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The most popular blog posts about networking & internet on Hacker News. 1,615 posts.
I think I've mentioned occasionally that various devices, mostly cellular modems, just use the Hayes or AT command set. Recently I obtained a GPS tracking device (made by Queclink) that is, interestingly, fully configured via the Hayes command set. It's an example of a somewhat newer trend of converging the…
While hackers do good most of the time, we occasionally do evil and play a prank. The ESP8266, unlike JSON , allows me to do evil. Thus, I programmed the microcontroller for an evil purpose: slow down the WiFi.
Things that interest me
This post is going to be a bit different from my usual posts. It’s still about computers, but it’s about a different type of computer: the computer modules in my 2009 Dodge Ram 1500 pickup. Vehicles these days have lots of computers in them. I’ve historically been afraid to mess too much with them in fear of screwing…
The militia-patriot movement in America has embraced radio communications in a big way. Within the past decade, the methods and communications gear have evolved from basic CB or FRS radios, to now …
Firefox 37 brings more encryption to the web through opportunistic encryption of some http:// based resources. It will be released the week ...
First off, no, your ANT+ devices aren’t goin...
We locate web content using special addresses called URLs. We are all familiar with addresses like https://google.com. Sometimes, URLs can get long and they can become difficult to read. Thus, we might be tempted to format them like so in HTML using newline and tab characters, like so: <a…
Investigating onboard flight entertainment APIs, flight telemetry, and Widevine-protected media.
I really love ping! It is easy to use and directly reveals whether the network works or not. Refer to Why Ping is no Security Flaw! (But your Friend) and Advanced Tracerouting . At least outgoing pings (from trust to untrust) should be allowed without any security concerns. However, many companies are denying these…
NOTE: malware is now using this as their User-agent. I haven't run a scan now for over two days. I'm running a scan right now of the I...
When you hear the term, you should picture an hourglass with M things on one side, N on the other, and an important concept in the middle.
I attended a TCP/IP Geeks Stockholm meetup yesterday and did a talk about HTTP/2. Below is the slide set, but as usual it might not be entirely self explanatory... HTTP/2 - for TCP/IP Geeks Stockholm from Daniel Stenberg
The objective for this project was to implement a UDP transmitter for use on the RP2040 that would consume zero CPU time. The system described on this webpage is implemented with 3 PIO state machines, 12 DMA channels, and 1 PWM channel. It generates an NLP, performs packet checksum calculations, and performs packet…
People often suggest that inline PGP signatures in e-mail are somehow more compatible or more acceptable than using PGP/MIME . This is a mistake. Inline PGP signatures are prone to several failure modes, up to and including undetectable message tampering.
PagerDuty went off very early in the morning, and our hero cursed his bad luck and received the phone call. He made PagerDuty repeat the message twice, but couldn’t understand the message. He pressed the number to acknowledge the incident. He opened the MacBook and found the slack message from the PagerDuty bot more…
ABSTRACT In May 2003, the University of Wisconsin - Madison found that it was the recipient of a continuous large scale flood of inbound Internet traffic destined for one of the campus' public Network Time Protocol (NTP) servers. The flood traffic rate was hundreds-of-thousands of packets-per-second, and hundreds of…
Counting almost 7,000 relays , the Tor network is one of the largest volunteer-run anonymity networks operating today. Most of the volunteers who operate these relays choose to remain anonymous, and little is known about how they set up or operate their relays. As a result, it is not clear if all relays correctly…
RFC 9518: Centralization, Decentralization, and Internet Standards has been published after more than two years of review, discussion, and revision.
I got into some interesting discussions about IPv6 on Twitter. Then someone asked if Android is getting DHCPv6 support in version 11 of the OS.
The hidden disconnects of ZeroMQ can be dangerous if you don’t write your application to work around them.
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…
Structured Text on the Internet before the World Wide Web
In this article I want to document my journey implementing fast TCP fingerprinting in a golang webserver, using eBPF.
I haven't written for a bit, in part because I am currently on vacation in Mexico. Well, here's a short piece about some interesting behavior I've noticed here.
Root election, port roles, proposals and agreements, topology changes: explore RSTP through simulations powered by MSTPD compiled to WebAssembly.
Federated applications have a few problems. And I really wish it weren’t the case, I love the idea and philosophy of these applications. But I can’t see them being mass adopted.
Let’s say you’re on a fresh machine. Maybe you’ve just started a new job or you’ve wiped your machine. You’re about to push some code you’ve written and you get this: $ git push The authenticity of host 'github.com (140.82.121.4)' can't be established. ED25519 key fingerprint is…
