August 2018
Intermediate to advanced
598 pages
13h 22m
English
Content preview from Data Center Virtualization Certification: VCP6.5-DCV Exam Guide
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Harden a virtual machine against DoS attacks
One or more VMs may consume too many resources on a single host, causing a possible DoS scenario. To minimize this possibility, a proper configuration of the VM resource management is needed; also, remember that each VM has implicit limits, due to resources configured in the VM settings.
Other possible DoS situations are as follows:
- Virtual disk shrinking: Shrinking a virtual disk reclaims the disk's unused space. This operation can be performed by a non-administrative user in the guest operating system, and multiple operations can cause a DoS on the virtual disk. To disable the ability to shrink virtual disks, you must use two VM advanced settings, isolation.tools.diskWiper.disable and isolation.tools.diskShrink.disable ...
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