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The Agent2Agent Protocol (A2A)
Explore A2A, Google's new open protocol empowering developers to build interoperable AI solutions.
Topics /
Networking & Internet
The most popular blog posts about networking & internet on Hacker News. 223 posts.
32
OpenSSH Post-Quantum Cryptography
OpenSSH post quantum cryptography
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Simple trick to increase coverage: Lying to users about signal strength
Poking around in Android the other day I found this nugget in Carrier Config manager ; a flag (KEY_INFLATE_SIGNAL_STRENGTH_BOOL) to always report the signal strength to the user as one bar higher than it really is.
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Geedge and MESA leak: Analyzing the great firewall’s largest document leak
The Great Firewall of China (GFW) experienced the largest leak of internal documents in its history on Thursday September 11, 2025. Over 500 GB of source code, work logs, and internal communication records were leaked, revealing details of the GFW's research, development, and operations.
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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…
36
HTTP/3 is everywhere but nowhere
HTTP/3 has been in development since at least 2016, while QUIC (the protocol beneath it) was first introduced by Google way back in 2013. Both are now...
37
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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The Web Is Broken – Botnet Part 2
I guess you have all heard about the growing problem of AI companies trying to aggressively collect whatever data they can get their hands on to train their models. This has caused an explosive surge in web crawlers relentlessly hitting servers big and small. But who runs these crawlers? Turns out — it could be you!
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MCP overlooks hard-won lessons from distributed systems
Fool me once, shame on you; fool me twice, shame on me.
41
How NAT Traversal Works (2020)
Learn how NAT traversal works, how Tailscale can get through and securely connect your devices directly to each other.
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How the “Kim” dump exposed North Korea's credential theft playbook
A rare and revealing breach attributed to a North Korean-affiliated actor, known only as “Kim” as named by the hackers who dumped the data, has delivered a new insight into Kimsuky (APT43) tactics, techniques, and infrastructure. This actor's operational profile showcases credential-focused intrusions targeting South…
43
Using eSIMs with devices that only have a physical SIM slot via a 9eSIM SIM car
Do you have a phone, tablet, or laptop (or, well, any device…) which will only take a physical SIM, but with which you’d like to use eSIMs?
44
Ubiquiti launches UniFi OS Server for self-hosting
Ubiquiti just released UniFi OS Server in Early Access, allowing you to self-host the complete UniFi network stack on your own hardware. Initially, it will support UniFi Network and Innerspace. Besides UniFi Network and InnerSpace,
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JMAP for Calendars, Contacts and Files Now in Stalwart
After four years of development, we’re thrilled to announce a major milestone in the evolution of Stalwart — the full implementation of JMAP for Calendars, Contacts, File Storage, and Sharing. With...
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UniFi 5G
Discover the U5G Max and UniFi’s next generation 5G lineup featuring effortless setup, ultra fast speeds, rugged outdoor options, and advanced UniFi integration for unmatched performance.
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Tailscale Peer Relays
Tailscale Peer Relays provide predictable, performant access, entirely within your own tailnet.
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How to modify Starlink Mini to run without the built-in WiFi router
The Starlink Mini terminal is designed as a compact, all-in-one solution with an integrated Wi-Fi router. While this design is ideal for typical consumer use, certain applications—such as custom networking setups, embedded installations, or power-constrained environments—may benefit from removing the internal router…
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TCP, the workhorse of the internet
What is TCP? This post is an exploration of TCP, the workhorse of the internet. This deep dive includes detailed examples and a step-by-step walkthrough. A simple TCP explanation.
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RuBee
I have at least a few readers for which the sound of a man's voice saying "government cell phone detected" will elicit a palpable reaction. In Department of Energy facilities across the country, incidences of employees accidentally carrying phones into secure areas are reduced through a sort of automated nagging. A…
51
O2 VoLTE: locating any customer with a phone call
Privacy is dead: For multiple months, any O2 customer has had their location exposed to call initiators without their knowledge.
52
Get the location of the ISS using DNS
I love DNS esoterica. Weird little things that you can shove in the global directory to be distributed around the world instantly(ish). Domain names, like www.example.com usually resolve to servers. As much as we think of "the cloud" as being some intangible morass of ethereal Turing-machines floating in probability…
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BGP handling bug causes widespread internet routing instability
At 7AM (UTC) on Tuesday May 20th 2025 a BGP message was propagated that triggered surprising (to many) behaviours with two major BGP implementations that are often used for carrying internet traffic.
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NIST was 5 μs off UTC after last week's power cut
If you were 5 microseconds late today, blame it on NIST. Their facility in Boulder Colorado just had its power cut for multiple days. After a backup generator failed, their main ensemble clock lost track of UTC, or Universal Time Coordinated. But even if you used the NTP timing servers they run, they were never off by…
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There isn't much point to HTTP/2 past the load balancer
I want to write a post about Pitchfork, explaining where it comes from, why it is like it is, and how I see its future. But before I can get to that, I think I need to share my mental model on a few things, in this case, HTTP/2.
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Tangled, a Git collaboration platform built on atproto
A Git collaboration platform, built on AT Protocol
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What went wrong with wireless USB
(Hat tip to the late Bill Strauss and The Capitol Steps' Lirty Dies.) A few moons ago I was thinking of ways to take my Palm OS Fossil Wr...
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Deliberate Internet Shutdowns
For two days in September, Afghanistan had no internet. No satellite failed; no cable was cut. This was a deliberate outage, mandated by the Taliban government. It followed a more localized shutdown two weeks prior, reportedly instituted “to prevent immoral activities.” No additional explanation was given. The timing…
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Akamai to shut down its CDN operations in China
Akamai provides a global CDN that serves visitors inside and outside of China via the Akamai global network and strategic in-country partners.
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The Beauty of Having a Pi-Hole (2024)
Why Pi-hole, the Raspberry Pi DNS sinkhole, is worth running at home to block trackers, ads, and analytics endpoints across every device on the network.