The security management of virtual servers is similar to that of physical servers, so the security principles and practices of physical servers can also be applied to virtual servers. However, multiple considerations need to be made according to the characteristics of the virtual server.
The use of virtual servers can accelerate the speed of enterprise software deployment, but it also requires the IT department to implement the necessary control and management, and shorten the time frame accordingly. A careful review of the actual configuration of the system is essential for the deployment of virtual servers. Only in this way can we ensure that the deployment of software meets the control requirements of the enterprise.
Before reviewing and proceeding to improve the security of the virtual environment, it may be necessary to obtain guidance on protecting the security of the virtual server environment from the virtual server manufacturer and related organizations, and then strengthen the protection strategy according to its environment.
Besides, various virtual security tools on the market can also help, but analysts suggest that before buying a new product specifically designed for virtual servers, you should first consider tapping the potential of the products in use. Here are some suggestions that can assist IT, managers, in better auditing the security of virtual server environments:
1. Conduct a comprehensive risk assessment and grasp the distribution and integration of resources
The analyst recommends making full use of the original knowledge of risk management and configuration, combining the configuration of the virtual machine itself, and evaluating and reviewing the virtual environment like other environments. The review process of the virtual environment is not essentially different.
2. Verify the process of creating, deploying, managing, and changing virtual machines
Nowadays, installation and debugging of hardware, operating system, etc., rack space layout, and testing are no longer the most important tasks. Virtual machines don't just belong to a department. From a security perspective, two-way communication with system administrators and network teams to understand the changes in the virtual environment is of great help in ensuring the security of virtual servers.
3. Configure the virtual layer safely and keep the patch updated
You can refer to the security guidance of manufacturers and related organizations to develop your benchmarks, and then use this as a standard for auditing to ensure the security of the virtual layer. The tools provided by the virtualization vendors can effectively assist in the configuration work.
4. Ensure the security of the virtual switch in the virtual server
It should be assessed whether additional controls are needed, such as virtual firewalls or virtual intrusion protection systems. The virtual switching devices in the physical server can be used to closely monitor how users use virtual machines, such as the configuration of those switches, traffic conditions, and the accessibility between the virtual machines themselves, and between the virtual machines and external devices.
5. Strictly control access to the service console and management tools
Strictly control access to the service console and management tools, and use management tools to support an independent network. This ensures that the virtual machine will not interfere with the management console's control of other servers. Most of the security problems in a virtual environment come from improper management or some familiar errors. This is because the tools used in the physical environment are much more complex than in the virtual environment.
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