Another Approach in Building a Secure Server OS, Based on Using Virtualization

In this paper the issue of building a secure operating system, as the most important system software, is discussed. Securing operating systems have mainly two traditional approaches: First is reviewing and making secure configurations, and the second is disabling unnecessary services. In this research, these two approaches are reviewed, then the third approach will be presented. In this new approach the important system services will run in isolated virtual machines. Separated services greatly reduce the risk of attack and increase security of operating system. One of the most important benefits of our new approach is the minimal cost of implementation by using the recently available virtualization technologies.