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Category Archives for "Networking"

Tech Bytes: Palo Alto Networks Enhances AIOps For Prisma SD-WAN (Sponsored)

Today on the Tech Bytes podcast we talk with sponsor Palo Alto Networks about the latest AI Ops features for SD-WAN. AI Ops analyzes network data and then recommends fixes for probems, a capability that's becoming increasingly necessary as network complexity grows to encompass underlays, overlays, on and off-prem cloud destinations, remote working, and more.

The post Tech Bytes: Palo Alto Networks Enhances AIOps For Prisma SD-WAN (Sponsored) appeared first on Packet Pushers.

Fragmentation

One of the discussion topics at the recent ICANN 75 meeting was an old favourite of mine, namely the topic of Internet Fragmentation. Here, I’d like to explore this topic in a little more detail and look behinds the kneejerk response of declaiming fragmentation as bad under any and all circumstances. Perhaps there are more subtleties in this topic than simple judgements of good or bad.

Kubernetes 002. Scaling Out Cluster and Turning It in Highly Available One

Hello my friend,

As mentioned in the previous blogpost, we continue looking into Kubernetes. In the previous blogpost we have built a simple cluster consisting of one control plane node, which is the one ruling the cluster, and two worker nodes, which are the ones hosting the customers’ workloads. Today we will add a few more nodes, both workers and control plane, to the cluster to convert it into a high available one.



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Are You Still Teaching Network Automation?

We absolutely are. One of the important things we have figured out is that automation is for sure the cross-platform technology. Therefore, whatever area you are coming from or heading two (networking, system administration, or cloud engineering), knowledge of automation frameworks and components, such as Ansible, Bash, Python, YAML, JSON, REST API, GRPC/GNMI is very beneficial and, in fact, is almost mandatory these days.

And in our Network Automation Trainings we have put it together in Continue reading

Cloudflare’s 2022 Annual Founders’ Letter

Cloudflare’s 2022 Annual Founders’ Letter
Cloudflare’s 2022 Annual Founders’ Letter

Cloudflare launched on September 27, 2010. This week we'll celebrate our 12th birthday. As has become our tradition, we'll be announcing a series of products that we think of as our gifts back to the Internet. In previous years, these have included products and initiatives like Universal SSL, Cloudflare Workers, our Zero Markup Registrar, the Bandwidth Alliance, and R2 — our zero egress fee object store — which went GA last week.

We're really excited for what we'll be announcing this year and hope to surprise and delight all of you over the course of the week with the products and features we believe live up to our mission of helping build a better Internet.

Cloudflare’s 2022 Annual Founders’ Letter

Founders' letter

While this will be our 12th Birthday Week of product announcements, for the last two years, as the cofounders of the company, we've also taken this time as an opportunity to write a letter publicly reflecting on the previous year and what's on our minds as we go into the year ahead.

Since our last birthday, it's been a tale of two halves of a very different year. At the end of 2021 and into the first two months Continue reading

Heavy Networking 648: Using Zero Knowledge Middleboxes To Enforce Policy On Encrypted Traffic

Encrypted traffic poses a problem for enterprise policy enforcement. On today's Heavy Networking, we explore the notion of zero knowledge middleboxes, which use a variety of techniques to allow firewalls or other middleboxes to enforce policy without the need for decryption. Our guest is Dr. Paul Grubbs, whose research into zero knowledge middleboxes prompted this episode.

The post Heavy Networking 648: Using Zero Knowledge Middleboxes To Enforce Policy On Encrypted Traffic appeared first on Packet Pushers.

Heavy Networking 648: Using Zero Knowledge Middleboxes To Enforce Policy On Encrypted Traffic

Encrypted traffic poses a problem for enterprise policy enforcement. On today's Heavy Networking, we explore the notion of zero knowledge middleboxes, which use a variety of techniques to allow firewalls or other middleboxes to enforce policy without the need for decryption. Our guest is Dr. Paul Grubbs, whose research into zero knowledge middleboxes prompted this episode.

Single-core vs. multi-core CPUs

In reviewing CPU and server benchmarks, you’ve undoubtedly noticed that testing covers both single-core and multi-core performance. Here's the difference.In terms of raw performance, both are equally important, but single- and multi-core have areas of use where they shine. So when picking a CPU, it’s important to consider your particular workloads and evaluate whether single-core or multi-core best meets your needs.Single-core CPUs There are still a lot of applications out there that are single-core limited, such as many databases (although some, like MySQL, are multicore).Performance is measured in a couple of ways. Clock frequency is the big one; the higher the frequency the faster apps will run. Also important is the width of execution pipelines, and the wider the pipeline, the more work can get done per clock cycle. So even if an app is single threaded, a wider pipeline can improve its performance.To read this article in full, please click here

The difference between single-core and multi-core performance

In reviewing CPU and server benchmarks, you’ve undoubtedly noticed that testing covers both single-core and multi-core performance. Here's the difference.In terms of raw performance, both are equally important, but single- and multi-core have areas of use where they shine. So when picking a CPU, it’s important to consider your particular workloads and evaluate whether single-core or multi-core best meets your needs.Single-core CPUs There are still a lot of applications out there that are single-core limited, such as many databases (although some, like MySQL, are multicore).Performance is measured in a couple of ways. Clock frequency is the big one; the higher the frequency the faster apps will run. Also important is the width of execution pipelines, and the wider the pipeline, the more work can get done per clock cycle. So even if an app is single threaded, a wider pipeline can improve its performance.To read this article in full, please click here

Single-core vs. multi-core CPUs

In reviewing CPU and server benchmarks, you’ve undoubtedly noticed that testing covers both single-core and multi-core performance. Here's the difference.In terms of raw performance, both are equally important, but single- and multi-core have areas of use where they shine. So when picking a CPU, it’s important to consider your particular workloads and evaluate whether single-core or multi-core best meets your needs.Single-core CPUs There are still a lot of applications out there that are single-core limited, such as many databases (although some, like MySQL, are multicore).Performance is measured in a couple of ways. Clock frequency is the big one; the higher the frequency the faster apps will run. Also important is the width of execution pipelines, and the wider the pipeline, the more work can get done per clock cycle. So even if an app is single threaded, a wider pipeline can improve its performance.To read this article in full, please click here

Using ‘break’ and ‘continue’ to exit loops in bash

The commands for looping in bash are extremely useful. They allow you to run a series of commands as many times as needed to process a large collection of data. The break and continue commands provide another special option. They allow you to exit a loop early or skip the remaining commands in the loop and return to the beginning.Both the break and the continue commands are meant to be used only in for, while and until loops. In fact, if you try to invoke the break command on its own, bash will tell you just that.To read this article in full, please click here

Using ‘break’ and ‘continue’ to exit loops in bash

The commands for looping in bash are extremely useful. They allow you to run a series of commands as many times as needed to process a large collection of data. The break and continue commands provide another special option. They allow you to exit a loop early or skip the remaining commands in the loop and return to the beginning.Both the break and the continue commands are meant to be used only in for, while and until loops. In fact, if you try to invoke the break command on its own, bash will tell you just that.To read this article in full, please click here

GA Week 2022: what you may have missed

GA Week 2022: what you may have missed

Back in 2019, we worked on a chart for Cloudflare’s IPO S-1 document that showed major releases since Cloudflare was launched in 2010. Here’s that chart:

GA Week 2022: what you may have missed

Of course, that chart doesn’t show everything we’ve shipped, but the curve demonstrates a truth about a growing company: we keep shipping more and more products and services. Some of those things start with a beta, sometimes open and sometimes private. But all of them become generally available after the beta period.

Back in, say, 2014, we only had a few major releases per year. But as the years have progressed and the company has grown we have constant updates, releases and changes. This year a confluence of products becoming generally available in September meant it made sense to wrap them all up into GA Week.

GA Week has now finished, and the team is working to put the finishing touches on Birthday Week (coming this Sunday!), but here’s a recap of everything that we launched this week.

What launched Summary Available for?
Monday (September 19)
Cloudforce Continue reading

Weekend Reads 092322


Arm says Nvidia’s Grace processor will be among the first chips to use its upcoming Neoverse V2 CPU cores.


The early deceased Heinz Rutishauser (1918–1970) of ETH Zurich is considered the most important Swiss pioneer from the early era of computer science.


According to Dell’Oro, datacenter switching set a new record for revenues for any second quarter in history and also for any first six months of any year since it has been keeping records.


A key requirement for a bad actor wanting to launch a brand attack is the registration of a carefully chosen domain name.


Here, we introduce the concept of the data bill of materials or personal data bill of materials, a comprehensive inventory of personal data used in software systems.


VirusTotal recently identified 7-Zip, TeamViewer, CCleaner, Microsoft Edge, Steam, Zoom, and WhatsApp as the most-mimicked software brands in malware attacks.


No business can own the generic word for the product it sells. We would find it preposterous if a single airline claimed exclusive use of the word “air,” or a broadband service tried to stop its rivals from using the word “broadband.”


Cisco has revealed new hardware it is willing to sell to Continue reading

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