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Lockheed is now tracking phones and walkie-talkies from space
Space-based phone location-tracking firm HawkEye 360 announced its partnership with U.S. weapons manufacturer Lockheed Martin this morning. The UAE military is allegedly a "strong" customer.
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Mitigating the Hetzner/Linode XMPP.ru MitM interception incident
(If you just want some recommendations for what to do, skip down to the Recommendations section below .)
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IRC is the only viable chat protocol (2022)
An article on why IRC is still the only chat protocol worth using, and a positive look at the surprisingly autistic-friendly Microsoft Comic Chat IRC client.
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Still Love Telnet
How to use the telnet command on the bash command line to debug network problems.
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Splitting the Web
Splitting the Web par Ploum - Lionel Dricot.
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How does Linux NAT a ping?
A few months ago, I found myself wondering how a command like ping 1.1.1.1 works from within a private network. In most private networks, multiple hosts connect to the Internet through a router. For IPv4, the router performs network address translation (NAT) by rewriting the original host’s source address to the…
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A Visual Guide to SSH Tunnels: Local and Remote Port Forwarding
SSH port forwarding explained in a clean and visual way. How to use local and remote port forwarding. What sshd settings may need to be adjusted. How to memorize the right flags.
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Building a Personal VoIP System
Take control of your telephony with Asterisk!
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AWS networking concepts in a diagram
Before March 2023 I couldn’t for the life of me understand what was going on in the AWS VPC dashboard. I mean, look at the length of the scrolling bar on the left-hand panel! So, with the goa…
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I spent a week without IPv4 to understand IPv6 transition mechanisms
The time has come to talk about something uncomfortable to a lot of you. You’ve been using legacy methods for far too long. It’s time to move to IPv6. But, of course, there’s a lot more to IPv6 than ‘just’ switching everything over. A lot of systems in the world still haven’t…
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The internet wants to be fragmented
Throwing the whole world into a single room together doesn't work.
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Using HDMI radio interference for high-speed data transfer
A blog about signals, programming, music, and other stuff.
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AWS Customers Cannot Escape IPv4
AWS will charge for IPv4 addresses but its IPv6 support lacks severely
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The United States Frequency Allocation Chart
This crazy, beautiful chart illustrates the incredible complexity of managing one of our nation’s most crucial – and invisible – national assets: the radio spectrum.
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Grave flaws in BGP Error handling
Border Gateway Protocol is the de facto protocol that directs routing decisions between different ISP networks, and is generally known as the “glue” that holds the internet together. It’s safe to say that the internet we currently know would not function without working BGP implementations.
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Stop trying to make social networks succeed
Stop Trying to Make Social Networks Succeed par Ploum - Lionel Dricot.
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There’s more than one way to write an IP address (2019)
There's more than one way to write an IP address: decimal, hex, octal, overflowed octets and omitted zeroes all resolve to the same host. A fun trick to mess …
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AWS IPv4 Estate Now Worth $4.5B
AWS grew its IPv4 estate with an additional 27 million IP addresses to now owning 128 Million IPv4 addresses. At a value of $35 per IPv4 address, the total value of AWS’ IPv4 estate is ~4.5 Billion dollars. An increase of $2 billion
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Mastodon is doomed?
Mastodon won't be the next Twitter, and it's not because of Bluesky. The ideals and execution won't scale.
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Noticing when an app is only hosted in us-east-1
Using latency measurements to infer when a globally used application is served only from us-east-1.
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Does Cloudflare’s 1.1.1.1 DNS Block Archive.is? (2019)
Short answer: no. Quite the opposite, actually — Archive.is is intentionally blocking 1.1.1.1 users. Here's why.
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ssh whoami.filippo.io
I updated the whoami.filippo.io dataset! I explain how it works, and how I fetched the new data.
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The Gemini protocol seen by this HTTP client person
There is again a pull-request submitted to the curl project to bring support for the Gemini protocol. It seems like a worthwhile effort that I support, even if it is also a lot of work involved and it might take some time before it reaches the state in which it can be merged. A previous … Continue reading The Gemini…
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Gmail is killing independent email
Email is an open system, right? Anyone can send a message to anyone... unless they are on Gmail! School Interviews uses two email servers t...
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Why 56k is the fastest dial up modem speed
10stripe is a collection of computer and technology information, providing answers to common questions and concerns.