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In fact, the graphical interface is complete and you can simply navigate by using the arrows. Installing lubutu is going to be fairly easy. To get back to your physical PC, hit the right Ctrl button instead. By clicking in it, you are controlling it and you can’t move the mouse outside. A new window will pop up in a while, where you will see the screen of your Virtual Machine. To start the VM, simply click the Start Icon (the green right arrow). Then, click “OK” and get back to the VirtualBox home. Storage > IDE, Empty > Choose Virtual Optical Disk.

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Of course, it is Open Source and thus free to download. The advantage? It is much smaller and requires fewer resources. It is basically a downsized ubuntu, that still has everything we need. That’s where the Lightweight Ubuntu comes into the picture. We could do that, but why wast resources? In fact, it is sized several GBs and requires precious resources to run as a VM. Ubuntu is probably the easiest to use if you are new to the Linux world, but it doesn’t meet our requirements. Now, we all know that Linux comes in a huge variety of distributions. You can run a lot of stuff on it, and it’s free.

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Now, we need to download an operating system to put in that box. Okay, VirtualBox is just like a Virtual Box, but it’s an empty box. Once you downloaded the right version for you, just follow the installation by going through the classical “Next” – “Next” sequence until you hit the finish button. Consult the VirtualBox official download page to get the version that suits your system. If comes in several versions, depending on your operating system (on your physical device). Download Oracle VirtualBoxĭownloading Oracle VirtualBox is completely free. If you don’t know where to start, we are going to cover it in a second. Since we want to reach as many people as possible with this lab, we are going to use Oracle VirtualBox. While this is the king of advanced stuff, it has a major setback for us: you have to pay for it. Not only it surpasses VirtualBox in terms of features, it is also somewhat more stable. Real men want to use VMWare Workstation, a much better and enterprise-oriented solution.Oracle VirtualBox is a simple solution, it has everything you need to start and it is completely free.Many alternatives exist, but only the two most popular are supported by GNS3.

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You can tell by the name that a VM is not a normal device: it’s virtual! In fact, you need a physical device (your computer) that runs special software to virtualize devices. Starting with VMs in GNS3 There are two types of VMs… In other words, you can really try out many different products, and integrate them with your network. You can have an F5 load balancer in a VM, a Palo Alto or Fortigate firewall, a Juniper Virtual SRX (firewall), and so on. Because of that, all vendors have started developing network virtual machines recently. This adds flexibility, as the software is not tied to a physical device anymore. Instead, they run special software on them to host many VM. Companies do not run physical servers to run applications anymore. VMs are now everywhere in the corporate network. But the best benefit of VMs in GNS3 is yet to come… The best benefit of having VMs in GNS3 You can add a web server and see if your firewall rules are effectively blocking the traffic, for example.

By adding VMs in GNS3, you can make this network meaningful. With GNS3, you create a virtual network without end devices. For example, you could run a web server, an FTP server, or a custom application.

With all of that, the machine will be exactly like a physical computer: you can run any software you like in it. Your physical computer will dedicate to it some RAM, some CPU, and some disk. In fact, the only limit for that is your CPU and RAM.Įach Virtual Machine not only has its own operating system, but it also has its own resources. In your physical PC, you might run multiple virtual machines simultaneously. A VM (Virtual Machine) is a virtual computer, running its own operating system. What can I do with VMs in GNS3?Īll in all, you can do a lot with VMs in GNS3. New to GNS3? Get yourself ready with this awesome GNS3 tutorial.

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In this lab, we will explain how to do that: connecting VMs in GNS3. With GNS3, you can add all the virtual servers you’d like. Adding real servers in your lab might be expensive, but not today. Without end-devices actually sourcing traffic, a network doesn’t make much sense. In fact, the purpose of any network is to move data from some devices to some others. However, a network made of just routers and switches is completely useless. Networks can be beautiful and complex with the only use of routers and switches.

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