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in this lecture I will explain about how
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to download and install VirtualBox. So
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the first step in creating our lab
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environment is by installing a
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virtualization software  such as any
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VMware flavor or Oracle VirtualBox which
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I have chosen because it's free and easy
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to use. VirtualBox will be used to create
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virtual machines or VMs in the lab
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environment including the security onion
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VM, the Kali Linux VM, and the Metasploitable
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VM. So first we will download
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VirtualBox by going to this link
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shown here, which you can find in
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addition to all other links for
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downloading the required software for
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this course at the first lecture. Now I
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will start downloading VirtualBox for
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Windows hosts and click save file. We see
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that the  downloading is
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starting now, so I will stop recording
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and continue after the download is
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complete. And we see now that the
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download is completed. So now I will
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launch the setup for VirtualBox and
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click on next, and then also on next and
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I will leave this option selected, and
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click on next and it gives us a warning
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about network interfaces, that it will
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reset our network connections, and there
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is no problem with that.
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So I will click on yes, and then install,
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and we see that the installation process
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is now in progress and if it is the first
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time you are installing VirtualBox you
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might see messages about trusting
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software from Oracle, and you should
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click on yes for these messages.
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so it is progressing now in the
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installation process.
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And we see that the installation is now
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completed.
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So I will click on finish to start
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VirtualBox. We see now that we have
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installed VirtualBox successfully, and in
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the next lecture we will start
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installing and configuring the Security
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Onion VM.