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Category Archives for "Networking"

Chipmakers’ Biggest Buys and Sells of 2019

Billions of dollars changed hands this year as industry giants attempted to bolster their positions...

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Unix is turning 50. What does that mean?

2020 is a significant year for Unix. At the very start of the year, Unix turns 50.While some of the early development of Unix predates the official start of its "epoch," Jan 1, 1970 remains the zero-point in POSIX time and the recognized beginning of all things Unix. Jan 1, 2020 will mark 50 years since that moment.Unix time vs human time In terms of human time, 50 years is a big deal. In terms of Unix time, there's nothing particularly special about 50 years. 48.7 years would be no less significant.Unix (including Linux) systems store date/time values as the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC in 32 bits. To determine how many seconds have passed since that time and, thus, what right now looks like as a Unix time value, you can issue a command like this:To read this article in full, please click here

Matt Oswalt – Portfolio

Short Bio Matt Oswalt hails from Portland, OR, and focuses on the intersection of network infrastructure, automation, systems, and software engineering. He’s passionate about enabling engineers to evolve their careers to the next level, and sharing the bright spots that exist within the technology industry with the masses. You can often find him speaking at conferences or meetups about these topics, as well as writing about them on his blog (https://keepingitclassless.

About Matt

My name is Matt Oswalt, and I have a fairly eclectic background. When I was 14, I created my first program - an alien shooter on my TI-82 calculator. Since then, I’ve enjoyed building new things and showing them to anyone who will listen. This passion continues to this day, as you’ll find with projects like ToDD and NRE Labs, I just really enjoy building cool stuff. You can explore these and all my other open source projects on my GitHub profile.

The Bookshelf

I am a big fan of Audible for books. Every once in a while I have time and patience to read a physical book, but often times I find myself needing to do things like washing dishes, going on a long walk or drive, and Audible has made it so much easier for me to get back into “reading”. Since I started doing this, I’d like to share the books that I’ve been able to get through this way.

DC. Part 16. Microsoft Azure SONiC on the Mellanox switches in data centre (with Cisco XR an Nokia SR OS for inter-OP).

Hello my friend,

The Christmas and New Year is coming, so it is typically the time to think about the future and plan ahead. And today we look into future by reviewing the new network operation system deployed in the data centres hosting Microsoft Azure clouds. This operation system is called SONiC: Software for Open Networking in the Cloud. 



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No part of this blogpost could be reproduced, stored in a 

retrieval system, or transmitted in any form or by any 

means, electronic, mechanical or photocopying, recording, 

or otherwise, for commercial purposes without the 

prior permission of the author.

Discalimer

If you even more interested in your future, join our network automation training we start on 18th and 22nd of January, where we cover the details of the data modelling, NETCONF/YANG, REST API, Python and Ansible in the multivendor environment with Cisco, Nokia, Arista and Cumulus Linux as network functions.

Thanks

Special thanks for Avi Alkobi from Mellanox for providing me the Mellanox SN2010 for tests and initial documentation for Microsoft Azure SONiC setup.

Brief description

Everyone talks about the clouds. You can hear about public clouds, private clouds, hybrid clouds, clouds interconnection Continue reading

5G Gains US Foothold in 2019

5G is available from sea to shining sea — with many pockets of 4G LTE remaining in between.

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Cisco Warns About Ongoing Security Exploit

The bug was initially spotted by Cisco in June 2018 and given a “critical” rating.

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IDG Contributor Network: Recent VPN hacks reveal transparency issues within the industry and its supply chain

Consumers are no doubt becoming increasingly aware about the safety and security of their online activity after many highly publicized studies have shown an uptick in online data theft. According to the Federal Trade Commission, there were 3 million reports of identity theft alone in 2018.Even though these threats — and the rash of data breaches — continue to grab headlines, consumers still are connecting to public wifi despite the threats and are joining other unsafe networks while traveling. More cautious or tech-savvy individuals know to turn to virtual private networks (VPNs) as a way to safely connect online, and as VPNs become more mainstream, some project the VPN market can grow to more than $35 billion by 2022. We’ve even seen some vendors to capitalize by creating flashy TV commercials that insinuate that they are consumers’ digital doorman. To read this article in full, please click here

IDG Contributor Network: Recent VPN hacks reveal transparency issues within the industry and its supply chain

Consumers are no doubt becoming increasingly aware about the safety and security of their online activity after many highly publicized studies have shown an uptick in online data theft. According to the Federal Trade Commission, there were 3 million reports of identity theft alone in 2018.Even though these threats — and the rash of data breaches — continue to grab headlines, consumers still are connecting to public wifi despite the threats and are joining other unsafe networks while traveling. More cautious or tech-savvy individuals know to turn to virtual private networks (VPNs) as a way to safely connect online, and as VPNs become more mainstream, some project the VPN market can grow to more than $35 billion by 2022. We’ve even seen some vendors to capitalize by creating flashy TV commercials that insinuate that they are consumers’ digital doorman. To read this article in full, please click here

Recent VPN hacks reveal transparency issues within the industry and its supply chain

Consumers are no doubt becoming increasingly aware about the safety and security of their online activity after many highly publicized studies have shown an uptick in online data theft. According to the Federal Trade Commission, there were 3 million reports of identity theft alone in 2018.Even though these threats — and the rash of data breaches — continue to grab headlines, consumers still are connecting to public wifi despite the threats and are joining other unsafe networks while traveling. More cautious or tech-savvy individuals know to turn to virtual private networks (VPNs) as a way to safely connect online, and as VPNs become more mainstream, some project the VPN market can grow to more than $35 billion by 2022. We’ve even seen some vendors to capitalize by creating flashy TV commercials that insinuate that they are consumers’ digital doorman. To read this article in full, please click here

The Week in Internet News: India Sets Record for Longest Internet Shutdown in a Democracy

The longest ever: The 130-day-plus shutdown of the Internet in the Indian region of Kashmir is now the longest ever in a democracy, the Washington Post notes. The Kashmir Chamber of Commerce estimates $1.4 billion in losses due to the shutdown. Meanwhile, the Indian government is stepping up its shutdown efforts in response to protests across the country, TechCrunch reports. The protests are largely focused on a new citizenship law, which creates a path to citizenship for immigrants of all the major religions except Islam.

Another encryption fight: There’s a battle brewing over the encryption of Internet traffic being pushed by Google and Cloudflare, the ACLU says in a blog post. Some U.S. telecom carriers are calling on Congress to stop the encryption efforts. The blog post has a good explanation of the technical issues, while taking sides in the debate.

New standards for the IoT: Amazon, Apple, Google, and the Zigbee Alliance are working on a new open-source networking standard for home Internet of Things connected devices, ZDNet reports. The Connected Home over IP standard aims to make it easier for various IoT devices to communicate with each other.

Protesting social media bill: Thousands of people in Continue reading

Is AI the Antidote to Network Complexity?

While 5G and industrial IoT are still years from maturity, that's not stopping companies from...

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This $387 Azure certification prep bundle is currently on sale for $29

Modern tech companies require more computing power than ever before, so many of them are turning to cloud services like Microsoft Azure to meet their needs. As such, becoming cloud-certified is a necessity if you want to pursue today’s highest-paying IT jobs. With this 4-course bundle, you can become an Azure master for just $29. To read this article in full, please click here

How do RFC3161 timestamps work?

RFC3161 exists to demonstrate that a particular piece of information existed at a certain time, by relying on a timestamp attestation from a trusted 3rd party. It's the cryptographic analog of relying on the date found on a postmark or a notary public's stamp.

How does it work? Let's timestamp some data and rip things apart as we go.

First, we'll create a document and have a brief look at it. The document will be one million bytes of random data:

 $ dd if=/dev/urandom of=data bs=1000000 count=1  
 1+0 records in  
 1+0 records out  
 1000000 bytes transferred in 0.039391 secs (25386637 bytes/sec)  
 $ ls -l data  
 -rw-r--r-- 1 chris staff 1000000 Dec 21 14:10 data  
 $ shasum data  
 3de9de784b327c5ecec656bfbdcfc726d0f62137 data  
 $

Next, we'll create a timestamp request based on that data. The -cert option asks the timestamp authority (TSA) to include their identity (certificate chain) in their reply and -no_nonce omits anti-replay protection from the request. Without specifying that option we'd include a large random number in the request.

 $ openssl ts -query -cert -no_nonce < data | hexdump -C  
 Using configuration from /opt/local/etc/openssl/openssl.cnf  
 00000000 30 29 02 01 01 30 21 30 09 06 05 2b 0e 03  Continue reading
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