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2021 IT Blog Awards finalist!

IT Blog Awards Finalist 2021

I have the honor of having my blog selected as a finalist in the 2021 IT Blog Awards, hosted by Cisco. It is a privilege and a great joy for me to have my blog selected for the fourth consecutive year! Congratulations also to all of the other finalists, who all produce great and valuable content! Click here to vote and choose the winner of the 2021 IT Blog Awards. If you want to vote for my blog, you can find it under: “Let’s talk about Network“, thank you in advance…

The post 2021 IT Blog Awards finalist! appeared first on AboutNetworks.net.

Keeping up with the Pepelnjakᣵ — OSPF over unnumbered interfaces for SROS

🎥Keeping up with the Pepelnjakᣵ — OSPF over unnumbered interfaces for SROS

Running OSPF over unnumbered interfaces using SROS and Containerlab

Another week, another Netsim-Tools release 😩 One would think that a “reduced scope of activities” and Irena leaving would slow things down, but…The “s” (exponential) in the title reflects my suspicion that Ivan has somehow managed to clone himself, or perhaps we are seeing the outputs of an as-yet unnamed team of collaborators publishing in his name. Either way, things are crazy hot and changing on a daily basis, the “bleeding edge” of network automation indeed.

OSPF over unnumbered interfaces

This morning Ivan published a blog post about OSPF over unnumbered interfaces. The topology for that article can be found here; observant readers will quickly notice a problem with it, but we can easily fix that:

netlab up -d sros -p clab

That is, bring up the same topology, but use Nokia SR-OS devices and Containerlab instead of the defaults.

Topology with removed unnumbered multi-access link

As Ivan explains in his article, OSPF doesn’t work over unnumbered multi-access links, and so Netsim-Tools complains and stops you from wasting more time.

After the nodes boot (and adding support for OVS bridges), we Continue reading

Latest 5G specs highlight IoT support, better spectrum efficiency

The latest 5G technical specifications from an overarching standards organization sets a roadmap for development that addresses streamlined IoT support, AI/machine learning, and more efficient use of wireless spectrum.The 3rd Generation Partnership Project (3GPP), a group of seven organizations developing telecom standards, has issued Release 18 of the specs on both 5G systems architecture and radio access networks.“This is deciding on which project the 3GPP ecosystem is going to work on, and how far the scope of each project needs to go,” said Qualcomm senior director of technical marketing Danny Tseng. Qualcomm is a member of 3GPP and an important contributor to 5G development.To read this article in full, please click here

Tech Bytes: Embracing Policy-Driven Networks To Support Hybrid Work (Sponsored)

Today on the Tech Byte podcast we discuss redefining networks and policy in today’s hybrid world–that is, a network that needs to be available anywhere, anytime, anyhow, and any way. Aruba is our sponsor and we’re joined by James Robertson, CTO Advisor and Technology Strategist in the Office of the CTO.

The post Tech Bytes: Embracing Policy-Driven Networks To Support Hybrid Work (Sponsored) appeared first on Packet Pushers.

Marvell’s OCTEON 10 Challenges All Comers For DPU Supremacy

This article was originally posted on the Packet Pushers Ignition site on July 9, 2021. The ascendance of Software Defined Networking (SDN) has catalyzed a renaissance in specialized hardware designed to accelerate and offload workloads from general-purpose CPUs. Decoupling network transport and services via software-defined abstraction layers lets a new generation of programmable networking hardware […]

The post Marvell’s OCTEON 10 Challenges All Comers For DPU Supremacy appeared first on Packet Pushers.

Redis Pub/Sub vs. Apache Kafka

Redis is the “Swiss Army knife” of it’s often used for caching, but it does even more. It can also function as a loosely coupled distributed message broker, so in this article, we’ll have a look at the original Redis messaging approach, Redis Pub/Sub, explore some use cases and compare it with Apache Kafka. 1. Redis Pub/Sub A Beatles-inspired submarine cocktail. Evlakhov Valerii The theme of “pub” pops up frequently in my articles. In a previous article, I wrote about a conversation in an outback pub, “

Network Break 364: Oracle Acquires Federos For Network Assurance; Google Snags Security Startup Siemplify

Take a Network Break! This week we examine Oracle's purchase of network assurance vendor Federos, discuss why Cisco has added a service mesh manager to its Intersight Kubernetes service, explore why some users are frustrated with a crypto-miner in NortonLifelock's anti-virus software, and cover more tech news.

The post Network Break 364: Oracle Acquires Federos For Network Assurance; Google Snags Security Startup Siemplify appeared first on Packet Pushers.

DDoS Attack Trends for Q4 2021

DDoS Attack Trends for Q4 2021

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DDoS Attack Trends for Q4 2021

The first half of 2021 witnessed massive ransomware and ransom DDoS attack campaigns that interrupted aspects of critical infrastructure around the world (including one of the largest petroleum pipeline system operators in the US) and a vulnerability in IT management software that targeted schools, public sector, travel organizations, and credit unions, to name a few.

The second half of the year recorded a growing swarm of one of the most powerful botnets deployed (Meris) and record-breaking HTTP DDoS attacks and network-layer attacks observed over the Cloudflare network. This besides the Log4j2 vulnerability (CVE-2021-44228) discovered in December that allows an attacker to execute code on a remote server — arguably one of the most severe vulnerabilities on the Internet since both Heartbleed and Shellshock.

Prominent attacks such as the ones listed above are but a few examples that demonstrate a trend of intensifying cyber-insecurity that affected everyone, from tech firms and government organizations to wineries and meat processing plants.

Here are some DDoS attack trends and highlights from 2021 and Q4 ‘21 specifically:

Ransom DDoS attacks

How to buy enterprise firewalls

Enterprise firewalls have been the quintessential security device for decades, standing guard at the perimeter, inspecting all inbound and outbound traffic for malware. So, what happens to firewalls as the perimeter fades away? They evolve.To read this article in full, please click here(Insider Story)

Hybrid cloud demands new tools for performance monitoring

Network performance monitoring has become more complex now that companies have more workloads in the cloud, and network teams are finding visibility into the cloud isn’t on par with what they have into their on-prem resources. Tech Spotlight: Hybrid Cloud Hybrid cloud hurdles — and how to address them (CIO) 5 top hybrid cloud security challenges (CSO) 16 irresistible cloud innovations (InfoWorld) How to choose a SaaS management platform (Computerworld) Migration to the cloud introduced infrastructure that isn’t owned by the organization, and a pandemic-driven surge in remote work is accelerating the shift to the cloud and an associated increase in off-premises environments. Container-based applications deployed on cloud-native architectures further complicate network visibility. For these reasons and more, enterprises need tools that can monitor not only the data center and WAN but also the internet, SaaS applications and multiple providers’ public cloud operations.To read this article in full, please click here

The cloud comes down to earth

The cloud is no longer some distant, separate place. Yes, Amazon, Microsoft, and Google maintain unimaginably vast expanses of servers in cloud data centers around the world – as do thousands of SaaS providers. But those clouds and the services they deliver have become so entwined with customers’ on-prem operations, they’re now vital components of almost every enterprise IT estate.This intermingling takes many forms. For starters, Amazon, Microsoft, and Google now enable you to snap off a piece of their platforms in the form of racks of managed servers that live in your data center, preloaded with the same software that powers public clouds. Some of these on-prem cloud outposts can offer access to the gamut of services hosted by the cloud mothership.To read this article in full, please click here

How to shop for firewalls

Enterprise firewalls have been the quintessential security device for decades, standing guard at the perimeter, inspecting all inbound and outbound traffic for malware. So, what happens to firewalls as the perimeter fades away? They evolve.Today’s firewalls are an essential piece of the enterprise security puzzle. They’ve become the foundational device upon which security vendors have stacked all of their advanced features. Cloud-based, next-generation firewalls (firewall-as-a-service) are a core component of any secure access service edge (SASE) deployment. VPN remote access for work-at-home employees typically terminates at a firewall. And firewalls play a key role in zero-trust network access (ZTNA), serving as the device that enforces access control policies and network segmentation rules.To read this article in full, please click here

How to buy enterprise firewalls

Enterprise firewalls have been the quintessential security device for decades, standing guard at the perimeter, inspecting all inbound and outbound traffic for malware. So, what happens to firewalls as the perimeter fades away? They evolve.Today’s firewalls are an essential piece of the enterprise security puzzle. They’ve become the foundational device upon which security vendors have stacked all of their advanced features. Cloud-based, next-generation firewalls (firewall-as-a-service) are a core component of any secure access service edge (SASE) deployment. VPN remote access for work-at-home employees typically terminates at a firewall. And firewalls play a key role in zero-trust network access (ZTNA), serving as the device that enforces access control policies and network segmentation rules.To read this article in full, please click here

How to shop for firewalls

Enterprise firewalls have been the quintessential security device for decades, standing guard at the perimeter, inspecting all inbound and outbound traffic for malware. So, what happens to firewalls as the perimeter fades away? They evolve.Today’s firewalls are an essential piece of the enterprise security puzzle. They’ve become the foundational device upon which security vendors have stacked all of their advanced features. Cloud-based, next-generation firewalls (firewall-as-a-service) are a core component of any secure access service edge (SASE) deployment. VPN remote access for work-at-home employees typically terminates at a firewall. And firewalls play a key role in zero-trust network access (ZTNA), serving as the device that enforces access control policies and network segmentation rules.To read this article in full, please click here

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