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Dear Linux, Privileged Ports Must Die
Privileged ports were a security feature in the days of dumb terminals, in the age of the World Wide Web, they are a security vulnerability.
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The latest blog posts to take off on Hacker News. 282 posts.
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Royal Caribbean to use SpaceX's Starlink to provide internet onboard their fleet
Stay up to date and informed on all Royal Caribbean Cruises news with our most recent press releases.
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Large scale Internet SSH brute force attacks seem to have stopped here
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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An Introduction to PipeWire
This blog post is the first part of a series of 3 articles related to the PipeWire project and its usage in embedded Linux systems.
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Amazon, Verizon found using IPv4 240/4 addresses
In this article we use data from RIPE Atlas probes to investigate the usage of 240/4, a block of IPv4 addresses 'reserved for future use', formally known as Class E in the wild.
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YouTube disrupted in Pakistan as former PM Khan streams speech
NetBlocks metrics confirm the disruption of YouTube on multiple internet providers in Pakistan on Sunday 21 August 2022. The disruption comes as former Prime Minister Imran Khan makes a live ...
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Solving my truck’s TPMS sensor problem with the help of an RTL-SDR dongle
This post is going to be a bit different from my usual posts. It’s still about computers, but it’s about a different type of computer: the computer modules in my 2009 Dodge Ram 1500 pickup. Vehicles these days have lots of computers in them. I’ve historically been afraid to mess too much with them in fear of screwing…
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“I survived the TCP transition” (2013)
This year we invited Vint Cerf to tell the story.
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Resolving an unusual WiFi issue
Late last year, I started experiencing some unusual intermittent connection issues on my Desktop. In general, I had a stable connection with average latency; however, at (seemingly) random times throughout the week, I would start experiencing sudden 2000ms+ latency spikes every couple of seconds.
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Removing HTTP/2 Server Push from Chrome
HTTP/2 Server Push will be disabled by default in Chrome 106
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Using SSH_config Match to connect to a host using multiple IP or Hostnames
My main computer is a MacBook Pro from 2017, but I have some servers laying around and one other laptop connected at home with ArchLinux installed that I use mainly for development. I connect to it remotely either directly using a SSH/Mosh + Tmux + Emacs/Vim combination, or using the pretty convenient VSCode Remote…
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SSH tips and tricks
Since I joined Charm, I’ve been working and learning more about SSH, and I thought I would share a few quick tips and tricks with you.
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PGPP (Pretty Good Phone Privacy) Beta Launch
We are excited to announce that PGPP (Pretty Good Phone Privacy) is now in Beta.
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From Oscilloscope to Wireshark: A UDP Story
Like many of you, I've got hardware on my desk that's sending UDP packets, and the time has come to take a closer look at them.
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IPFS and Their Gateways
The InterPlanetary File System (IPFS) is according to the Wikipedia description: "a protocol, hypermedia and file sharing peer-to-peer network for storing and sharing data in a distributed file system.". It works a little like bittorrent and you typically access content on it using a very long hash in an ipfs:// URL…
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Let websites framebust out of native apps
Back in 1996, the website TotalNews.com had a brilliantly evil idea. Why not make a single website that itself contained all the top American news websites, directly embedded within?
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The mechanics of a sophisticated phishing scam and how we stopped it
Yesterday, August 8, 2022, Twilio shared that they’d been compromised by a targeted phishing attack. Around the same time as Twilio was attacked, we saw an attack with very similar characteristics also targeting Cloudflare’s employees
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Why does gRPC insist on trailers?
gRPC comes up occasionally on the Orange Site , often with a redress of grievences in the comment section. One of the major complaints people have with gRPC is that it requires HTTP trailers. This one misstep has caused so much heartache and trouble, I think it probably is the reason gRPC failed to achieve its goal…
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Arris / Arris-variant DSL/Fiber router critical vulnerability exposure
Cybersecurity researcher, entrepreneur, and engineer.
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ICMP, Ping, and Traceroute – What I wish I was taught (2020)
I wanted to write a post and do a bit of a deepdive into ICMP, ping and traceroute. I’ve found that having a good networking foundation has been a tremendous…
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What’s the maximum size of a DNS response?
Everybody knows a DNS response needs to fit into a 512 byte UDP packet, right? But suppose it doesn't fit...
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Understanding modern Linux routing (and wg-quick)
Back in the old days, I could just type route (or, later, ip route) in my Linux terminal and get an accurate picture of all my routes. This is no longer the case.
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DNS-over-HTTP/3 in Android
Posted by Matthew Maurer and Mike Yu, Android team To help keep Android users’ DNS queries private, Android supports encrypted DNS. I...
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Introduction to TCP and Sockets (2001)
This section is an introduction to TCP/IP programming using a sockets API. (Sockets can also be used to work with other network protocols, such as IPX/SPX and Appletalk, but that is beyond the scope of this document.) The standard socket API was originally developed in the Unix world, but has been ported to OS/400 as…