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Weekend Reads 052424


The European Union’s new Digital Markets Act (DMA) is a complex, many-legged beast, but at root, it is a regulation that aims to make it easier for the public to control the technology they use and rely on.


When optimizing the write performance of GreptimeDB v0.7, we discovered through flame graphs that the CPU time spent parsing Prometheus write requests accounted for about 12% of the total.


We think that waferscale computing is an interesting and even an inevitable concept for certain kinds of compute and memory. But inevitably, the work you need to do goes beyond what a single wafer’s worth of cores can deliver, and then you have the same old network issues.


Evidence is mounting that tech companies’ policies demanding staff return to the office are only serving to drive out the talent that became accustomed to remote work.


ZTDNS integrates the Windows DNS client and the Windows Filtering Platform (WFP) to enable this domain-name-based lockdown. First, Windows is provisioned with a set of DoH or DoT capable Protective DNS servers; these are expected to only resolve allowed domain names.


The use of Machine Learning and Deep Learning models allows us to understand the intention of Continue reading

Upcoming Training: How the Internet Really Works

The 29th of May, in 7 days, I’m teaching a four-hour webinar/class on Safari Books Online:

From technologists to business leaders, few have a “big picture” understanding of how the Internet is put together. Often this is because the Internet is composed of so many different systems, each of which is deeply complex, so it is easy to specialize in “one part of the Internet,” and it is hard to learn about the other parts without diving into many details. This class de-mystifies the overall structure and “moving parts” of the global Internet. The class begins with a user connecting to a web site, and the process of translating the name of the service the user is seeking to a logical location (a server) where the service is actually located. From there, the path of the packets between the user and the server is traced, exposing each of the different kinds of providers that carry the packet along the way.

This class isn’t just for network engineers, it’s for anyone interested in how the Internet works. You don’t need prior network engineering experience or knowledge to understand the content–so feel free to forward along to anyone you think might be Continue reading

Hedge 227: Provider Consolidation and Competition

Europe and the United States are completely different landscapes of Internet service providers. Which provides better service for customers, and which direction should these different markets go? Luke Kehoe joins Tom Ammon, Eyvonne Sharp, and Russ White to discuss the European market specifically, and why the European market needs consolidation.

Luke’s article on this topic is here.

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Weekend Reads 051724


The FCC lawfully fined U.S. facilities-based wireless carriers nearly $200 million for selling highly intrusive location data about subscribers without their “opt-in” consent.


Geoff Huston explores the performance of the BBR and Cubic flow control algorithms on the Starlink network through comprehensive measurements.


An instruction set is a lingua franca between compilers and microarchitecture. As such, it has a lot in common with compiler intermediate languages, a subject on which Fred Chow has written an excellent overview


A new malware called Cuttlefish is targeting small office and home office (SOHO) routers with the goal of stealthily monitoring all traffic through the devices and gather authentication data from HTTP GET and POST requests.


But one need not know anything about aeronautics to understand that things are not going well for Boeing, and that the company’s approach is clearly broken. That much was made clear in a new Ars Technica piece from Eric Berger, walking readers through the race between Boeing and SpaceX to develop an astronaut capsule for space travel.


“Legal basis” requirements for data processing, justifying data processing activities and transfers, and adhering to data minimization principles began hitting organizations’ radars with the EU General Data Protection Regulation.


Given Continue reading

Rule 11 Academy is (Somewhat) Live

The Academy does not replace this blog, the Hedge, etc. Instead, it’s a place for me to recreate all the training materials I’ve taught in the past, put them in one place, and adding new training material besides. It’s light right now, but I plan to post about once or twice a week.

Note this is a subscription site with paid content and two memberships–six months and yearly.

Get six months free using the coupon code BEAG2DRUP0TORNSKUT.

https://rule11.ac/

Hedge 225: The CCNA

The CCNA has a long history as an important certification for network engineers. While the CCST has been created by Cisco “below” the CCNA, or as a different starting point, many network engineers begin their career with the CCNA. Join Jason Gooley, Wendell Odom, Tom, and Russ as we discuss the most recent updates to the CCNA, the way updates to the program are changing, and Jason’s and Wendell’s updated book on the CCNA.

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Weekend Reads 050424


Quantum sensing is poised to revolutionize virtually every aspect of our world. Quantum sensing’s distinctive ability to detect magnetic signatures is already aiding in navigation for countless fuel tankers worldwide, providing otherwise unachievable medical scans, and keeping all of our computer clocks in sync.


Surprisingly, most network attacks are not exceptionally sophisticated, technologically advanced, or reliant on zero-day tools that exploit edge-case vulnerabilities.


A growing number of data center operators and equipment vendors are anticipating the proliferation of direct liquid cooling systems (DLC) over the next few years. As far as projections go, Uptime Institute’s surveys agree: the industry consensus for the mainstream adoption of liquid-cooled IT converges on the latter half of the 2020s.


The recent discovery of a backdoor in XZ Utils (CVE-2024-3094), a data compression utility used by a wide array of various open-source, Linux-based computer applications, underscores the importance of open-source software security.


The IETF has had a long tradition of doing its technical work through a consensus process, taking into account the different views among IETF participants and coming to (at least rough) consensus on technical matters.


This is where Two-Factor Authentication (2FA) steps in as a powerful tool to bolster security. Let’s delve into Continue reading

History of Networking: Updated Links

Someone told me some (or many?) of the links are broken to the History of Networking recordings. I went through the S3 bucket and renamed all the files so there are no spaces (because S3 buckets don’t always work right with spaces), and then checked them all to make certain they work. Along the way I found three or four episodes that were recorded and not on the HoN page, so I added them.

Check out the corrected listing here.

I think I have one more recording that was never edited and published; I will probably put it in the Hedge stream in the next month or two just so it’s out there.

Weekend Reads 042624


The Stanford Institute for Human-Centered Artificial Intelligence (HAI) has issued its seventh annual AI Index Report, which reports a thriving industry facing growing costs, regulations, and public concern.


At a time when no one expected progress on the U.S. federal privacy front, a new discussion draft for a comprehensive consumer privacy bill has emerged with bipartisan and bicameral support.


There is a new way for folks to track and spy on you. A recent article in the MIT Technology Review described how WiFi tracking has become a usable technology.


How would AI help produce victims? ‘Deep fake’ video technology. We previously saw, in ‘Human Impersonation AI Must be Outlawed,’ how extortion videos could target millions of individuals worldwide simultaneously every day.


A few weeks ago, I got a bit miffed reading yet another article that was too dismissive about memory safety, basically being mostly dismissive about the need for change.


Combined heat and power using waste heat recovery is a natural for AI/data centers deserves more consideration. We hope that we have lit that spark.


Larry Sanger remembers the promise of the web. He co-founded Wikipedia in 2001, with the hope that it could sustain a “free and open” Continue reading

Weekend Reads 041924


Huawei has released details of how it manages its own cloud with a dynamic traffic allocation system optimized by machine learning and developed in response to surging demand for its services during the COVID-19 pandemic.


A jury has ordered Amazon Web Services to pay $525 million for infringing distributed data storage patents in a case brought by a technology outfit called Kove IO.


The BBC has just shared another video from its archives, this one showing a report about computer addicts from way back in 1983, when computers were just starting to find their way into the workplace and home.


Microsoft is currently testing a new way to showcase ads on the Windows 11 Start Menu, and it’s meant to encourage users to download more applications.


Google announced on Wednesday it will invest $1 billion in two submarine cables to create new routes between the US and Japan.


While writing about Git, I’ve noticed that a lot of folks struggle with Git’s error messages. I’ve had many years to get used to these error messages so it took me a really long time to understand why folks were confused.


If the prognosticators at IDC are correct, four years from now Continue reading

New Course: Coding Skills for Network Engineers

This Friday, Marlon Bailey and I will be teaching a new four-hour class on coding skills for network engineers over on Safari Books Online through Pearson. From the course description:

Network engineers are increasingly expected to know how to perform basic coding, like building scripts to gather information and build or maintain an automation system. In larger organizations with full-time coders, network engineers are expected to effectively work with coders, on their own turf, to build and maintain network automation systems. All of these tasks require a basic knowledge of the structure and terminology of programming. There are a lot of courses that show you how to build your first program, or how to perform basic tasks using common programming languages—this course is different. This course will help you build a “mental map” of the software development space, gathering ideas and patterns learned across years into a simple-to-understand format. In this course you will learn data structures, program flow control, and—most importantly—how to structure software for efficiency and maintainability over the long haul.

For anyone who doesn’t know Marlon, you can find his LinkedIn profile here.

Register for the class here.

Weekend Reads 041224


Future AMD processors could feature domain-specific accelerators – even some created by third parties, according to senior execs at the chip shop.


We tolerate such things even though we understand these practices usually harm those who willingly engage in them. Consider it one price we pay for relative freedom. But what should we do when these practices destroy the lives of innocent bystanders?


Thread hijacking attacks. They happen when someone you know has their email account compromised, and you are suddenly dropped into an existing conversation between the sender and someone else.


The first thing to note about the rumored “Stargate” system that Microsoft is planning to build to support the computational needs of its large language model partner, OpenAI, is that the people doing the talking – reportedly OpenAI chief executive officer Sam Altman – are talking about a datacenter, not a supercomputer


Now we’re going to go much deeper into the layers that relate to the PHY, which is PCS, PMA, and Autonegotiation. First though, let’s review the objectives of 1000BASE-T.


macOS has been gaining the unwanted attention of more and more backdoor operators since late 2023. In February 2024, Bitdefender uncovered RustDoor, which was written in Rust Continue reading

Architecture and Process

Driving through some rural areas east of where I live, I noticed a lot of collections of buildings strung together being used as homes. The process seems to start when someone takes a travel trailer, places it on blocks (a foundation of sorts) and builds a spacious deck just outside the door. Over time, the deck is covered, then screened, then walled, becoming a room.

Once the deck becomes a room, a new deck is built, and the process begins anew. At some point, the occupants decide they need a place to store some sort of equipment, so they build a shed. Later, the shed is connected to the deck, the whole thing becomes an extension of the living space, and a new shed is built.

These … interesting … places to live are homes to the people who live in them. They are often, I assume, even happy homes.

But they are not houses in the proper sense of the word. There is no unifying theme, no thought of how traffic should flow and how people should live. They are a lot like the paths crisscrossing a campus—built where the grass died.

Our networks are like these homes—they are Continue reading

Hedge 221: Energy Aware Protocols

A lot of people are spending time thinking about how to make transport and control plane protocols more energy efficient. Is this effort worth it? What amount of power are we really like to save, and what downside potential is there in changing protocols to save energy? George Michaelson joins us from Australia to discuss energy awareness in protocols.

 

 

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