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Virtual machine system and method for sharing Ethernet point to point protocol link

A technology of virtual machine and virtual network card, which is applied in the field of external network access of GOS in the virtual machine system, which can solve the problems of potential safety hazards, network data message eavesdropping, etc., and achieve the effect of ensuring security

Active Publication Date: 2009-04-01
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since all network traffic of other GOS needs to pass through the GOS that establishes the PPPoE link, its network data packets may be eavesdropped by the GOS that establishes the PPPoE link, posing a serious security risk

Method used

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  • Virtual machine system and method for sharing Ethernet point to point protocol link
  • Virtual machine system and method for sharing Ethernet point to point protocol link

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Embodiment Construction

[0041] In the virtual machine system of the present invention and the method for sharing the Ethernet point-to-point protocol link thereof, the user name and password of the GOS that first initiates the PPPoE connection request are intercepted by the SOS, and the PPPoE connection is established using the user name and password, and after the PPPoE connection is established , the connection is shared by all GOS.

[0042] like figure 1 As shown, the virtual machine system of the present invention includes SOS, a plurality of GOS (GOS1, GOS2, ..., GOSn), a virtual machine monitor VMM (Virtual Machine Monitor) and a real physical network card, and at the same time, communication module, the SOS is provided with a pseudo network card and a virtual router, and the GOS is provided with a connection establishment request module and a virtual network card, wherein:

[0043] The virtual network card is connected to the first interface on the virtual router through the communication mod...

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Abstract

The invention provides a virtual machine system and a method thereof for sharing the point-to-point protocol linkage of Ethernet. The system comprises an SOS, a virtual machine monitor, a GOS and a real physics network card. A virtual machine router has the functions of routing and network address conversion, wherein, the SOS is used for establishing PPPoE connection with a real remote PPPoE server by using user names and passwords in a PPPoE connection request which is sent by a intercepted first GOS, and a first PPP interface is established; the first GOS is used for establishing the PPPoE connection with the SOS, and accessing external networks by a PPP interface router; a second GOS except for the first GOS is used for automatically setting the IP address of the virtual network card and the IP address and the network segment of the pseudo network card of the SOS, after the default gateway is the IP address of the pseudo network card, networks are accessed by the first PPP interface router. The invention realizes the simple and safe connection of sharing PPPoE to access the external networks.

Description

technical field [0001] The invention relates to the external network access of GOS (Guest Operation System, guest operating system) in a virtual machine system, in particular to a virtual machine system and a method for sharing a PPPoE (Point to Point Protocol over Ethernet, Ethernet point-to-point protocol) link with the virtual machine system. Background technique [0002] In an existing virtual machine system, multiple Guest OSs can use virtual network cards, or front-end and back-end network cards to share real physical Ethernet cards for external network access. [0003] However, in the above solution, since there are multiple GOSs, after one of the GOSs establishes a PPPoE link, other GOSs cannot automatically share the PPPoE link, and can no longer perform PPPoE dialing to establish other PPPoE links. [0004] For the problems referred to above, in the existing method, one of the GOSs carries out PPPoE dial-up to get online, after setting up the PPPoE link, other GOS ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/12
Inventor 刘永锋
Owner LENOVO (BEIJING) CO LTD
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