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Category Archives for "Networking"

Is OpenFlow Still Kicking?

Continuing the how real is the decade-old SDN hype thread, let’s try to figure out if anyone still uses OpenFlow. OpenFlow was declared dead by the troubadour of the SDN movement in 2016, so it looks like the question is moot. However, nothing ever dies in networking (including hop-by-hop IPv6 extension headers), so here we go.

Why Would One Use OpenFlow?

Ignoring for the moment the embarrassing we solved the global load balancing with per-flow forwarding academic blunders1, OpenFlow wasn’t the worst tool for programming forwarding exceptions (ACL/PBR) into TCAM.

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Practical OpenStack #005. How Containers help to Build OpenStack

Hello my friend,

Maintaining application in Linux may be a challenging task, especially when you have a lot of them running on a single host. One of the problems contributing to it is a dependencies management. OpenStack, in its turn, consists of a huge amount of services, which needs to run together. Containers help to solve the problem of a dependencies’ management, and, therefore, helps to setup OpenStack. In this video you will learn how that happens

Don’t Forget to Learn How to Automate All the Things

Video to the Topic

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If you need a trusted and experienced partner to automate your network and IT infrastructure, get in touch with us.

P.S.

If you have further questions or you need help with your networks, we are happy to assist you, just send us a message. Also don’t forget to share the article on your social media, if you like it.

BR,

Anton Karneliuk

Pure Storage, Snowflake partner for on-premises data warehousing

Pure Storage and data-warehouse developer Snowflake have partnered to bring Snowflake’s cloud-based data-warehousing technology on-premises.Under the new relationship, the Snowflake Data Cloud compute engine will be run on Pure Storage’s FlashBlade file- and object-storage array. Pure has another line of storage devices, called FlashArray, but those serve a different purpose, notes Rob Lee, CTO of Pure Storage.“I look at FlashArray as our scale-up platform, and FlashBlade as our scale out platform,” he said. “We tend to see FlashArray applied much more to transactional database-type workloads, like OLTP, trading databases, billing databases, where you have high update rates, and we tend to see FlashBlade applied to data warehouses or analytics types of environments where you don't have a ton of transactional change, but you've got a lot of analysis, a lot of read-type workloads,” he said.To read this article in full, please click here

Pure Storage, Snowflake partner for on-premises data warehousing

Pure Storage and data-warehouse developer Snowflake have partnered to bring Snowflake’s cloud-based data-warehousing technology on-premises.Under the new relationship, the Snowflake Data Cloud compute engine will be run on Pure Storage’s FlashBlade file- and object-storage array. Pure has another line of storage devices, called FlashArray, but those serve a different purpose, notes Rob Lee, CTO of Pure Storage.“I look at FlashArray as our scale-up platform, and FlashBlade as our scale out platform,” he said. “We tend to see FlashArray applied much more to transactional database-type workloads, like OLTP, trading databases, billing databases, where you have high update rates, and we tend to see FlashBlade applied to data warehouses or analytics types of environments where you don't have a ton of transactional change, but you've got a lot of analysis, a lot of read-type workloads,” he said.To read this article in full, please click here

Suprise! The internet of things doesn’t necessarily include the internet

When the now-familiar concept of the Internet of Things (IoT) was new, what we really were envisioning a massive deployment of “things”, mostly sensors, connected directly to the internet and, like the internet, available to many companies to form the basis for new applications. Neither the business model nor the privacy/security issues of that approach were easily validated, so we’ve fallen back to something that largely takes the internet out of IoT. But what replaces it?Answer: The Network of Things or NoT, and if you’ve never heard of that concept, you’re at the first step of understanding the problem.To read this article in full, please click here

Tech Bytes: Solving Service Networking Problems With HashiCorp’s Consul (Sponsored)

Today's sponsored Tech Bytes dives into HashiCorp's Consul product to learn how it’s evolved from its humble beginnings to become a service networking platform with features including a service mesh, service discovery, network infrastructure automation, an API gateway, and more.

The post Tech Bytes: Solving Service Networking Problems With HashiCorp’s Consul (Sponsored) appeared first on Packet Pushers.

EVPN-VXLAN Explainer 3 – BGP UPDATE & Route Type 2

EVPN-VXLAN Explainer 3 - BGP UPDATE & Route Type 2

The story so far

  • In post 1 we looked at VXLAN, an encapsulation type that enables L2 traffic to traverse L3 networks, the use case being virtual overlay networks to provide connectivity to VMs and containers.
  • VXLAN alone uses data plane learning to build a view of the MAC addresses of the clients attached to the network. This can be suboptimal because traffic needs to hit a switch for it to learn a MAC, it is akin to basic L2 switching across the network.
  • EVPN is used as a control plane for VXLAN networks, allowing peers to learn about MACs by advertising them in an extended form of BGP UPDATE.
  • In post 2 we looked at the BGP EVPN session and configuration, now let's move on to advertising some routes.

Example Network - Two peers

The philosophy behind this series is start small and build. With that in mind, I'm going to start with just two EVPN peers, supporting a couple of customer VLANs.

EVPN-VXLAN Explainer 3 - BGP UPDATE & Route Type 2
Figure 1: Two peer network

EVPN Operations

In principle, L2VNI is very similar to the static VXLAN we saw in post 1 of this series. It consists of a Layer 2 segment that can be stretched Continue reading

Internship Experience: Software Development Intern

Internship Experience: Software Development Intern

Before we dive into my experience interning at Cloudflare, let me quickly introduce myself. I am currently a master’s student at the National University of Singapore (NUS) studying Computer Science. I am passionate about building software that improves people’s lives and making the Internet a better place for everyone. Back in December 2021, I joined Cloudflare as a Software Development Intern on the Partnerships team to help improve the experience that Partners have when using the platform. I was extremely excited about this opportunity and jumped at the prospect of working on serverless technology to build viable tools for our partners and customers. In this blog post, I detail my experience working at Cloudflare and the many highlights of my internship.

Interview Experience

The process began for me back when I was taking a software engineering module at NUS where one of my classmates had shared a job post for an internship at Cloudflare. I had known about Cloudflare’s DNS service prior and was really excited to learn more about the internship opportunity because I really resonated with the company's mission to help build a better Internet.

I knew right away that this would be a great opportunity and submitted Continue reading

8 questions to ask vendors about Zero Trust Network Access (ZTNA)

The increased deployment of core business applications in the cloud and the shift to remote work brought on by the pandemic have obliterated any notion of the traditional “corporate moat” style of security.Today’s hybrid workplace, where employees are on the road, working from home and maybe visiting the office once or twice a week, has forced network and security teams to adopt a more flexible approach to managing the network, identities, and authentication.Zero Trust Network Access (ZTNA) has emerged as the preferred approach to address today’s security challenges. The concept is relatively simple: Instead of building a layered perimeter defense of firewalls, IDS/IPSes and anti-virus software, Zero Trust assumes that every user or device is untrusted until it becomes sufficiently verified.To read this article in full, please click here

8 questions to ask vendors about Zero Trust Network Access (ZTNA)

The increased deployment of core business applications in the cloud and the shift to remote work brought on by the pandemic have obliterated any notion of the traditional “corporate moat” style of security.Today’s hybrid workplace, where employees are on the road, working from home and maybe visiting the office once or twice a week, has forced network and security teams to adopt a more flexible approach to managing the network, identities, and authentication.Zero Trust Network Access (ZTNA) has emerged as the preferred approach to address today’s security challenges. The concept is relatively simple: Instead of building a layered perimeter defense of firewalls, IDS/IPSes and anti-virus software, Zero Trust assumes that every user or device is untrusted until it becomes sufficiently verified.To read this article in full, please click here

SDN Controller Taxonomy

Even though Gartner declared SDN obsolete before plateau in their 2021 Networking Hype Cycle, most vendor marketers never got the memo. Anything that interacts with network devices in any way1 is called an SDN controller. Let’s try to throw some minimal amount of taxonomy into that mess based on how these controllers interact with network elements (physical or virtual).

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Google Cloud launches services to bolster open-source security, simplify zero-trust rollouts

Google Cloud is rolling out new security services designed to address enterprise challenges including securing open-source software and accelerating the adoption of zero-trust architectures.At its annual Google Cloud Security Summit, the company said it's building on its Invisible Security effort, which promises to bake security into tools and services that enterprises and other customers use most.One example is a new service called Assured Open Source Software (Assured OSS), which is aimed at making it easier for organizations to securely manage their open-source dependencies."Today patching security vulnerabilities in open source software often feels like a high-stakes game of whack-a-mole: fix one, and two more pop up," wrote Sunil Potti, vice president and general manager of Google Cloud Security, in a blog about the new services. "This helps explain research done by Sonatype software that shows that there’s a 650% year-over-year increase in cyberattacks aimed at open source software (OSS) suppliers."To read this article in full, please click here

Google Cloud boosts open-source security, simplifies zero-trust rollouts

Google Cloud is rolling out new security services designed to address enterprise challenges including securing open-source software and accelerating the adoption of zero-trust architectures.At its annual Google Cloud Security Summit, the company said it's building on its Invisible Security effort, which promises to bake security into tools and services that enterprises and other customers use most.One example is a new service called Assured Open Source Software (Assured OSS), which is aimed at making it easier for organizations to securely manage their open-source dependencies."Today patching security vulnerabilities in open source software often feels like a high-stakes game of whack-a-mole: fix one, and two more pop up," wrote Sunil Potti, vice president and general manager of Google Cloud Security, in a blog about the new services. "This helps explain research done by Sonatype software that shows that there’s a 650% year-over-year increase in cyberattacks aimed at open source software (OSS) suppliers."To read this article in full, please click here

Google Cloud boosts open-source security, simplifies zero-trust rollouts

Google Cloud is rolling out new security services designed to address enterprise challenges including securing open-source software and accelerating the adoption of zero-trust architectures.At its annual Google Cloud Security Summit, the company said it's building on its Invisible Security effort, which promises to bake security into tools and services that enterprises and other customers use most.One example is a new service called Assured Open Source Software (Assured OSS), which is aimed at making it easier for organizations to securely manage their open-source dependencies."Today patching security vulnerabilities in open source software often feels like a high-stakes game of whack-a-mole: fix one, and two more pop up," wrote Sunil Potti, vice president and general manager of Google Cloud Security, in a blog about the new services. "This helps explain research done by Sonatype software that shows that there’s a 650% year-over-year increase in cyberattacks aimed at open source software (OSS) suppliers."To read this article in full, please click here

Google Cloud launches services to bolster open-source security, simplify zero-trust rollouts

Google Cloud is rolling out new security services designed to address enterprise challenges including securing open-source software and accelerating the adoption of zero-trust architectures.At its annual Google Cloud Security Summit, the company said it's building on its Invisible Security effort, which promises to bake security into tools and services that enterprises and other customers use most.One example is a new service called Assured Open Source Software (Assured OSS), which is aimed at making it easier for organizations to securely manage their open-source dependencies."Today patching security vulnerabilities in open source software often feels like a high-stakes game of whack-a-mole: fix one, and two more pop up," wrote Sunil Potti, vice president and general manager of Google Cloud Security, in a blog about the new services. "This helps explain research done by Sonatype software that shows that there’s a 650% year-over-year increase in cyberattacks aimed at open source software (OSS) suppliers."To read this article in full, please click here

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