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Analysis and reverse-engineering of the original Starlink router
Honestly, I love the design of this thing. It reminds me of something from the good old sci-fi.
New
The latest blog posts to take off on Hacker News. 1,615 posts.
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Useful Old Technologies: ASN.1 (2013)
Useful old technologies: ASN.1
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Running your own email is increasingly an artisanal choice, not a practical one
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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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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Hidden Networks in TP-Link Routers
I was debugging my WiFi settings this week when I noticed something strange. WiFi Analyzer was showing two hidden networks coming from my router, one for each frequency: 2.4GHz and 5GHz. Networks which I haven't configured and didn't appear in my router's admin interface. WTF?
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There oughta be a WiFi Game Boy cartridge
It took a while, but I finally managed to create my own Game Boy cartridge. With WiFi! At this point, it can only demo a simple telnet-style communication and access Wikipedia articles, but I am confident that I will showcase more in the future. For now, the interesting and surprisingly tricky part is how the thing…
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Mess with DNS
New tool: Mess with DNS!
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Coaxial Goes to War
Last time we perambulated on telephones, we discussed open-wire long-distance telephone carriers and touched on carriers intended for cables. Recall that, in the telephone industry, cable refers to an assembly of multiple copper twisted pairs (often hundreds) in a single jacket. There is a surprising amount of…
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DNS doesn't “propagate”
DNS "propagation" is actually caches expiring
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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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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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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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Sign arbitrary data with your SSH keys
ssh-keygen can sign and verify signatures, and it's way better than PGP
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I’m putting a WiFi router into a wall charger
Read the updated story here
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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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The communications systems at the US Central Command headquarters
A weblog about Signals Intelligence, Communications Security and top level telecommunications equipment
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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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Incenser, or how NSA and GCHQ are tapping internet cables (2014)
A weblog about Signals Intelligence, Communications Security and top level telecommunications equipment
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Hello IPv6: a minimal tutorial for IPv4 users
A short IPv6 tutorial, explaining the basics, primarily for home and small networks.
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