ESP CCN-CERT BP/15 best practices in virtualization issued, also in English, French.
The guide, dated Aug. 2021, was published in Spanish, English, French on Sep. 13.
Virtualization is term used for multiple technologies; in computing, it is understood as recreation of physical (hardware) or logical (software) resource by means of hypervisor that allows the execution of more than one environment at the same time.
In virtual machine environment, hypervisor allows simultaneous use of hardware for over 1 operating system, controls physical layer (RAM, CPU, disk) that can be accessed only by it and presents virtual machines with a compatible hardware interface.
Virtualization rise came with cloud use where resource sharing system indispensable.
Although there were already multiple systems from many manufacturers, the development and progress of these systems has recently increased exponentially.
Currently systems like Citrix's XenServer, Dell's VMware ESXi, Oracle's Oracle VM Server, Oracle's VirtualBox and Microsoft's Hyper-V, among others, are available.
Then guide delves into details of Microsoft approach, different types of virtualization.
When categorization is based on virtualized element, main virtualization possibilities are hardware, applications or user sessions.
Focus of guide is on virtualization of hardware both with soft and hard partitioning.
In turn covers security challenges in virtualization, types of virtualized networks, hyper-V best practices (with tables, graphics and other educational elements), etc.
Towards the end it contains a catalog of 10 recommendations for firms to follow.