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The most popular blog posts about networking & internet on Hacker News. 1,615 posts.
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…
The research roots of finding “optimal routing” networks trace back to the late 1970s. Mathematicians defined special kinds of networks called “expanders“. These are graphs with strong connectivity properties guaranteeing no subset of vertices can be isolated from the rest. In 1976, Leslie Valiant gave one of the…
I just removed myself from every OpenStack mailing list and meetup. I’m sure I’ll still use it, but I don’t see myself as part of that community any longer. When I was at DreamHost, I really felt like part of that community and that I could help make it better. However, in the three years since I’ve left DreamHost, I…
And lessons learnt
I’m calling time on DNSSEC. Last week, prompted by a change in my DNS hosting setup, I began removing it from the few personal zones I had signed. Then this Monday the .nz ccTLD experienced a multi-day availability incident triggered by the annual DNSSEC key rotation process. This incident broke several of my unsigned…
The Matrix.org network has great potential, but after years of dealing with glitches, slow performance, poor UX, and one too many failures, I’m done with it.
Since 2020, I've taken on a Steve Jobs alter-ego (on a very, very part time basis, and often for humor purposes ). The firs...
Two weeks ago I attended SIGCSE 2012 in Raleigh, NC. The plane on my return flight had Internet access through Gogo’s Inflight Internet. While I think it’s incredibly awesome that Internet access is readily available to those who travel by plane, I personally feel it is not worth …
Once you head away from the areas that are serviced by modern terrestrial cable infrastructure, the available digital communications options are somewhat limited. Some remote areas are served using High Frequency radio systems, using radio signals that bounce off the ionosphere to provide a long distance, but limited…
Following my previous post on rate limiting with GCRA, leaky buckets without the buckets , I reviewed my old notes on rate limiting for Exim . I thought I should do a new write-up of the ideas that I hope will be more broadly interesting.
: While I'm suspicious of all JIT-compiled languages, C# has always had a much better IL than java, even since version 1.0, making it easy...
Gigabit ethernet has been around for a long time, it’s so ubiquitous that there is a very strong chance that if you have a RJ-45 port on your computer, it’s going to be a gigabit ethernet network interface.
When you think about it, it really is one tangled, small cottage industry. Everybody knows everybody. Everybody knows what everybody is doing, and nobody talks. One of my informants. This is the f…
I shit you not – SPACEJUMP was a verb.
I've recently read about a couple of boycotts trying to call attention to Amazon's bad labor practices. The most recent of these boycotts hopes to lead a boycott on Amazon's induced buying holiday "Prime Day", in solidarity with striking workers in several fulfillment centers in Spain. I support anyone fighting for a…
What if the internet were public interest technology? Is that too wildly speculative? I think not. I am not talking about a utopian project here — a public interest internet would be a glorious imperfect mess and it would be far from problem-free. But while there is a lot of solid thinking about various digital issues…
FreeBSD 15 comes with a new bridging implementation which has native support for VLANs. They have also soft-deprecated the ability to have any layer 3 addresses on member interfaces which makes it behave like a real hardware switch. The net.link.bridge.member_ifaddrs sysctl controls this behavior and it will …
The PipeWire project is slowly getting popular as it matures. Its documentation is still relatively sparse but is gradually growing. However, it's always a good idea to have people from outside the project try to grasp and explain it to others in their own words, reiterating ideas, seeing them from their own…
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