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Nearby Connections 2.0: offline high bandwidth peer to peer device communication
News and insights on the Android platform, developer tools, and events.
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IPvlan overlay-free Kubernetes Networking in AWS
Lyft is pleased to announce the initial open source release of our IPvlan-based CNI networking stack for running Kubernetes at scale in…
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Broken packets: IP fragmentation is flawed
As opposed to the public telephone network, the internet has a Packet Switched design. But just how big can these packets be?
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Announcing DatHTTPD
Serve sites over Dat and HTTPS, with automatic certificate provision.
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Shutting down FTP services
Those of you who have been around for a while may remember a time when you used to be able to mount kernel.org directly as a partition on your system using NFS (or even SMB/CIFS). The Wayback Machine shows that this was still advertised some time in January 1998 , but was removed by the time the December 1998 copy was…
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Creating an Autonomous System for Fun and Profit
The thoughts and projects of an engineer who likes to convert solder, firmware, and wire into all sorts of different forms of entertainment.
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How much traffic do I get from North Korea anyway?
While the president of the United States and the leader of North Korea were/are currently beefing on Twitter about who should destroy the world first, North Korea was also causing me some personal frustration on data quality.
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Attack of the week: DUHK
Before we get started, fair warning: this is going to be a post about a fairly absurd (but non-trivial!) attack on cryptographic systems. But that’s ok, because it’s based on a fairly a…
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Fixing the Ethernet Board from a Vintage Xerox Alto
A Xerox Alto system on the East coast had Ethernet problems, so the owner sent me the Ethernet board to diagnose. (After restoring our Alto,...
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Building a legacy search engine for a legacy protocol
Most users who use the internet today, are mostly focused on three protocols, HTTP, TLS, and DNS.
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Cloudflare Reports Massive Slowdown in Network Level DDoS Attacks
News outlets and blogs will frequently compare DDoS attacks by the volume of traffic that a victim receives. Surely this makes some sense, right? The greater the volume of traffic a victim receives, the harder to mitigate an attack - right?
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Bringing up 802.11ac on FreeBSD
I've been chipping away at bringing up 802.11ac on FreeBSD. I've been meaning to write this post for a while, but you know, life got in the ...
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Blueborne – A new attack vector endangering major operating systems
Following the disclosure of the BlueBorne attack vector this past September, Armis discovered that critical Bluetooth vulnerabilities impact the Amazon Echo and Google Home.
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IPv4 route lookup on Linux
Linux uses an LPC-trie for looking up routes. It provides good performance with low memory use even with millions of routes.
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Why is my tcp not reliable? (2009)
This post is about an obscure corner of TCP network programming, a corner where almost everybody doesn’t quite get what is going on. I used to think I understood it, but found out last week that I didn’t.
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DASH playback of AV1 video in Firefox
Bitmovin and Mozilla, both members of the Alliance for Open Media (AOM), are partnering to bring AV1 playback with HTML5 to Firefox as the first browser to play AV1 MPEG-DASH/HLS ...
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How banks are getting around open banking and PSD2
Banks are scared. They’ve seen the rise of the new world of open APIs, apps and analytics and know that their organisations are not yet ready or fit to change to that world. What to do? Well, the easiest thing to do is to block access to the bank’s data. If third party FinTech firms...
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Improving on Tor .onion Address Usability
Hello again, this blog post is the second issue of the Cooking with Onions series which aims to...
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The story of the Slovak national top-level domain
The top level domain of Slovakia is operated by a private company which abuses its monopoly. In the Central Europe it is something unusual.
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Introducing HumbleNet: Cross-Platform Networking Library for the Browser
Announcing the release of HumbleNet, a project initiated at Humble Bundle in 2015 to port peer-to-peer multiplayer games, originally to asm.js and now to WebAssembly. The current open source version ...
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Https hurts users far away from the server
Welcome to my personal blog! I use it to share what I'm currently learning or thinking about, usually on topics related to technology, business, and health.
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Andromeda 2.1 reduces GCP’s intra-zone latency by 40%
The latest version of Andromeda reduces network latency between Compute Engine VMs by 40% over Andromeda 2.0 and by nearly a factor of 8 since we first launched Andromeda in 2014.
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Five years of IPv6: whither the next five?
There isn't one story to the IPv6 deployment timeline - it can be rapid or slow, bumpy or smooth - but it is 'up and to the right'.