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Video: How Can You Master Public Cloud Networking?

If you’re a regular reader of this blog, you’ve probably realized there’s still need for networking in public clouds, and mastering it requires slightly different set of skills. What could you as a networking engineer to get fluent in this different world? I collected a few hints in the last video in Introduction to Cloud Computing webinar.

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Video: How Can You Master Public Cloud Networking?

If you’re a regular reader of this blog, you’ve probably realized there’s still need for networking in public clouds, and mastering it requires slightly different set of skills. What could you as a networking engineer to get fluent in this different world? I collected a few hints in the last video in Introduction to Cloud Computing webinar.

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Using chpasswd to change account passwords on Linux

The chpasswd command allows admins to change account passwords by piping username and password combinations to it.This can be done one-account-at-a-time or by putting all of the accounts to be modified in a file and piping the file to the command.[Get regularly scheduled insights by signing up for Network World newsletters.] How to use chpasswd Using the chpasswd command requires root privilege. You can switch to the root account and run a command like this:# echo nemo:imafish | chpasswd Better yet, you can use sudo with a command like this:To read this article in full, please click here

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Using chpasswd to change account passwords on Linux

The chpasswd command allows admins to change account passwords by piping username and password combinations to it.This can be done one-account-at-a-time or by putting all of the accounts to be modified in a file and piping the file to the command.[Get regularly scheduled insights by signing up for Network World newsletters.] How to use chpasswd Using the chpasswd command requires root privilege. You can switch to the root account and run a command like this:# echo nemo:imafish | chpasswd Better yet, you can use sudo with a command like this:To read this article in full, please click here

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Rockport Networks debuts the “switchless” network

A startup called Rockport Networks has exited stealth mode with an intriguing product: a switchless network. It claims the Rockport Switchless Network product can move data faster and with better latency than switched networks.In a Rockport Switchless Network, switching functionality has been reassigned to intelligent endpoint network cards where these devices (nodes) become the network. Each device has an FPGA and can connect up to 24 endpoints to a dedicated 1U SHFL (pronounced “shuffle”) optical device using passive cabling.[Get regularly scheduled insights by signing up for Network World newsletters.] SHFLs need no power or cooling and can be linked together to scale out the network. Ethernet and InfiniBand traffic can be carried over the Rockport network. The network cards are standard, low-profile half height, half length (HHHL) PCIe cards.To read this article in full, please click here

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Rockport Networks debuts the “switchless” network

A startup called Rockport Networks has exited stealth mode with an intriguing product: a switchless network. It claims the Rockport Switchless Network product can move data faster and with better latency than switched networks.In a Rockport Switchless Network, switching functionality has been reassigned to intelligent endpoint network cards where these devices (nodes) become the network. Each device has an FPGA and can connect up to 24 endpoints to a dedicated 1U SHFL (pronounced “shuffle”) optical device using passive cabling.[Get regularly scheduled insights by signing up for Network World newsletters.] SHFLs need no power or cooling and can be linked together to scale out the network. Ethernet and InfiniBand traffic can be carried over the Rockport network. The network cards are standard, low-profile half height, half length (HHHL) PCIe cards.To read this article in full, please click here

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Wacky as Facebook’s metaverse sounds, enterprises will have to deal with it

In our modern world, “metaverse” is the term applied to an artificial reality, a virtual world inhabited by avatars that represent real people and perhaps other AI virtual beings, too.What makes the concept relevant to enterprises are the Facebook decision to embrace metaverse as the future, the fact that others like Microsoft are following along, and the promise that it could redefine meetings, sales calls, support, and even work overall. Network planners would then have to consider its impact on traffic and connectivity.[Get regularly scheduled insights by signing up for Network World newsletters.] One big get-it-approved problem with the metaverse for enterprise is likely to be security. Facebook has had a lot of recent bad press for favoring profit over the welfare of its users, and that sort of thing sets compliance officers a-tingle, so self-hosting might be a solution. Executing that is partly a software issue and partly a network issue.The former, we can assume, would be handled by open-source development arising out of the interest Facebook has created. The latter isn’t as easy to dismiss.To read this article in full, please click here

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Hedge 107: Career Advice with Terry Slattery

Whether you’re just starting in your technology career, or you’re an old hand who likes to go back to basics and understand how to move forward in your career, this episode of the Hedge is for you. Terry Slattery joins Tom Ammon and Russ White to discuss the things you can do to build a successful career as in the world of network engineering.

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Cybersecurity Can Be Made Agile Using a Zero-Shot AI Approach

Zero-shot AI can function as an almost omnipresent figure that’s constantly analyzing logs, network traffic, and user actions to scan for irregularities.

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10 limitations of MU-MIMO in Wi-Fi

Multi-user MIMO allows multiple Wi-Fi devices to simultaneously receive multiple data streams. For example, a wireless access point (AP) can send data to four different Wi-Fi devices at the same time. MU-MIMO can greatly increase the network's throughput and is a real asset for high density networks.MIMO – which stands for multiple input multiple output – technology has evolved over the years since the debut of the single-user mode (SU-MIMO), which was introduced more than a decade ago with the 802.11n wireless standard. Learn more about MU-MIMO and Wi-Fi 6To read this article in full, please click here

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IPv6 Buzz 088: Host OS IPv6 Addresses – What’s Up With That?

In this episode of IPv6 Buzz we chat about IPv6 addresses on host OSes: the different types, how they are formed, what they look like, how to tell them apart, and how they are used.

The post IPv6 Buzz 088: Host OS IPv6 Addresses – What’s Up With That? appeared first on Packet Pushers.

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IPv6 Buzz 088: Host OS IPv6 Addresses – What’s Up With That?

In this episode of IPv6 Buzz we chat about IPv6 addresses on host OSes: the different types, how they are formed, what they look like, how to tell them apart, and how they are used.

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Kyndryl has spun off from IBM as a $19B managed service firm

Kyndryl, formerly IBM’s Managed Infrastructure Services unit, is officially an independent company.From the start the spinoff will be big, with more than 90,000 employees, $19 billion in annual revenue, operations in over 60 countries, and a customer base that includes 75% of the Fortune 100. Its goal of modernizing customer infrastructure will remain at the center of its strategy, but it wants to expand.[Get regularly scheduled insights by signing up for Network World newsletters.] Company executives say by spinning out of IBM, Kyndryl will have more freedom to partner with other major tech companies and cloud hyperscalers such as Google, AWS, and Microsoft. Plus it can invest in its workforce as well as focus on developing services for hot markets such as 5G, edge computing, cloud, and security.To read this article in full, please click here

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Kyndryl has spun off from IBM as a $19B managed service firm

Kyndryl, formerly IBM’s Managed Infrastructure Services unit, is officially an independent company.From the start the spinoff will be big, with more than 90,000 employees, $19 billion in annual revenue, operations in over 60 countries, and a customer base that includes 75% of the Fortune 100. Its goal of modernizing customer infrastructure will remain at the center of its strategy, but it wants to expand.[Get regularly scheduled insights by signing up for Network World newsletters.] Company executives say by spinning out of IBM, Kyndryl will have more freedom to partner with other major tech companies and cloud hyperscalers such as Google, AWS, and Microsoft. Plus it can invest in its workforce as well as focus on developing services for hot markets such as 5G, edge computing, cloud, and security.To read this article in full, please click here

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DDoS Attack Trends for Q3 2021

The third quarter of 2021 was a busy quarter for DDoS attackers. Cloudflare observed and mitigated record-setting HTTP DDoS attacks, terabit-strong network-layer attacks, one of the largest botnets ever deployed (Meris), and more recently, ransom DDoS attacks on voice over IP (VoIP) service providers and their network infrastructure around the world.

Here’s a summary of the trends observed in Q3 ‘21:

Application-layer (L7) DDoS attack trends:

• For the second consecutive quarter in 2021, US-based companies were the most targeted in the world.
• For the first time in 2021, attacks on UK-based and Canada-based companies skyrocketed, making them the second and third most targeted countries, respectively.
• Attacks on Computer Software, Gaming/ Gambling, IT, and Internet companies increased by an average of 573% compared to the previous quarter.
• Meris, one of the most powerful botnets in history, aided in launching DDoS campaigns across various industries and countries.

Network-layer (L3/4) DDoS attack trends:

• DDoS attacks increased by 44% worldwide compared to the previous quarter.
• The Middle East and Africa recorded the largest average attack increase of approximately 80%.
• Morocco recorded the highest DDoS activity in the third quarter globally — three out of every 100 packets were part of a DDoS Continue reading

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Heavy Strategy 012: Professional Development in Infrastructure Technology

A rarely covered topic in technology is professional development. Other careers have extensive programs to ensure practitioners develop and maintain a wide range of skills but this principle is rare in IT.  

The post Heavy Strategy 012: Professional Development in Infrastructure Technology appeared first on Packet Pushers.

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Heavy Strategy 012: Professional Development in Infrastructure Technology

A rarely covered topic in technology is professional development. Other careers have extensive programs to ensure practitioners develop and maintain a wide range of skills but this principle is rare in IT.  

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Why Does Internet Keep Breaking?

James Miles sent me a long list of really good questions along the lines of “why do we see so many Internet-related outages lately and is it due to BGP and DNS creaking of old age”. He started with:

Over the last few years there are more “high profile” incidents relating to Internet connectivity. I raise the question, why?

The most obvious reason: Internet became mission-critical infrastructure and well-publicized incidents attract eyeballs.

Ignoring the click baits, the underlying root cause is in many cases the race to the bottom. Large service providers brought that onto themselves when they thought they could undersell the early ISPs and compensate their losses with voice calls (only to discover that voice-over-Internet works too well).

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Why Does Internet Keep Breaking?

James Miles sent me a long list of really good questions along the lines of “why do we see so many Internet-related outages lately and is it due to BGP and DNS creaking of old age”. He started with:

Over the last few years there are more “high profile” incidents relating to Internet connectivity. I raise the question, why?

The most obvious reason: Internet became mission-critical infrastructure and well-publicized incidents attract eyeballs.

Ignoring the click baits, the underlying root cause is in many cases the race to the bottom. Large service providers brought that onto themselves when they thought they could undersell the early ISPs and compensate their losses with voice calls (only to discover that voice-over-Internet works too well).

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Javascript Notes: Types

Javascript is a dynamically type language. The types of variables are evaluated at runtime based on the contents of the variable. Typescript is a superset of Javascript which adds static typing to the language (amongst other things). There are two kinds of types in Javascript;...continue reading