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• Snort

  Snort is an open source network intrusion detection system (NIDS) created by Sourcefire founder and former CTO Martin Roesch. Continue Reading

• token ring

  A token ring is a data link for a local area network (LAN) in which all devices are connected in a ring or star topology and pass one or more tokens from host to host. Continue Reading

• How pub/sub messaging works, and why it matters today

  While pub/sub has been a standard messaging approach for decades, it's arguably more important than ever for developers to understand what it is, how it works and why it matters. Continue Reading

• Static vs. dynamic routing: What is the difference?

  Static routing uses preconfigured routes to send traffic to its destination, while dynamic routing uses algorithms to determine the best path. How else do the two methods differ? Continue Reading

• In search of AWS Solutions Architect preparation?

  Think you're ready for the AWS Certified Solutions Architect certification exam? Test your knowledge with these 12 questions, and assess your test readiness. Continue Reading

• Definitions to Get Started

  • What is an API (application programming interface)?
  • What is a SAN? Ultimate storage area network guide
  • What is a data retention policy?
  • What is multi-access edge computing? Benefits and use cases

  • What is 5G?
  • What is 6G? Overview of 6G networks & technology
  • phase-locked loop (PLL)
  • What is millimeter wave (mmWave)?

  View All Definitions

• Amazon API Gateway

  Amazon API Gateway is an Amazon Web Services (AWS) feature that enables developers to connect non-AWS applications to AWS back-end resources, such as servers and code.Continue Reading

• poison reverse

  In a computer network that uses the Routing Information Protocol (RIP) or other distance vector routing protocol, poison reverse is a loop avoidance process.Continue Reading

• Get Azure Fundamentals exam practice with this quick quiz

  Getting officially certified in MS Azure Fundamentals is a career-booster. This 12-question quiz will help assess your readiness for this key professional exam.Continue Reading

• 12 official practice questions for the CCNA 200-301 exam

  These practice questions for CCNA 200-301 lay out what readers need to know about network security and IP routing in the LAN, from 'CCNA 200-301 Official Cert Guide, Volumes 1 and 2.'Continue Reading

• Manage OneDrive for Business storage limits, step by step

  OneDrive for Business is an important cloud storage element for Microsoft 365 users. Admins should be ready to adjust the storage limits for their users.Continue Reading

• Electric plugs for each country

  Discover the electrical plugs, outlets and voltages used in different countries around the world.Continue Reading

• pair programming

  Pair programming is an Agile software development technique originating from Extreme programming (XP) in which two developers team together and work on one computer.Continue Reading

• Get the right components for your home lab VM

  Home lab VM setups are helpful to test technology and build VM management skills. Be sure to evaluate RAM, CPU, network speeds and management software for a successful deployment.Continue Reading

• Five-nines availability: What it really means

  Learn what five-nines availability means and discover the steps enterprises should take to make sure network services are fully accessible.Continue Reading

• The 6 non-negotiable REST architecture constraints

  While REST-centric design isn't necessarily hard, there are some non-negotiable rules when it comes to resource provisioning. Here are six all architects should know.Continue Reading

• Avoid data overflows with PowerShell Remove-Item

  The cmdlet helps delete misplaced files and outdated documents, but you should tune the code to optimize execution and avoid errors when the work entails many files and folders.Continue Reading

• How to calculate network bandwidth requirements

  Figuring out how to calculate bandwidth requirements is vital to ensuring your network runs smoothly, and it's best to use the correct formula from the beginning.Continue Reading

• 7 infrastructure as code books for IT pros to dig into

  Need some reading material? Check out these books on infrastructure as code -- and popular IaC tools -- to pick up some new skills on the IT management practice.Continue Reading

• A beginner's guide to a multistage Docker build

  Multistage builds help you manage Dockerfile size during container proliferation. Get the process right with the necessary guidelines and ideal use cases.Continue Reading

• Get a grasp on using group managed service accounts

  When you create a group managed service account, it relieves some administrative duties and bolsters the security related to passwords for services in a Windows environment.Continue Reading

• Tips to launch VirtualBox nested virtualization

  Nested VMs make it easy to expand VM capacity without additional hardware. Take a look at the process to avoid any major issues and get these VMs up and running.Continue Reading

• bus network

  A bus network is a local area network (LAN) topology in which each node -- a workstation or other device -- is connected to a main cable or link called a bus.Continue Reading

• Amazon Athena

  Amazon Athena is a service that enables a data analyst to perform interactive queries in the web-based cloud storage service, Amazon Simple Storage Service (S3).Continue Reading

• flooding (network)

  In a computer network, flooding occurs when a router uses a non-adaptive routing algorithm to send an incoming packet to every outgoing link except the node on which the packet arrived.Continue Reading

• ping sweep (ICMP sweep)

  A ping sweep (also known as an ICMP sweep) is a basic network scanning technique used to determine which of a range of IP addresses map to live hosts (computers).Continue Reading

• cognitive radio (CR)

  Cognitive radio (CR) is a form of wireless communication in which a transceiver can intelligently detect which communication channels are in use and which ones are not.Continue Reading

• CRC-4 (Cyclic Redundancy Check 4)

  CRC-4 (Cyclic Redundancy Check 4) is a form of cyclic redundancy checking -- a method of checking for errors in transmitted data -- that is used on E1 trunk lines.Continue Reading

• maximum transmission unit (MTU)

  The maximum transmission unit (MTU) is the largest size frame or packet -- in bytes or octets (eight-bit bytes) -- that can be transmitted across a data link.Continue Reading

• bare-metal cloud

  Bare-metal cloud is a public cloud service that offers dedicated hardware resources without any installed operating systems or virtualization infrastructure.Continue Reading

• Uuencode (Uuencode/Uudecode)

  Uuencode (also called Uuencode/Uudecode) is a popular utility for encoding and decoding files exchanged between users or systems in a network.Continue Reading

• crosstalk

  Crosstalk is a disturbance caused by the electric or magnetic fields of one telecommunication signal affecting a signal in an adjacent circuit.Continue Reading

• race condition

  A race condition is an undesirable situation that occurs when a device or system attempts to perform two or more operations at the same time, but because of the nature of the device or system, the operations must be done in the proper sequence to be...Continue Reading

• Amazon Machine Image (AMI)

  An Amazon Machine Image (AMI) is a master image for the creation of virtual servers -- known as EC2 instances -- in the Amazon Web Services (AWS) environment.Continue Reading

• Invest in cloud security to future-proof your organization

  The cloud has opened many opportunities for enterprises to maintain operations during the pandemic, but it has also created numerous security challenges that must be addressed.Continue Reading

• NetBIOS (Network Basic Input/Output System)

  NetBIOS (Network Basic Input/Output System) is a network service that enables applications on different computers to communicate with each other across a local area network (LAN).Continue Reading

• How to migrate VMware VMs to AWS with ease

  You can complete a VMware to AWS migration with Amazon's CLI tool and a few commands, but a migration with large data sets requires preparation and testing.Continue Reading

• Amazon Glacier

  Amazon Glacier, also known as Amazon Simple Storage Service (S3) Glacier, is a low-cost cloud storage service for data with longer retrieval times offered by Amazon Web Services (AWS).Continue Reading

• How to build a CI/CD pipeline with Azure and GitHub

  Some organizations need to build and deploy apps to specific cloud platforms. This walkthrough shows you step by step how to create a CI/CD pipeline using GitHub and Azure DevOps.Continue Reading

• AWS Outposts: What you need to know to get started

  AWS Outposts is a managed device that brings Amazon cloud services into your data center. Review its requirements, use cases and a step-by-step guide to the installation process.Continue Reading

• near-end crosstalk (NEXT)

  Near-end crosstalk (NEXT) is an error condition that can occur when connectors are attached to twisted pair cabling.Continue Reading

• reverse-engineering

  Reverse-engineering is the act of dismantling an object to see how it works.Continue Reading

• Don't limit observability to 3 pillars

  Logs, metrics and tracing are the pillars of observability but fall short in system health comprehension. Learn why data source tracking gives better insight into your environment.Continue Reading

• Amazon Lightsail

  Amazon Lightsail is an Amazon cloud service that offers bundles of cloud compute power and memory for new or less experienced cloud users.Continue Reading

• 5 proven patterns for resilient software architecture design

  Maintaining a resilient software architecture is a constant battle. Luckily, there are a few design methods that can help teams instill the reliability they desperately need.Continue Reading

• spectrum analyzer

  A spectrum analyzer is a device that measures and displays signal amplitude (strength) as it varies by frequency within its frequency range (spectrum).Continue Reading

• 10 Gigabit Ethernet (10 GbE)

  10 Gigabit Ethernet (10 GbE) is a telecommunication technology that offers data speeds up to 10 billion bits per second.Continue Reading

• Easily transfer VMs to the cloud with Microsoft Azure Migrate

  It takes time to plan, assess and set up a VM migration. Microsoft's Azure Migrate gives you a central dashboard to efficiently get your VMware and Hyper-V VMs into the cloud.Continue Reading

• How to build VMware HCI on a budget

  HCI is a costly investment that can streamline networking, compute and management in your data center. Consider affordable alternatives to expensive HCI before adoption.Continue Reading

• cloud storage

  Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, managed, backed up and made available to users over a network (typically the internet).Continue Reading

• mesh network topology (mesh network)

  A mesh network is a network in which devices -- or nodes -- are linked together, branching off other devices or nodes.Continue Reading

• Build apps with these cloud architecture diagram examples

  Cloud changes the way IT teams build an application's architecture. Follow these diagram examples, using top cloud providers, to help guide your project.Continue Reading

• How to create Amazon EC2 security groups

  Before setting up security groups for AWS resources, review rules, requirements and potential missteps. Follow these steps to properly configure security groups for EC2 instances.Continue Reading

• Application Load Balancer

  The Application Load Balancer is a feature of Elastic Load Balancing that allows a developer to configure and route incoming end-user traffic to applications based in the AWS public cloud.Continue Reading

• meet-in-the-middle attack

  Meet-in-the-middle is a known plaintext attack that can greatly reduce the number of brute-force permutations required to decrypt text that has been encrypted by more than one key.Continue Reading

• Amazon QuickSight

  Amazon QuickSight is a machine learning-powered business intelligence service built for the cloud under the Amazon Web Services (AWS) umbrella.Continue Reading

• virtual routing and forwarding (VRF)

  Virtual routing and forwarding (VRF) is a technology included in Internet Protocol (IP) network routers that enables multiple instances of a routing table to exist in a virtual router and work simultaneously.Continue Reading

• Time Division Multiple Access (TDMA)

  Time Division Multiple Access (TDMA) is a digital modulation technique used in digital cellular telephone and mobile radio communication.Continue Reading

• Run servers from anywhere with Hyper-V remote management

  Microsoft's Hyper-V Manager makes it easy to set up remote options and standardizes hypervisor resource allocation and deployments.Continue Reading

• HDLC (High-level Data Link Control)

  HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between network points (sometimes called nodes).Continue Reading

• Signaling System 7 (SS7)

  Signaling System 7 (SS7) is an international telecommunication protocol standard that defines how the network elements in a public switched telephone network (PSTN) exchange information and control signals.Continue Reading

• IEEE 802.3

  802.3, or IEEE 802.3, is a working group of standard specifications for Ethernet, a method of packet-based physical communication in a local area network maintained by the Institute of Electrical and Electronics Engineers.Continue Reading

• Amazon Trust Services

  Amazon Trust Services is a certificate authority created and operated by Amazon Web Services.Continue Reading

• bits per second (bps or bit/sec)

  In data communications, bits per second (bps or bit/sec) is a common measure of data speed for computer modems and transmission carriers.Continue Reading

• Amazon Cognito

  Amazon Cognito is an Amazon Web Services product that controls user authentication and access for mobile applications on internet-connected devices.Continue Reading

• chaos engineering

  Chaos engineering is the process of testing a distributed computing system to ensure that it can withstand unexpected disruptions.Continue Reading

• When should you use AWS IAM roles vs. users?

  Access management is critical to securing the cloud. Understand the differences between AWS IAM roles and users to properly restrict access to AWS resources.Continue Reading

• 9 iPaaS use cases for the enterprise

  IPaaS connects enterprise applications and data, which encompasses on-premises systems to the cloud and IoT. Review these iPaaS examples to understand how it all works.Continue Reading

• 9 advanced IT certifications for operations experts

  To be an IT expert requires dedication to the ever-changing technology and processes. Here's a list of certifications to demonstrate that skill and experience.Continue Reading

• Use PnP PowerShell commands to fortify SharePoint management

  A new PowerShell module pares down the work required to handle administrative tasks on several Office 365 services, such as SharePoint Online and Microsoft Teams.Continue Reading

• Build self-healing IT systems for data resilience

  With an autonomous approach to system infrastructure, companies can save time and costs. Learn why IT admins should adopt this type of automation and how to implement it.Continue Reading

• CCNA certification

  Cisco Certified Network Associate (CCNA) is a technical certification that Cisco offers for early-career networking professionals.Continue Reading

• SCCM driver management strategies for the modern world

  Now that more users work remotely, administrators should evolve with the times and understand the range of options to deploy device drivers more efficiently.Continue Reading

• Use AWS Glue workflows to convert semistructured data

  New to AWS Glue? Learn about the tool and how to incorporate it into DevOps workflows with examples that look at data transformation and machine learning.Continue Reading

• zero-touch provisioning (ZTP)

  Zero-touch provisioning (ZTP) is a method of setting up devices that automatically configures the device using a switch feature.Continue Reading

• Why and how to implement NVMe power management

  Understand how to use NVMe built-in power management features to conserve energy, manage heat and, in the case of mobile devices, extend operating times.Continue Reading

• How to build a CI/CD pipeline -- with examples

  Ready to set up a CI/CD pipeline? Follow these general steps, with guidance toward specific examples depending upon your own specific needs and resources.Continue Reading

• Try before you buy with free tiers in cloud

  Cloud services aren't cheap, and you don't want to get stuck using one that isn't the right fit. This is where the 'try before you buy' options come in.Continue Reading

• An introduction to Go network programming

  This chapter excerpt from 'Network Programming with Go' dives into logging and metrics, while also providing Go code examples and best practices.Continue Reading

• Best practices and strategies for logging in Go

  Author Adam Woodbeck discusses how network teams can use the Go programming language for logging and metrics. One tip: Log prudently, and use metrics generously.Continue Reading

• Learn how to configure NSX firewall rules

  VMware NSX users can configure firewall rules into specific policies to protect individual VMs, regardless of their location in the virtual infrastructure.Continue Reading

• How to secure your home Wi-Fi network in 7 steps

  When securing your home Wi-Fi, update devices regularly, change passwords consistently, turn off unused services and inspect outdoor network equipment.Continue Reading

• Open source IoT tools to choose in 2021

  Open source platforms can make developing IoT deployments easier, but organizations have multiple options to choose from, including these seven.Continue Reading

• AWS CloudWatch

  Amazon CloudWatch is a component of Amazon Web Services that provides monitoring for AWS resources and the customer applications running on the Amazon infrastructure.Continue Reading

• Learn Docker best practices with this interactive book

  The author of The Docker Workshop, Vincent Sesto, discusses Docker's ingenuity and gives tips to IT admins on the leading container creation technology in this Q&A.Continue Reading

• How to use mind maps for software testing

  Mind mapping is a visual way to brainstorm test ideas. Learn how to create and use mind maps to improve software quality.Continue Reading

• How to auto scale Kubernetes pods for microservices

  In Kubernetes, autoscaling prevents over provisioning resources for microservices running in a cluster. Follow this tutorial to set up horizontal and vertical scaling.Continue Reading

• Understand cloud abstraction for your IT needs

  Cloud users must select a cloud abstraction layer that meets their business requirements. Consider factors such as level of control and security when choosing SaaS, PaaS or IaaS.Continue Reading

• Hybrid network vs. hybrid network infrastructure

  Hybrid networks and hybrid network infrastructure blend different kinds of equipment, geographic locations, network ownership and technology disciplines.Continue Reading

• Get started on AWS with this developer tutorial for beginners

  Kick-start your AWS cloud developer journey with this breakdown of essential services, deployment options and other cloud basics you'll need to get started.Continue Reading

• What is webhook?

  A webhook is a software architecture approach that allows applications and services to submit a web-based notification to other applications whenever a specific event occurs.Continue Reading

• Combine PowerShell and Docker to simplify testing across OSes

  Run PowerShell scripts in Docker containers to manage multiple environments from the same system. Follow this tutorial to see how to test Linux environments with a Windows host OS.Continue Reading

• A quick rundown of multi-runtime microservices architecture

  Learn the basics about a multi-runtime architecture, and the two-component approach it takes to provide a standard for abstracted microservice-messaging processes.Continue Reading

• How to integrate Active Directory and vCenter Server

  Admins who connect AD with vCenter Server can grant users authorization for and access to VMs, storage and compute resources in vSphere. To do so, follow these configuration steps.Continue Reading

• How software testing certifications can boost your career

  How can software testing certifications give QA professionals a leg up in their careers? Learn how in this overview, as well as what certification types testers should consider.Continue Reading

• How to deploy VMware Folding@Home Fling

  To deploy VMware's Fling appliance and use the Folding@Home software, you must have at least vCenter Server 6, a username and passkey, an IP address, a gateway and a DNS.Continue Reading

• Tips to prepare for Google Cloud Architect certification

  Author of 'Google Cloud Certified Professional Cloud Architect All-in-One Exam Guide' Iman Ghanizada explains how to approach the cloud architect certification and role in this Q&A.Continue Reading

• 4 attributes key to network-as-a-service model

  For a network-as-a-service model to work for the enterprise, it needs to offer four key attributes: an application-specific, elastic, secure and personalized VPN.Continue Reading

• Guidelines to implement storage for AI workloads

  Organizations with AI-enabled projects need an effective way to store, retrieve and share massive amounts of complex data. These tips will help meet AI data storage challenges.Continue Reading

• How to use GitHub vRA integration to keep track of blueprints

  VMware vRA Cloud Assembly supports integration with a GitHub respository. Use this setup to maintain version control of vRA deployments.Continue Reading

• Generate a Windows file server audit via PowerShell

  Learn how to generate a detailed report that uncovers unusual activity by users on a Windows file share without having to manually investigate every file and folder.Continue Reading