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Anti-virus method and anti-virus system for virtual machine

An anti-virus and virtual machine technology, applied in computer security devices, instruments, electronic digital data processing and other directions, can solve the problems of consuming large computer resources, reducing computer processing speed, time-consuming and other problems, improving scanning efficiency, ensuring operating performance, The effect of reducing the amount of data

Active Publication Date: 2015-12-02
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the above-mentioned existing anti-virus system relies on the operation of the client operating system, so its effectiveness cannot be well guaranteed. For example, an intruder may forcibly shut down the anti-virus system, thereby bypassing the virus protection. Invasion system
[0004] In addition, the existing anti-virus systems often use system-wide file scanning to check for viruses, which is not only time-consuming, but also consumes a lot of computer resources. reduce

Method used

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  • Anti-virus method and anti-virus system for virtual machine
  • Anti-virus method and anti-virus system for virtual machine
  • Anti-virus method and anti-virus system for virtual machine

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] image 3 A schematic diagram of an antivirus system according to an embodiment of the present invention is shown. Such as image 3 As shown, according to an embodiment of the present invention, the antivirus system for a virtual machine is implemented based on a virtual machine monitor (VirtualMachineMonitor, VMM) placed on the host computer, and the system includes a virtual antivirus engine (VirtAV-engine) , virus memory signature database, virtual antivirus expansion module (VirtAV-stub), and virtual antivirus agent (VirtAV-agent).

[0025] VirtAV-engine is a scanning engine based on virus memory signatures. The engine is implemented with a multi-threaded architecture and a reentrant design method. It runs in the context of the virtual central processing unit (virtual CPU, VCPU) of the virtual machine and works in the user mode of ...

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Abstract

The invention provides an anti-virus method for virtual machine, comprising the following steps of: 1, intercepting a first access to the update content of a memory page, wherein the first access happens on the memory page allocated to the virtual machine on a host; 2, scanning the page content of the memory page; 3, according to the scanning result, clearing the page content of the memory page, or restoring the access to the memory page. The invention further provides an anti-virus system for virtual machine. The technical scheme of the invention can realize that an anti-virus system is not dependent on a client operating system; before execution of a virus program, the virus is recognized and prevented; data volume of virus scanning is reduced, and scanning efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of computer virtualization, in particular, the invention relates to an antivirus method and system for a virtual machine. Background technique [0002] There are mainly two types of existing antivirus technologies for virtual machine environments. one is attached figure 1 The structure shown is the same as the anti-virus method in the physical machine environment, that is, a complete anti-virus software is installed in the guest operating system of the virtual machine, and the anti-virus software runs on the guest operating system to scan and process files and other information for viruses. The other is as attached figure 2 An antivirus system with light agent architecture shown, for example, by The vShieldEndpoint architecture proposed by the company specifically includes: a security-enhanced security virtual device, a thin agent (EpsecThinAgent) running in the protected virtual machine, and virtualiza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/56G06F21/53
CPCG06F21/53G06F21/566
Inventor 唐宏伟赵晓芳
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI