Monday, July 22, 2024

Bios hardening on a VMWare virtual machines (VM)

Abstract: For security reasons (e.g. PCI certification) the access to removable devices like the floppy drive should be restricted. Additional to that virtual LTP or COM (serial) ports should be restricted.

Solution: Most virtual server would not need a virtual LTP or COM (serial) port, so these should be disabled in the VMWare bios together with the Floppy disk controller. Please also make sure that the VM do not have these devices added.

To Disable these go into the VM bios (via F2), then change the Legacy Disk A to disabled (1)

After that go to advanced (2) and I/OS Device Configuration (3)

In the advanced menu change the Serial Port A, B, the Parallel Port and the Floppy disk controller to disabled (4).


Cross Links:

Escaping VMware Workstation through COM1

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