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Setup Lab Environment using CentOS Linux and Oracle VirtualBox

Last week I started Red Hat Server Hardening (RH413) online training from Network Nuts so thought of setting up my lab environment to exercise the quiz at the end of each unit. I decided to use the open source CentOS Linux and Oracle VirtualBox on my Dell Latitude Windows 7 laptop so it won't hurt my pocket with extra cost. As this is going to be a lab environment and we experiment and break things up so it is a good practice to have a baseline image of the operating system which we can use to create multiple identical virtual machines within few minutes when needed using Clone feature. VirtualBox also has another great feature and that is point in time snapshot. Let's check out the step by step process to build the lab environment,