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Many of today’s cutting-edge technologies such as cloud computing, edge computing and microservices, owe their start to the concept of the virtual machine—separating operating systems and software instances from the underlying physical computer. What is a virtual machine? A virtual machine (VM) is software that runs programs or applications without being tied to a physical machine. In a

What is DNS? The Domain Name System (DNS) is one of the foundations of the internet, working in the background to match the names of web sites that people type into a search box with the corresponding IP address, a long string of numbers that no one could be expected to remember. It’s still possible for someone to type an IP address into a browser to reach a website, but most people want an internet address to consist of easy-to-remember words, called domain names. (For example, Network World.) What is D

IBM has successfully overturned a $1.6 billion ruling that it improperly replaced mainframe software from rival BMC at AT&T. A US Appeal Court this week overruled a lower court’s judgement in deciding that “BMC lost out to IBM fair and square.”  AT&T “independently decided” to displace BMC software from its mainframe environment, the three-judge appeal court panel ruled. Mainframes

Cisco and Red Hat are once again expanding their 15-year-old strategic partnership, this time to bolster networking, AI and cloud integrations. At the Red Hat Summit 2024 next week, the two vendors will demonstrate how tightly integrating Cisco Application Centric Infrastructure (ACI) with Red Hat’s OpenShift can help customers improve their network operations. Cisco ACI implements the company’s software-defined networking (SDN) technology, designed to automate data center and cloud network infrastructure via software-based policy models and centralized management, according to Cisco. 

In the competitive realm of artificial intelligence, dominated by Nvidia’s formidable GPUs, a bold newcomer is betting on a different contender. Nscale, a little-known GPU cloud provider based in Norway, has launched a new AI Cloud Services platform built around AMD’s MI300X accelerators. The move is a bold gambit to challenge Nvidia’s dominance and offer customers a potentially cheaper and greener alternative for running AI workloads in the cloud. For buyers of cloud services and builders of AI models,

Palo Alto Networks has extended its Prisma SASE (secure access service edge) package to better secure managed and unmanaged devices and bolster the speed and protection of distributed enterprise applications. The latest version of Prisma SASE, version 3.0, includes a number of core upgrades, including the ability to secure unmanaged devices through a new, integrated Prisma Access Browser that features least privilege access, constant security inspection, and other zero-trust capabilities. The Prisma SASE offering combines Palo Alto’s SD-WAN technolo

We’ve all probably seen the && and || operators in use from time to time. These AND and OR equivalents are often used in scripts to make decisions about what happens next. In this post, we’ll take a look at how they work at a very basic level and some ways they are often used in scripts. Using || To begin, the || (OR) operator aligns itself with the use of the word “or” in common day English. However, it makes a clear distinction. If the command on the left side of the || is successfully run, the command on the right is not run. Run the command below and yo

Cisco is part of a group that backed security startup Corelight with $150 million in Series E funding this week. Corelight’s latest investment round is led by its first capital investor, Accel, with additional funding from Cisco Investments and CrowdStrike Falcon Fund. The new funding will enable Corelight to further develop its technology, which transforms network and cloud activity as well as packet capture into evidence that security teams use to proactively hunt for threats, accelerate response to incidents, gain network visibility, and create powerful analytics results, according to the startup. Corelight is already used by cyberse

F5 is enhancing its tools for enterprise customers that are struggling to combat rising security threats against on-premise and cloud-based applications. The vendor announced web application scanning for its core Distributed Cloud Services, new firewalls for its BIG-IP intelligent traffic management and load balancing service, and NGINX App Protect for open source deployments. F5’s Distributed Cloud Service is a SaaS-based platform that enables application management, infrastructure management, and security services across customers’ public cloud, priv

Arista Networks is bolstering a key part of its security software with new features that help customers reduce the blast radius of security breaches by setting up “microperimeters” to restrict lateral movement in campus and data center networks. The new features are in the vendor’s Macro-Segmentation Service (MSS) software, which is an extension of its core Extensible Operating System (EOS) software. They’re tightly integrated with the company’s CloudVision management platform, which provides wired and wireless visibility, orche