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Category Archives for "Networking"

The simplicity and complexity of using quotes on Linux

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here

The simplicity and complexity of using quotes on Linux

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here

The simplicity and complexity of using quotes on Linux

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here

Enterprise adoption of smartNICs faces challenges

Growth in hyperscaler data centers and processor-intensive enterprise workloads, such as high-performance computing (HPC) and AI, is set to drive broadscale adoption of SmartNICs.The Ethernet controller and adapter market will grow from $3.2 billion in 2021 to $5 billion in 2026, with smartNICs contributing significantly to the growth, according to Dell’Oro Group. In addition, server network connectivity will transition to higher speeds, according to the research firm, which predicts 100 Gbps and higher-speed ports will account for 44% of the shipments in five years.To read this article in full, please click here

Enterprise adoption of smartNICs limited to high-end applications

Growth in hyperscaler data centers and processor-intensive enterprise workloads, such as high-performance computing (HPC) and AI, is set to drive broadscale adoption of smartNICs.The Ethernet controller and adapter market will grow from $3.2 billion in 2021 to $5 billion in 2026, with smartNICs contributing significantly to the growth, according to Dell’Oro Group. In addition, server network connectivity will transition to higher speeds, according to the research firm, which predicts 100 Gbps and higher-speed ports will account for 44% of the shipments in five years.To read this article in full, please click here

Tech Bytes: Manage Cloud Risks With Fortinet’s New FortiCNP Offering (Sponsored)

Today on the Tech Bytes podcast we talk about managing cloud risk with sponsor Fortinet. Fortinet recently announced its new FortiCNP product, which collects and correlates security findings, alerts and other data from cloud-native services, analyzes vulnerabilities, looks for misconfigurations, and more.

The post Tech Bytes: Manage Cloud Risks With Fortinet’s New FortiCNP Offering (Sponsored) appeared first on Packet Pushers.

Using the watch command on Linux

Watch is a command on Linux that will repeatedly run commands for you, and it offers some very useful options. One of its basic options is that you can tell watch how long to wait before running the specified command again. For example, if you run the command watch -n 10 date, the watch command will first clear the screen and run the date command right away. After that, it will run the command every 10 seconds until you stop it by hitting control-C. Note that the first line on the screen will indicate the wait time between iterations (every 10 seconds).$ watch -n 10 date Every 10.0s: date fedora: Fri, Aug 12 16:32:09 EDT 2022 Fri Aug 12 04:10:11 PM EDT 2022 The -n option specifies the number of seconds between commands. The default is 2. You might have to look closely to notice the changes in the output.To read this article in full, please click here

Using the watch command on Linux

Watch is a command on Linux that will repeatedly run commands for you, and it offers some very useful options. One of its basic options is that you can tell watch how long to wait before running the specified command again. For example, if you run the command watch -n 10 date, the watch command will first clear the screen and run the date command right away. After that, it will run the command every 10 seconds until you stop it by hitting control-C. Note that the first line on the screen will indicate the wait time between iterations (every 10 seconds).$ watch -n 10 date Every 10.0s: date fedora: Fri, Aug 12 16:32:09 EDT 2022 Fri Aug 12 04:10:11 PM EDT 2022 The -n option specifies the number of seconds between commands. The default is 2. You might have to look closely to notice the changes in the output.To read this article in full, please click here

Using the watch command on Linux

Watch is a command on Linux that will repeatedly run commands for you, and it offers some very useful options. One of its basic options is that you can tell watch how long to wait before running the specified command again. For example, if you run the command watch -n 10 date, the watch command will first clear the screen and run the date command right away. After that, it will run the command every 10 seconds until you stop it by hitting control-C. Note that the first line on the screen will indicate the wait time between iterations (every 10 seconds).$ watch -n 10 date Every 10.0s: date fedora: Fri, Aug 12 16:32:09 EDT 2022 Fri Aug 12 04:10:11 PM EDT 2022 The -n option specifies the number of seconds between commands. The default is 2. You might have to look closely to notice the changes in the output.To read this article in full, please click here

BGP Peering (2)

I recorded the beginnings of a BGP training series over at Packet Pushers a short while back; they’ve released these onto youtube (so you can find the entire series there). I’m highlighting one of these every couple of weeks ’til I’ve gone through the entire set of recordings. In this recording, I’m talking through some more interesting aspects of BGP peering, including challenges with IPv6 link local nexthops, promiscuous peering, and capabilities.

Learning BGP Module 2 Lesson 2: Peering, Part 2 – Video

VMware NSX Achieves Common Criteria Certification for Network Devices (NDcPP 2.2e)

We are excited to share that as of July 2022, VMware NSX-T version 3.1 has passed Common Criteria certification for Network Devices under Collaborative Protection Profile 2.2e, also known as NDcPP 2.2e. This is one of many testaments to our commitment to providing industry-leading certified solutions for customers from federal departments and agencies, international governments and agencies, and other highly regulated industries and sectors. Along with FIPS, DISA-STIG, ICSA Labs firewall certification, and several other independent evaluations, the NDcPP 2.2e certification validates NSX as a reliable network virtualization platform that satisfies rigorous government security standards.

VMware NSX 3.1 is now listed:

From the NIAP Security Evaluation Summary:

The evaluation was carried out in accordance with the Common Criteria Evaluation and Validation Scheme (CCEVS) process and scheme. The criteria against which the VMware NSX-T Data Center 3.1 was evaluated are described in the Common Criteria for Information Technology Security Evaluation, Version 3.1 rev 5.  The evaluation methodology used by the evaluation team Continue reading

Situational Awareness for Network Migrations

At IP Architechs we perform a lot of network migrations and it is no secret network migrations/ maintenance windows can be one of the most nerve-racking things for engineers, managers, and business leaders for a variety of reasons.

For the engineers the uncertainty might be caused by fear of failure, not being able to predict the outcome due to complexity, rushed on preparation to meet a deadline, or a litany of other reasons.

For managers and business leaders it might be more along the lines of; what happens if this goes wrong, how will this effect my bottom line, are there going to be 1000s of trouble tickets come 8/9am when everyone hits the office, and so on.

The Preparation

We’re going to look at this at the perspective of the engineer throughout. The prep work is probably one of the most important pieces of success. This is where you do many things including but not limited to:

  • building and testing the configuration to be implemented
  • making a rollback plan — this might be something as simple as move a cable and shut an interface or a multistep/multi-device plan
  • know the situation surrounding the window

Lets explore understanding the situation Continue reading

Weekend Reads 081222


The distributed, peer-to-peer (P2P) InterPlanetary File System (IPFS) has become a hotbed of phishing-site storage: Thousands of emails containing phishing URLs utilizing IPFS are showing up in corporate inboxes.


Walmart’s advice to companies trying to control the hefty cost of running workloads on the three largest cloud providers comes down to one word: choice.


With nearly half of all breaches involving external attackers enabled by stolen or fake credentials, security firms are pushing a high-fidelity detection mechanism for such intrusions: canary tokens.


These WISPs might have the 100/20 Mbps capability for some customers close to a tower, but it’s impossible to be able to deliver those speeds to everybody across an entire county.


The World Wide Web Consortium (W3C) has announced that Decentralized Identifiers (DIDs) v1.0 is now an official Web standard.


Intel CEO Pat Gelsinger’s carefully assembled house of cards is collapsing around him. And it’s not really that surprising when you look at the hand he’s been dealt.


The Flash Memory Summit 2022 was held as an in-person event again this week for the first time since 2019, at the Santa Clara Convention Center San Francisco, showcasing the latest developments in memory and storage.


Conflicting business Continue reading

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