• Using SSH to Access the Command Line of a Remote Host (12/14)
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    Using SSH to Access the Command Line of a Remote Host (12/14)

    Hey guys, in this video it’s all about SSH. So, first what is SSH? It’s an abbreviation that stands for Secure Shell and it basically allows you to access the shell or the command line of a remote host that has an SSH server setup. So, in one of the previous videos I connected via SSH to my own server and so I’m gonna do that again, and I’m going to explain exactly what I’m doing as I’m doing it. So, the way to get connected to a remote host through command line is using the “ssh” command, and then the only argument it’s gonna take is the connection string.…

  • Tim Berners-Lee: The next Web of open, linked data
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    Tim Berners-Lee: The next Web of open, linked data

    Time flies. It’s actually almost 20 years ago when I wanted to reframe the way we use information, the way we work together: I invented the World Wide Web. Now, 20 years on, at TED, I want to ask your help in a new reframing. So going back to 1989, I wrote a memo suggesting the global hypertext system. Nobody really did anything with it, pretty much. But 18 months later — this is how innovation happens — 18 months later, my boss said I could do it on the side, as a sort of a play project, kick the tires of a new computer we’d got. And so he…

  • Using the Traceroute Command to Track Server Requests (9/14)
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    Using the Traceroute Command to Track Server Requests (9/14)

    Hey guys, we’re about to talk about the traceroute command and what it does why you use it, but first we need to install that program. So, just come along with me run “sudo apt-get install traceroute” and it will fetch that from the repositories and install it for us, and when it’s done we can run the command. So, run “traceroute” all one word and then the domain that you want to trace the route to, and it’s gonna spit out every server that the request jumps from and to in order to get to Google’s server. When you see “* * *” it means the request has times…

  • PaaS Explained
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    PaaS Explained

    Hi, I’m Tessa Rodes and I’m a designer on IBM Cloud and today we’re going to talk about Platform as a Service, and it’s hard to define Platform as a Service without talking about its neighbors, Infrastructure as a Service, or IaaS, and Software as a Service, or SaaS. So, let’s start with the foundation here with IaaS. IaaS is a set of compute, networking, and storage resources that have been virtualized by a vendor so that a user can access and configure them any way they want. In design we have a concept of talking about users called personas, and the persona for IaaS is a System Admin, or…

  • RADIUS server – Packet Tracer
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    RADIUS server – Packet Tracer

    How’re we doing, everyone? It’s John again. I’m gonna go quick video on AAA, which is Authentication, Authorization and Accounting. In this video I’m going to do a short video, and configure a RADIUS server. So let’s start. As you can see, the basic topology is quite simple, we’ve got 2 routers here, and a Server up here. They’re all in the same network. The addresses are 192.168.1.1, 192.168 1.2, and 192.168 1.3 at the top, so let’s kick off, and just check did we actually have connectivity between the devices, so ping 192.168.1.2, that’s fine, and let’s ping the server. That’s also fine. So the first thing that we…

  • Windows Server 2019 Networking: RSC in the vSwitch
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    Windows Server 2019 Networking: RSC in the vSwitch

    Hi, my name is Dan Cuomo and I’m a Program Manager on the Windows Core Networking team. In this video we’ll talk about a new feature in Windows Server 2019 called RSC in the vSwitch. RSC in the vSwitch improves performance when processing network traffic by coalescing multiple TCP segments into fewer but larger segments. depending on the scenario this results in lower host CPU utilization or higher throughput to the virtual NIC. Now let’s take a look at how RSC in the vSwitch benefits low throughput scenarios. At the top of the video we have a virtual machine that will be receiving network traffic from another host you’ll be…

  • Introduction to Cloud Computing
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    Introduction to Cloud Computing

    Alright, we’re gonna talk about cloud computing. Specifically we’re going to define what is cloud computing, why cloud computing exists, and what needs it fills. Who provides it — who are some of the biggest providers of cloud computing tools and solutions, and a little bit about what the different types of cloud computing are. First of all, what is cloud computing? This is a very popular sticker. There’s actually a blog post about how popular the sticker is–it’s that popular. And it says “There is no cloud, it’s just someone else’s computer.” And that is absolutely true. Cloud computing is essentially renting storage, computing power, or servers, from somebody…

  • An Introduction to Software Defined Networking with Windows Server 2016
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    An Introduction to Software Defined Networking with Windows Server 2016

    Welcome to Microsoft Mechanics. Coming up, we look at the new software defined networking capabilities in Windows Server 2016. We’ll show you how you can use SDN to dynamically create, secure, and connect your network to meet the evolving needs of your apps, speed of the deployment of your workload, and contain security vulnerabilities from spreading across your network. All while reducing your overall infrastructure cost. Microsoft Mechanics I’m joined by Greg Cusanza from the Software-Defined Networking Team. Welcome. Thanks Matt, it’s great to be here. Software-defined Networking has been talked about for a while, but what are we really trying to solve for here? Well apps are innovating at…