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The best ping story I've ever heard
Yes, it's true! I'm the author of ping for UNIX. Ping is a little thousand-line hack that I wrote in an evening which practically everyone seems to know about. :-)
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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How to read an RFC
For better or worse, Requests for Comments (RFCs) are how we specify many protocols on the Internet. These documents are alternatively treated as holy texts by developers who parse them for hidden meanings, then shunned as irrelevant because they can’t be understood. This often leads to frustration and – more…
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SOCKMAP – TCP splicing of the future
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Using SSH_config Match to connect to a host using multiple IP or Hostnames
My main computer is a MacBook Pro from 2017, but I have some servers laying around and one other laptop connected at home with ArchLinux installed that I use mainly for development. I connect to it remotely either directly using a SSH/Mosh + Tmux + Emacs/Vim combination, or using the pretty convenient VSCode Remote…
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thunderbolt-ibverbs: We have InfiniBand at home
Linux kernel experiments implementing IB verbs over consumer Thunderbolt/USB4 hardware to give cheap mini-PCs high-performance RDMA suitable for cluster inference.
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HFT in my Backyard – IV
[Update, November 18, 2014: check episode 2 with the Latent answer to this post] There’s a thin grey line Between the black and white It’s evidently hard to find at night Depeche Mode, …
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High-Performance Packet Filtering with Pflua
wingolog: article: high-performance packet filtering with pflua
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Self hosted email continues to steeply decline
Ten years of DNS measurements reveal three trends across the Internet's most popular domains: email continues to consolidate around two providers, DMARC enforcement has hit a plateau, and a surprisingly large long tail of infrastructure defies easy classification.
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Mastodon WTF timeline (2017)
In the last few days I've been fortunate to witness an interesting chapter in the Internet's history, and I'm trying to compile a timeline of what has happened while the memories are still reasonably fresh. This is incomplete and a work in progress; I'll be updating it, and n...
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Anyone on the Internet Can Ring Your Doorbell
Behind a cheap Temu doorbell sits an IoT backend where device IDs are sequential and requests are forgeable with a string baked into every firmware. One signed call lifts any device's persistent password and lets anyone on the Internet hijack the next live call.
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Talking to Postgres Through Java 16 Unix-Domain Socket Channels
Reading a blog post about what’s coming up in JDK 16 recently, I learned that one of the new features is support for Unix domain sockets (JEP 380). Before Java 16, you’d have to resort to 3rd party …
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AWS Is Now Available from a Local Zone in Los Angeles
AWS customers are always asking for more features, more bandwidth, more compute power, and more memory, while also asking for lower latency and lower prices. We do our best to meet these competing demands: we launch new EC2 instance types, EBS volume types, and S3 storage classes at a rapid pace, and we also reduce […]
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Netflix and Spotify on a Raspberry Pi 4 with Chromium and Widevine
As of 3-30-2020, if you want the “paste-one-line-it-just-works” go to: vpetkov.net/2020/03/30/raspberry-pi-netflix-one-line-easy-install-along-with-hulu-amazon-prime-disney-plus-hbo-spotify-pandora-and-many-others/ ^^^ Please use the post linked above for my “one-line it just works” install ^^^ (Ignore everything…
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Oblivious DNS: Plugging the Internet’s Biggest Privacy Hole
by Annie Edmundson, Paul Schmitt, Nick Feamster The recent news that Cloudflare is deploying their own DNS recursive resolver has once again raised hopes that users will enjoy improved privacy, since they can send DNS traffic encrypted to Cloudflare, rather than to their ISP. In this post, we explain why this approach…
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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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Modernizing Transport Security
Posted by David Benjamin, Chrome networking *Updated on October 17, 2018 with details about changes in other browsers TLS (Transport Lay...
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Nuvem, a subsea cable to connect Portugal, Bermuda, and the U.S.
The Nuvem submarine cable will connect Portugal, Bermuda and South Carolina, and will be Bermuda’s first transatlantic fiber optic route.
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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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How Does NTP (Network Time Protocol) Work?
The Network Time Protocol (NTP) is a system for synchronizing the clocks of hosts and clients across the Internet. NTP is a protocol intended to synchronize all computers participating in the network to within a few milliseconds of Coordinated Universal Time (UTC). The core of the protocol is NTP’s clock discipline…
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VideoLAN has issued a legal notice to Indian Gov for banning their website
VideoLAN’s URL from which users download the VLC Media Player appears to have been banned by the DoT in India since March 2021. This was done without any prior notice, or affording VideoLAN an opportunity of hearing, which is contrary to the Indian law.
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OpenSSL Key Recovery Attack on DH small subgroups (CVE-2016-0701)
Usual Mandatory Disclaimer: IANAC (I am not a cryptographer) so I might likely end up writing a bunch of mistakes in this blog post... ...
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Re-thinking electronic mail
There are many problems with the existing Internet email system, such as spam, scam, surveillance, insecurity, centralization, and complexity. The problems are starting to outweigh the benefits of the system. Fixing the problems by evolving the current system seems overwhelmingly difficult. This essay examines some…
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Is regulated BGP security coming?
What impact would regulating BGP routing security have on the global Internet?