Analysis of some mechanisms for virtual machines memory management
Malicious software evolution, expressed in growth of possibilities of these programs on realisation of unauthorized operations in information systems, conducts behind itself protection frames development. Every year viruses, net worms and Trojan programs all become more intellectual, so all new means are applied to struggle against them, new approaches are searched. While knowing the established information protection frames (IPF) on an attacked host, the malefactor can always develop new technology for malware concealment from the set security tools. The author sets as the purpose to design such system in which there is a possibility to provide IPF invisibility for the malefactor and/or malware within the OS in which intrusion is performed, by removing IPF outside its frameworks. For such architecture realisation it is offered to lean against virtualization technologies with hypervisor application. In a kind of opened source codes (Open Source) for this purpose achievement it is used Xen hypervisor. To investigate application possibility of the given technology, it is necessary to consider the mechanisms, allowing to isolate virtual machines from each other. One of key mechanisms is operative memory management on virtual machines.