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DNS doesn't “propagate”
DNS "propagation" is actually caches expiring
New
The latest blog posts to take off on Hacker News. 3,021 posts.
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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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Simple Raspberry Pi Powered SMS Gateway
Personal Blog of Christian Haschek
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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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ADSL works over wet string (2017)
Broadband services are a wonderful innovation of our time, using multiple frequency bands (hence the name) to carry signals over wires (us...
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NIST is broadcasting a test signal on minute 8 of the hour on WWV and 48 on WWVH
Listen to WWV announcement recorded 0008UTC 11/4/2021 from WWV 10MHz broadcast, receiver IC-7300 13.7km from the station.
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German Court Rules Against Internet Security Non-Profit Quad9
A public and free DNS service for a better security and privacy
1209
Reading NFS at 25GB/s using FIO and libnfs
My current employer does a lot of really cool systems work that’s covered by NDAs. I recently did some work to integrate a cool open source tool into our workflow. Felt it deserved a blog post. NFS Testing Requires Parallelism. I work for Pure Storage. One of the products we make is a scale-out NFS1 (and…
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The case of the recursive resolvers: What happened during Slack’s DNSSEC rollout
On September 30th 2021, Slack had an outage that impacted less than 1% of our online user base, and lasted for 24 hours. This outage was the result of our attempt to enable DNSSEC — an extension intended to secure the DNS protocol, required for FedRAMP Moderate — but which ultimately led to a series of…
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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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The internet is held together with spit and baling wire
A visualization of the Internet made using network routing data. Image: Barrett Lyon, opte.org.
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IPv6-only subnets and EC2 instances
In June 2021, we announced our continued commitment and innovation towards the enablement of IPv6 on AWS. Today, we take a monumental step forward with the ability to create an IPv6-only architecture on AWS. With this launch, Amazon Virtual Private Cloud (VPC) now allows you to create IPv6-only subnets in your…
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IRCv3 Spec round-up
IRCv3 Development Community
1215
XMPP, a comeback story
Everyone loves a comeback story. Can a 20 year old overlooked technology make a comeback as a completely decentralized, free, and scalable technology for the growing masses of people who value freedom and privacy?
1216
Briar 1.4 – Offline sharing, message transfer via SD cards and USB sticks
Press release The Briar Project released version 1.4 of its Android app today. This release adds a couple of new features, highlighted below. First of all, users can now share the app offline. Prior to this release, the only way to get the app was to to download it from the internet, which requires an internet…
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Sign arbitrary data with your SSH keys
ssh-keygen can sign and verify signatures, and it's way better than PGP
1219
Nuclear radiation used to transmit digital data wirelessly
Engineers have successfully transferred digitally encoded information wirelessly using nuclear radiation instead of conventional technology.
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I’m putting a WiFi router into a wall charger
Read the updated story here
1225
Wikivoyage has disappeared from DuckDuckGo
Update (2021-10-31): DuckDuckGo now includes results for Wikivoyage again, as do Bing and Yahoo. I have been planning a long due vacation and I was doing some research into the places I wanted to visit. My goto travel guide is Wikivoyage: it’s well organised, text-heavy (instead of slideshow-heavy alternatives) and…
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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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The communications systems at the US Central Command headquarters
A weblog about Signals Intelligence, Communications Security and top level telecommunications equipment
1229
Why not “Why not WireGuard?” (2020)
An article by Michael Tremer titled Why not WireGuard is sometimes shared in VPN discussions. Unfortunately that article contains several misconceptions and some out-of-date information that deserves to be addressed.
1230
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.