CN113055228B - A wireless network card-based non-aware network bridging method and device thereof - Google Patents

Abstract

The present application discloses a non-perceived network bridging method based on a wireless network card. The non-perceived network bridging method includes: installing a driver network protocol corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located; using the driver to monitor whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card end has received data to be sent to the virtual machine; The above-mentioned protocol driver based on the wireless network card in the windows kernel establishes a non-aware network bridge. When the virtual machine performs network transmission through the wireless network card of the host machine, it does not affect the normal Internet access function of the host machine, and realizes the non-aware network data connection of the virtual machine.

Description

A wireless network card-based non-aware network bridging method and device thereof

technical field

The invention relates to the technical field of wireless communication, in particular to a wireless network card-based non-perception network bridging method and a device thereof.

Background technique

A virtual machine refers to a complete computer system that is simulated by software and has complete hardware system functions and runs in a completely isolated environment. Everything that can be done on a physical computer can be done on a virtual machine. When creating a virtual machine on a computer, part of the hard disk and memory capacity of the physical machine needs to be used as the hard disk and memory capacity of the virtual machine. Each virtual machine has an independent CMOS, hard disk and operating system, and the virtual machine can be operated like a physical machine.

In a Windows-based qemu virtual machine, there are two ways to allow the virtual machine to access the Internet. One is the NAT (Network Address Translation) method. However, using NAT to achieve Internet access requires unified planning of the IP addresses of the virtual network and the LAN. This method is implemented by pure software and has incomplete functions (for example: does not support the icmp protocol and cannot ping). Therefore, most people will choose to use bridging to enable the virtual machine to achieve Internet access.

In the prior art, it is usually necessary to use the TAP virtual network card, and then use the method of windows to create a bridge for network bridging to realize the windows qemu virtual machine to access the Internet. However, in practice, this method often leads to disconnection of the network for a while or cannot be restored after the disconnection. It is very risky to apply it to products.

Contents of the invention

The present application provides a wireless network card-based non-perceptual network bridging method and its device. The present application conducts research based on the protocol driver of the network card in the windows kernel, and implements a set of non-perceptual bridging solutions to overcome the disconnection phenomenon that occurs during the creation of the bridged network in the prior art.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present application is to provide a wireless network card-based non-sensing network bridging method, the non-sensing network bridging method comprising: installing a driver network protocol corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located; using the driver to monitor whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card terminal has received data to be sent to the virtual machine; After converting the source address and network protocol according to the set conditions, the data is sent to the receiver.

In one embodiment, if the driver monitors that the virtual machine or the wireless network card has data to be sent, after converting the source address of the sender and the network protocol according to the set conditions, the step of sending the data to the receiver includes: if the driver detects that the virtual machine has data to be sent to the wireless network card, modify the source mac address of the virtual machine to the source mac address of the wireless network card through the driver; The source mac address is changed to the source mac address of the virtual machine.

In one embodiment, if the virtual machine or the wireless network card has data to be sent through the driver monitoring, after converting the source address of the sender and the network protocol installation setting conditions, the step of sending the data to the receiver includes: if the driver monitors the virtual machine or the wireless network card has data to be sent, modify the network protocol of the sender through the nwifi.sys driver file of the windows system.

In one embodiment, the step of modifying the network protocol of the sender through the nwifi.sys driver file of the windows system includes: if it is detected through the driver that the virtual machine has data to be sent to the wireless network card, converting the 802.3 network protocol into an 802.11 network protocol through the nwifi.sys driver file, and using the 802.11 network protocol to send the data to the wireless network card; , converting the 802.11 network protocol into an 802.3 network protocol through the nwifi.sys driver file, and using the 802.3 network protocol to send the data to the virtual machine.

In one embodiment, after the step of sending the data to the virtual machine using the 802.3 network protocol, the step includes: converting the source address of the wireless network card to the source address of the virtual machine through the driver, so that the virtual machine can receive the data.

In one embodiment, the step of installing the driver network protocol corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located includes: installing the driver of the network protocol corresponding to the promiscuous mode on the virtual network card of the windows system where the virtual machine is located, so as to install the network protocol on the wireless network card of the windows system.

In one embodiment, the step of installing the driver network protocol corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located includes: installing the driver of the network protocol corresponding to the promiscuous mode on the virtual network card on the same network segment of the virtual machine, so as to install the network protocol on all the wireless network cards.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide a wireless network card-based non-aware network bridging device, including: a virtual machine; a protocol driver unit, connected to the virtual machine, for installing a network protocol driver corresponding to the promiscuous mode on the wireless network card, and using the driver to monitor whether the virtual machine and the wireless network card have data to be sent; a protocol conversion unit, connected to the protocol driver unit, for converting the source address of the sender and the network protocol according to the set conditions; a wireless interface transceiver unit, connected to the protocol driver unit, for identifying Data received or sent through the interface.

In one embodiment, the protocol driver unit is further configured to install the protocol corresponding to the promiscuous mode on all systems on the same network segment as the virtual machine.

In one embodiment, the protocol conversion unit is used to convert the source mac address of the sender into the source mac address of the receiver and control the mutual conversion between the 802.3 network protocol and the 802.11 network protocol.

The beneficial effects of the present application are: install the network protocol of the driver corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located; use the driver to monitor whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card end has received data to be sent to the virtual machine; Bridging, when the virtual machine performs network transmission through the network card of the host machine, it does not affect the normal Internet access function of the host machine, and realizes the non-aware network bridging of the virtual machine.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of an embodiment of a non-aware network system based on a wireless network card in the present application;

FIG. 2 is a schematic flow diagram of an embodiment of a non-aware network bridging method based on a wireless network card in the present application;

FIG. 3 is a schematic structural diagram of an embodiment of a wireless network card-based non-aware network bridging device of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the", and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the above clearly expresses other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

It should be understood that the term "and/or" used herein is only an association relationship describing associated objects, which means that there may be three kinds of relationships, for example, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that the terms "comprising", "comprising", or any other variation thereof as used herein are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed or which are inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the statement "comprising..." does not exclude the presence of additional same elements in the process, method, article or device comprising said element.

It should be noted that a network card in the traditional sense is a piece of computer hardware designed to allow computers to communicate on a computer network. Because it has a mac address, it belongs to layer 2 of the OSI model. It enables users to connect vital physical hardware to each other via cables or wirelessly. In a computer, the computer hardware can be divided into multiple physical hardware, so that the computer simultaneously includes multiple physical hardware such as wired network cards and wireless network cards. The network card in this application includes at least a wired network card, a wireless network card, and multiple virtual network cards. In this application, a wireless network card refers to hardware used by a computer to access the Internet through a wireless connection network.

The so-called non-aware authentication means that when a user uses a device to access the Internet, only the first login requires web authentication, and there is no need to enter the user name and password again when using it again. Even if the user is offline abnormally, such as: shutdown and restart, accidental network disconnection or leaving the campus wireless network area, when the terminal connects to the wired network again or enters the wireless network coverage area, it can be automatically authenticated, so that the user is always online. This process is done automatically by the system and is "insensitive" to the user. The non-aware network bridging in this application means that when the virtual machine uses the network card of the host machine to access the Internet, it does not affect the network connection of the original network card of the host machine, thereby realizing the non-aware Internet access of the host machine.

802.3 is a technology that supports IEEE802.3 network architecture. IEEE802.3 is a collection of Institute of Electrical and Electronics Engineers (IEEE) standards developed by working groups and working groups that define media access control (mac) for the physical layer and data link layer of wired Ethernet. IEEE802.11 is a common standard for wireless local area networks today, and it is a standard for wireless network communication defined by the Institute of Electrical and Electronics Engineers (IEEE).

Network bridging (Bridging) refers to the process of forwarding network data packets according to the address of the link layer of the OSI network model. Two different physical LANs can be connected through a bridge, and it is a store-and-forward device that realizes LAN interconnection at the link layer. Specifically, the network bridge receives mac frames from one LAN, after unpacking, proofreading, and verification, reassembles them according to the format of another LAN, and sends them to its physical layer. Generally speaking, it is a connection formed by connecting several networks together through one device (maybe more than one). In this application, the network of the virtual machine and the network of the wireless network card are bridged through the virtual network card.

The present application provides a non-perceived network access system based on a wireless network card for a virtual machine, as shown in FIG. 1 , and FIG. 1 is a non-perceived network bridging method based on a wireless network card of the present application. The non-perceived network bridging method includes the following steps:

Step S11: Install the network protocol of the driver corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located.

Specifically include: installing the driver of the network protocol corresponding to the promiscuous mode on the virtual network card of the windows system, and then installing the driver of the network protocol corresponding to the promiscuous mode on the wireless network card through the data connection relationship between the virtual network card and the wireless network card. In this step, the installation of the protocol driver can be automatically installed by the driver layer of the windows system. Before this step, it also includes: establishing a virtualization solution at the application layer of the windows system to form a virtual machine independent of the windows system.

In this step, it also includes installing the driver of the network protocol corresponding to the promiscuous mode into the system of the same network segment, so that the virtual machine or application program of the same network segment establishes a connection with the wireless network card through the protocol driver, and realizes the functions of receiving data packets and sending data packets.

In this embodiment, the network protocol of the driver corresponding to the promiscuous mode is installed on the wireless network card to establish a protocol connection between the virtual machine and the wireless network card, so as to realize the network connection between the virtual machine and the Internet.

Specifically, when the network protocol of the driver corresponding to the promiscuous mode is installed, the driver of the network protocol is set to the promiscuous mode, so as to receive all data passing through the interface of the wireless network card, and send the received data to the virtual machine. Among them, it should be noted that the promiscuous mode means that a machine can receive all data streams passing through it. Normally, the network card only accepts the data whose destination address points to itself from the network port; when the network card works in the promiscuous mode, the network card captures all the data from the interface and hands it to the corresponding driver.

After this step, the wireless network card sends the information that the network protocol corresponding to the promiscuous mode is successfully installed to the virtual machine through the driver.

Step S12: Use the driver to monitor whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card has received data to be sent to the virtual machine.

In this step, the virtual machine uses the driver to monitor whether there is data flow on the wireless network card, and the status of the data flow, including monitoring the size of the data packet and the information of the data frame. The specific implementation is to monitor whether the virtual machine has data to be sent to the wireless network card or whether the wireless network card end receives data to be sent to the virtual machine. If the driver detects that there is data flow, step S13 is executed.

Step S13: If the virtual machine or the wireless network card has data to be sent through monitoring through the driver, the data is sent to the receiver after the source address of the sender and the network protocol are converted according to the set conditions.

In this embodiment, the sender and the receiver are a virtual machine and a wireless network card. When the virtual machine sends a data packet to the wireless network card, the sender is the virtual machine and the receiver is the wireless network card; when the wireless network card sends the data packet to the virtual machine, the sender is the wireless network card and the receiver is the virtual machine.

Step S13 specifically includes: if it is detected by the driver that the virtual machine has data to be sent to the wireless network card, then the source mac address of the virtual machine is modified by the driver to the source mac address of the external wireless network card; if the wireless network card is detected by the driver.

This step also includes: if a virtual machine or a wireless network card has data to be sent through monitoring through the driver, modify the network protocol of the sender through the nwifi.sys driver file of the windows system. Specifically, if the driver detects that the virtual machine has data to be sent to the wireless network card, convert the 802.3 network protocol to the 802.11 network protocol through the nwifi.sys driver file, and use the 802.11 network protocol to send the data to the wireless network card; .

In order to specifically illustrate the implementation process of the above-mentioned embodiment, please refer to FIG. 2 for details. FIG. 2 is a schematic diagram of the signal flow of an embodiment of the wireless network card-based non-aware network system of the present application;

The virtual machine 100 sends the network protocol to the wireless network card 400 through the driver unit 200 , and installs the network protocol on the wireless network card 400 through the driver unit 200 . In this embodiment, the network protocol is the network protocol corresponding to the promiscuous mode, and the specific implementation method is to set the driver of the network protocol to the promiscuous mode during the protocol installation process, so that the wireless network card can receive all the data flowing through the interface. After the wireless network card 400 is successfully installed, it also includes sending information about the successful installation to the virtual machine 100 through the drive unit 300 . The virtual machine 100 monitors the data received or sent by the wireless network card 400 through the drive unit 200 .

Specifically, if the drive unit 200 detects that the virtual machine has data to be sent to the wireless network card, the sending packet of the virtual machine 100 is sent to the drive unit 200, the source mac address of the virtual machine is modified to the source mac address of the wireless network card by the drive unit 200, and then the source mac address of the data packet after the change is sent to the protocol conversion unit 300, and the protocol conversion unit 300 converts the Internet access protocol standard of the data packet from 802.3 to 802.11, and converts the source mac address and the Internet access protocol standard through conversion The data packets are sent to the wireless network card 400, and communicated with the external network 500 through the wireless network card 400, wherein the function of the protocol conversion unit 300 is completed by the nwifi.sys driver file in the windows system. In this embodiment, the external network 500 refers to the Internet or a data network independent of the host machine, and the wireless network card 400 receives network data from the external network 500 or sends network data to the external network 500 . If listen to the wireless network card end by driving and receive the data to be sent to the virtual machine, wherein, the data includes the external network card 500 to send to the wireless network card 400 send and receive packets; Convert the source mac address of the virtual network card, and send the converted data to the virtual machine 100 so that the virtual machine 100 can receive the data sent by the wireless network card 400, avoid packet loss, and realize the non-perceptual bridging of data transmission and reception between the virtual machine 100 and the wireless network card 400.

It should be noted that, in this embodiment, the driver of the driver unit 200 and the protocol conversion operation of the protocol conversion unit 300 are automatically completed by software, and the driver of the driver unit 200 and the protocol conversion operation of the protocol conversion unit 300 can be completed on the virtual network card.

The system in this embodiment is a windows system. Before realizing the wireless network card non-aware bridging in the windows system, it also includes establishing a virtualization scheme in the windows system. The virtualization scheme can be an application software interface, etc. In this embodiment, the virtualization scheme is a virtual machine 100, and the windows system is a host machine.

In another embodiment, the network protocol of the driver corresponding to the promiscuous mode is installed on the virtual network card on the same network segment of the virtual machine, so as to install the network protocol on all wireless network cards. Specifically, virtual network cards on the same network segment can exchange information, and during data transmission, data transmission can be performed on other devices on the same network segment by modifying the mac address and network protocol of the data.

It should be noted that the network protocol in this application is the network protocol corresponding to the promiscuous mode. Driven by the network protocol, all the data flowing through the network card installed with the network protocol will be obtained by the network card. In addition, the virtual machine 100 is a "computer" independent of the host machine, and is a virtual computer that can realize all functions that can be realized by a physical computer. The virtual machine 100 can also be an application software.

The network bridging method in this application includes the application layer, driver layer, protocol layer and hardware layer of the network, and the function of the wireless network card is implemented at the hardware layer, specifically including receiving/sending data packets of the external network, and receiving/sending data requests from the virtual machine and the host machine. The virtual machine is implemented at the application layer, and the virtual machine itself can be an application software. The driver layer and the protocol layer respectively correspond to the driver unit and the protocol conversion unit, and are used to drive the installation of the network protocol and the conversion of the network protocol. It should be noted that, in this embodiment, the driver unit and the protocol conversion unit can be implemented at the application layer, and there is no specific division. They are only subdivided into the driver layer and the protocol layer for the purpose of explaining the installation process of the virtual protocol in this embodiment, which is not limited here.

This embodiment is installed on the Internet card 400 through driving the virtual machine 100, and the network data of the wireless network card 400 through the driver is used to realize the information interaction of the virtual machine 100 and the wireless network card 400 through the driver, so as to realize the Internet access function of the virtual machine. In this example, the driver installation of the mixed mode will not change the original Internet protocol of the host network. And the protocol driver, so as to realize the non -perception of the virtual machine and the host, which is equivalent to adding a new network protocol to the wireless network card. Once the protocol is successfully installed, the virtual machine 100 monitors the network data on the wireless network card 400 through the driver, and obtains the data circulating on the wireless network card 400, specifically including: if the wireless network card 400 is detected to have data to be sent, the information of the data packet is converted by the driver to be transmitted to the virtual machine 100; Data transmission is performed with the external network 500 through the wireless network card 400 .

The beneficial effects of this embodiment are: install the network protocol corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located; use the driver to monitor whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card end has received data to be sent to the virtual machine; Data to the wireless network card, without packet loss, realizes the barrier-free network connection between the virtual machine and the wireless network card. On the other hand, by installing the network protocol corresponding to the promiscuous mode on the wireless network card of the host machine, it will not affect the original Internet access function of the host machine, thereby realizing the non-perceived Internet access.

The present application also provides a wireless network card-based non-aware network bridging device, please refer to FIG. 3 for details. FIG. 3 is a schematic structural diagram of an embodiment of the wireless network card-based non-aware network bridging device of the present application. As shown in Figure 3, this wireless network card-based non-perceived network bridging device 30 includes: a virtual machine 31; a protocol driver unit 32, connected to the virtual machine, for installing the network protocol corresponding to the promiscuous mode on the wireless network card, and utilizing the driver to monitor whether the virtual machine and the wireless network card have data to be sent; the protocol conversion unit 33 is connected with the protocol driver unit, and is used to convert the source address of the sender and the network protocol according to the set conditions; or sent data. Specifically, in this embodiment, the protocol driver unit 32 utilizes the drivers corresponding to the promiscuous mode to monitor whether the virtual and wireless network cards have data to be sent. The specific process includes: monitoring whether the virtual machine has data to be sent to the wireless network card, or whether the wireless network card end receives data to be sent to the virtual machine; The network protocol uses the 802.11 network protocol to send the data of the virtual machine to the wireless network card; if the wireless network card terminal receives data to be sent to the virtual machine, the source mac address of the wireless network card is modified to the source mac address of the virtual machine, and the 802.11 network protocol is converted to the 802.3 network protocol by the protocol conversion unit 33, and the network protocol of the wireless network card is sent to the virtual machine by using the 802.3 network protocol. The protocol conversion unit 33 is used to control the mutual conversion between the 802.3 network protocol and the 802.11 network protocol. When the virtual machine sends data to the wireless network card, the control changes the network sending standard of the data packet to 802.11. When the wireless network card sends data to the virtual machine, the control changes the network sending standard of the data packet to 802.3.

In another embodiment, the protocol driver unit 32 is configured to install the protocol corresponding to the promiscuous mode on all systems on the same network segment as the virtual machine. Through the above method, the system on the same network segment as the virtual machine can also use the wireless network card for data transmission. Specifically, the same network segment means that the IP addresses for accessing the Internet are in the same network segment.

In this embodiment, the wireless interface receiving/sending unit 34 is also connected to the wireless network card, and is used to receive or send data or data packets circulating through the wireless network card. It specifically includes: receiving the data request sent by the virtual machine and sending the data request to the Internet, receiving the data sent by the Internet and sending the data to the virtual machine. Wherein, the wireless interface transceiving unit also includes storing the received data on the physical network card to form an online record, which is not limited here.

It should be noted that the virtual machine 31, the protocol driver unit 32, the protocol conversion unit 33, and the wireless interface receiving/sending unit 34 in this embodiment are virtual modules, which are implemented by the software application layer of the computer, and the above-mentioned connections are signal couplings. The virtual machine 31, the protocol driver unit 32, the protocol conversion unit 33, and the wireless interface receiving/sending unit 34 in this embodiment may be the same as or different from the virtual machine 100, the driver unit 200, and the protocol conversion unit 300 in the second embodiment, and are not limited here.

The beneficial effects of this embodiment are: the driver of the network protocol corresponding to the promiscuous mode is installed on the wireless network card through the protocol driver unit 32, and whether the virtual machine has data to be sent to the wireless network card is monitored, or whether the wireless network card end receives data to be sent to the virtual machine; 2.11 network protocol sends the data of the virtual machine to the wireless network card; if the wireless network card end receives data to be sent to the virtual machine, the source mac address of the wireless network card is modified to the source mac address of the virtual machine, and the 802.11 network protocol is converted to the 802.3 network protocol by the protocol conversion unit 33, and the network protocol of the wireless network card is sent to the virtual machine by using the 802.3 network protocol, thereby realizing the non-perception bridge between the virtual machine and the wireless network card, so that the virtual machine can access the Internet.

The above is only the implementation of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the application, or directly or indirectly used in other related technical fields, is also included in the scope of patent protection of the application.

Claims (7)

1. The non-perception network bridging method based on the wireless network card is characterized by comprising the following steps of:

installing a driving network protocol corresponding to the hybrid mode on a wireless network card of a windows system where the virtual machine is located;

monitoring whether the virtual machine has data to be sent to the wireless network card or not by utilizing the drive, or whether the wireless network card terminal receives the data to be sent to the virtual machine or not;

if the virtual machine or the wireless network card is monitored to have data to be sent through the driver, the source address of a sender and a network protocol of the sender are converted according to a set condition through a nwifi.sys driver file of the windows system, and then the data are sent to a receiver; the method specifically comprises the following steps: if the driver monitors that the virtual machine has data to be sent to the wireless network card, converting an 802.3 network protocol into an 802.11 network protocol through the nwifi.sys driver file, and sending the data to the wireless network card by utilizing the 802.11 network protocol; and if the wireless network card is monitored through the driver, receiving data to be sent to the virtual machine, converting an 802.11 network protocol into an 802.3 network protocol through the nwifi.sys driver file, and sending the data to the virtual machine by utilizing the 802.3 network protocol.

2. The method of claim 1, wherein if the driver monitors that the virtual machine or the wireless network card has data to be transmitted, the step of transmitting the data to the receiver after converting the source address and the network protocol of the sender according to the set conditions includes:

if the driver monitors that the virtual machine has data to be sent to the wireless network card, the driver modifies the source mac address of the virtual machine into the source mac address of the wireless network card;

and if the driver monitors that the wireless network card receives the data to be sent to the virtual machine, the driver modifies the source mac address of the wireless network card into the source mac address of the virtual machine.

3. The method of imperceptible network bridging according to claim 1, wherein the step of sending the data to the virtual machine using the 802.3 network protocol is followed by:

and converting the source address of the wireless network card into the source address of the virtual machine through the driver so that the virtual machine receives the data.

4. The method for bridging a non-aware network according to claim 1, wherein the step of installing the network protocol of the driver corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located comprises:

and installing a driver of a network protocol corresponding to the hybrid mode on a virtual network card of the windows system where the virtual machine is located, so as to install the network protocol on a wireless network card of the windows system.

5. The method for bridging a non-aware network according to claim 1, wherein the step of installing the network protocol of the driver corresponding to the promiscuous mode on the wireless network card of the windows system where the virtual machine is located comprises:

and installing the network protocol of the drive corresponding to the promiscuous mode on the virtual network card of the same network segment of the virtual machine so as to install the network protocol on all the wireless network cards.

6. A wireless network card-based non-aware network bridging device, the non-aware network bridging device comprising:

a virtual machine;

the protocol driving unit is connected with the virtual machine and is used for installing a driving network protocol corresponding to the hybrid mode on the wireless network card and monitoring whether the virtual machine and the wireless network card have data to be transmitted or not by utilizing the driving;

the protocol conversion unit is connected with the protocol driving unit and is used for converting the source address of the sender and the network protocol according to set conditions; the method is particularly used for converting the source mac address of a sender into the source mac address of a receiver and controlling the mutual conversion of an 802.3 network protocol and an 802.11 network protocol;

and the wireless interface receiving/transmitting unit is used for identifying the data received or transmitted through the interface.

7. The wireless network card based non-aware network bridging device of claim 6, wherein the protocol driver unit is further configured to install the protocol corresponding to the promiscuous mode on all systems in the same network segment as the virtual machine.