusted Recursive Resolver
NextDNS Joins Firefox’s Trusted Recursive Resolver Program Committing to Data Retention and Transparency Requirements that Respect User Privacy Firefox a
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The German Problem with Tor
EAs of the 5th July 2020, there are 1357 Tor bridges available for users in countries who censor the Tor network to use. Having just over 1,000 IP addresses is not a lot for such a big privacy network as Tor is, especially considering that the number of Tor Bridges peaked at 4,227 on the 4th January 2015. That means…