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Sudan woke up without Internet
Today, October 25, following political turmoil, Sudan woke up without Internet access.
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No U PNP
Previously on Deep Space Nine, we discussed (read: I complained about) the short life and quick death of DLNA. On the way, I mentioned DLNA's dependence on UPnP as an underlying autoconfiguration protocol. Let's talk a bit more about UPnP, because it's 1) an interesting protocol, 2) widely misunderstood, and 3)…
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PipeWire and fixing the Linux Video Capture stack
PipeWire has already made great strides forward in terms of improving the audio handling situation on Linux, but one of the original goals was to also bring along the video side of the house. In fact in the first few releases of Fedora Workstation where we shipped PipeWire we solely enabled it as a tool...
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Why Isn’t Telegram End-to-End Encrypted by Default (2017)
telegra.ph/why-isnt-telegram-end-to-end-encrypted-by-default-08-142021127 points145 commentscited by 11Security & Privacy details
I've been getting this question more often this year. It's based on the wrong assumption that some other popular messaging apps such as WhatsApp are "end-to-end encrypted by default", while Telegram is not. This post is intended to disprove this myth that has been so carefully crafted by Facebook/WhatsApp marketing…
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Was the NE2000 really that bad?
Over the last few months I have been on and off digging into the history of early PC networking products, especially Ethernet-based ones. In that context, it is impossible to miss the classic NE2000 adapter with all its offshoots and clones. Especially in the Linux community, the NE2000 seems to have had rather bad…
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Setting up a Raspberry Pi with 2 Network Interfaces as a simple router
I needed a very basic 'Internet sharing' router setup with one of my Raspberry Pis, and I thought I'd document the setup process here in case I need to do it again. I should note that for more complex use cases, or where you really need to worry about security and performance, you should use something like OpenWRT…
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The utilization of 44/8: the reason I mapped IPv4 and IPv6
In the early days, when the Internet was just beginning, back in 1981, radio amateurs were allocated, by what is now known as IANA , an IPv4 block for usage and experimentation by all members of this hobby, internationally. This block was 44.0.0.0/8, which is a huge amount of address space by today’s standards, but…
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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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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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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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Using the FreeBSD Rack TCP Stack
Explore FreeBSD's RACK TCP Stack, a dynamic pluggable TCP stack introduced in version 12, offering advanced flexibility for handling TCP flows.
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How not to migrate an email domain
I did the thing! I moved IntroCave.com over to IntroMaker.com. It's still a bit of a work in progress ( some thoughts here ), but I decided to break this out as a separate post.
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(All) DNS Resource Records
Just how many weird Resource Records can you stuff into a zone file? And what do these weird RRs actually return?
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Faster Linux 2.5G Networking with Realtek RTL8125B
Since the Raspberry Pi Compute Module 4 was introduced last year, I've been testing a variety of PCI Express NICs with it. One of the main types of NIC I'm interested in is cheap 2.5 Gigabit Ethernet adapters. 2.5 Gigabits is about the highest reasonable bandwidth you can get through the PCI Express Gen 2.0 x1 lane on…
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Why updating DNS is slow
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What happened on the Internet during the Facebook outage
Today, we're going to show you how the Facebook and affiliate sites downtime affected us, and what we can see in our data.
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Splitting the Ping
Ping is one of the fundamental pillars of networking. It’s simple, universally supported, and is normally one of the few things that is shipped with all network stacks.
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VNC client running on a coffee machine
Published: 08-04-2021 | Author: Remy van Elst | Text only version of this article
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Strange domain names that developers bought
Not every domain is serious business. Here's a few of the fun ones that we at Stack Overflow owned, as well as those owned by our community.
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Linux implementation of Homa, a protocol to replace TCP for low-latency RPC
Programming note: I will be taking a several week break from writing paper reviews for the summer. When we come back, I will be finishing off the papers from Usenix ATC and OSDI , then moving on to the great upcoming conferences (my non-exhaustive list is here ). As always, feel free to reach out on Twitter with…
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Trans-Pacific Cable Chaos, Shifting Asian Hubs
It’s been a year since the U.S. denied a cable license to the PLCN, creating a chain reaction that disrupted the trans-Pacific submarine cable market.
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Linux Networking: MAC VLANs and Virtual Ethernets
This website is for sale! pocketnix.org is your first and best source for information about pocketnix. Here you will also find topics relating to issues of general interest. We hope you find what you are looking for!
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BGP in a Nutshell
PhD student at University of Texas at Austin 🤘. Doing systems for ML.
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Helping to secure internet routing
The internet works reliably, in large part, on the basis of a key technology called Border Gateway Protocol (BGP). BGP is a means by which all junction points on the internet (routers) communicate with each other to dynamically establish the correct (and correctly weighted) paths that network packets should follow to…
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Go HTTPS Servers with TLS
This post is a basic introduction to running HTTPS servers and clients in Go using TLS. It assumes some familiarity with public-key crypto. Feel free to check out my earlier posts about RSA and the Diffie-Hellman Key Exchange ; TLS uses the elliptic-curve version of Diffie-Hellman. I won't be covering how the protocol…