CN114285764A - Packet capturing method and device and storage medium - Google Patents
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Abstract
The embodiment of the application provides a packet capturing method, a packet capturing device and a storage medium, wherein the method comprises the following steps: responding to a packet capturing request sent by a user, and acquiring packet capturing parameters according to the packet capturing request; generating a grabbing instruction based on the packet grabbing parameters; and performing data grabbing operation based on the grabbing instruction, and acquiring and storing corresponding data packets for downloading by a user. In the embodiment of the application, the corresponding grabbing instruction can be generated according to the packet grabbing parameters when the user puts forward the packet grabbing request, the required data packet can be effectively grabbed according to the grabbing instruction, the user is not required to limit the filtering conditions according to the filtering rules, the packet grabbing efficiency is improved, and the user experience is good.
Description
Technical Field
The present application relates to the field of network communication technologies, and in particular, to a packet capturing method and apparatus, and a storage medium.
Background
Currently, when a packet capturing tool such as Fiddler is used to perform packet capturing operation, some filtering statements of a network layer need to be written according to filtering rules before packet capturing, so as to obtain a specified data packet according to the filtering statements. And writing the filtering statement requires learning the filtering rule, which causes inconvenience to the user in the process of packet capturing.
Therefore, how to effectively perform network packet capturing is an urgent technical problem to be solved without knowing various filtering rules.
Disclosure of Invention
In one aspect, an embodiment of the present application provides a packet capture method, including:
responding to a packet capturing request sent by a user, and acquiring packet capturing parameters according to the packet capturing request;
generating a grabbing instruction based on the packet grabbing parameters;
and performing data grabbing operation based on the grabbing instruction, and acquiring and storing corresponding data packets for downloading by a user.
In some embodiments, the packet capture parameters include at least one of:
network device, source address, source port, destination address, destination port, protocol type.
In some embodiments, the generating the grab instruction based on the grab parameter includes:
analyzing the packet capturing parameters to acquire first parameter information;
and generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
In some embodiments, the method further comprises:
and traversing all the network equipment to generate a corresponding network equipment list so that the user can select the network equipment list when proposing the packet capturing request.
In some embodiments, the method further comprises:
and analyzing the data packet, and acquiring the flow data information of the data packet so as to visually display the flow data information.
In some embodiments, the traffic data information comprises at least one of: source address, destination address, source port, destination port, application protocol type, number of packets, number of bytes.
On the other hand, based on the same inventive concept, an embodiment of the present application provides a packet capturing device, including:
the acquisition module is configured to respond to a packet capturing request sent by a user and acquire packet capturing parameters according to the packet capturing request;
the generating module is configured to generate a grabbing instruction based on the packet grabbing parameters;
and the grabbing module is configured to perform data grabbing operation based on the grabbing instruction, acquire and store a corresponding data packet, so that the data packet can be downloaded by a user.
In some embodiments, the generating module is specifically configured to:
analyzing the packet capturing parameters to acquire first parameter information;
and generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
In some embodiments, the bale plucking apparatus further comprises:
and the analysis module is configured to analyze the data packet, acquire the traffic data information of the data packet and visually display the traffic data information.
The embodiments of the present application further provide a storage medium, where one or more programs are stored, and when the one or more programs are executed by a processor, the steps of the method provided in any embodiment of the present application are implemented.
In the embodiment of the application, the corresponding grabbing instruction can be generated according to the packet grabbing parameters when the user puts forward the packet grabbing request, the required data packet can be effectively grabbed according to the grabbing instruction, the user is not required to limit the filtering conditions according to the filtering rules, the packet grabbing efficiency is improved, and the user experience is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a flowchart of a packet capture method according to an embodiment of the present application;
FIG. 2 is a diagram illustrating an effect of a packet capture method according to an embodiment of the present application;
FIG. 3 is a diagram of data information in a data packet according to an embodiment of the present application;
FIG. 4 is a diagram illustrating an effect of a packet capture method according to another embodiment of the present application;
FIG. 5 is a diagram illustrating an effect of a packet capturing method according to another embodiment of the present application;
fig. 6 is a block diagram of a packet capture device according to an embodiment of the present application;
fig. 7 is a block diagram of a packet capture device according to another embodiment of the present application.
Detailed Description
Various aspects and features of the present application are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present application has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.
The packet capturing is data packet capturing, and the data packet transmitted and received on the network is captured to analyze the captured data packet, so as to perform operations such as security detection. When a user uses a packet capturing tool to capture packets, if the user is not familiar with the filtering rules, the user cannot define the required filtering conditions according to the filtering rules, and cannot capture the data to be detected, so that the user cannot obtain the required data packets, and the packet capturing efficiency is greatly reduced. In the embodiment of the application, the corresponding grabbing instruction can be generated according to the packet grabbing parameters when the user puts forward the packet grabbing request, the required data packet can be effectively grabbed according to the grabbing instruction, the user is not required to limit the filtering conditions according to the filtering rules, the packet grabbing efficiency is improved, and the user experience is good.
The bale catching method and the bale catching device in the embodiment of the application can be integrated in an intranet system applied to a company or an enterprise, so that the operation can be carried out without depending on an external network and other external resources in the specific implementation process.
Fig. 1 is a flowchart of a packet capture method according to an embodiment of the present application. As shown in fig. 1, the packet capture method according to the embodiment of the present application includes steps S100 to S300:
step S100, responding to a packet capturing request sent by a user, and acquiring packet capturing parameters according to the packet capturing request.
The method comprises the steps of analyzing a packet capturing request when the packet capturing request sent by a user is received, and acquiring packet capturing parameters in the packet capturing request. In this step, the packet capturing parameters may be, for example, network equipment, a source address, and the like, and are selected and filled according to actual needs of the user, so that when the user submits a packet capturing request, the packet capturing apparatus of the present application may encapsulate the packet capturing parameters in the packet capturing request. Therefore, when the packet capturing device receives a packet capturing request of a user, the packet capturing device can acquire the packet capturing parameters aimed by the user by analyzing the parameters in the packet capturing request.
Illustratively, the user can utilize various terminal devices, such as a computer, etc., to access the browser page on line, and fill in the packet capturing parameters according to actual needs according to the guidance on the page. For example, when a user needs to capture data for one of the network cards in the network device, the name of the network card is filled in the browser page according to the guiding position, and then when a packet capture request is submitted, the name of the network card is packaged by the packet capture device of the present application. Therefore, after receiving a packet capturing request submitted by a user, the packet capturing device can acquire the name of the network card submitted by the user according to the packet capturing request so as to capture data within a default time length for the network card. When a user fills in packet capturing parameters, after filling in the name of the network card, the capturing duration may be defined, or a source address or a source port may be defined, etc., that is, each packet capturing parameter is selected and filled according to the actual need for capturing, and the packet capturing parameters are not limited in this application. Therefore, according to the limiting conditions corresponding to different packet capturing parameters set by the user, the packet capturing device can correspondingly more accurately screen the data packets, and the requirements of the user under different conditions are met.
In some embodiments, the packet capture parameters include at least one of:
network device, source address, source port, destination address, destination port, protocol type.
In this embodiment, the user may define the capture condition by using each packet capture parameter, so as to capture the required data packet. For example, when the user fills in the packet capturing parameters, the user may determine the network device by filling in the name of the network card, and may further define the capturing time length to capture the data packet for the network card within the corresponding time length. Or the network card can also define a source address or a source port to capture the data packet which is on the network card and accords with the source address or the source port. Or limiting the destination address or the destination port to capture the data packet which is on the network card and accords with the destination address or the destination port. Or the protocol type is limited so as to capture the data packet which is in line with the dependent protocol type on the network card; and so on. The present application does not limit the packet capture parameters selected and filled by the user. The user can select and fill in each packet capturing parameter according to the actual capturing requirement, so that the packet capturing device can correspondingly more accurately screen the data packet according to different limiting conditions set by the user, and the requirements of the user under different conditions are met.
In some embodiments, the method further comprises:
and traversing all the network equipment to generate a corresponding network equipment list so that the user can select the network equipment list when proposing the packet capturing request.
The embodiment aims to provide a network equipment list for a user so that the user can conveniently select the network equipment list according to actual needs. The terminal device used by the user may be connected to one or more network devices, for example, to one or more network cards. In this embodiment, all network devices on the terminal device used by the user are traversed, and after the information of all network devices is obtained, the information of the network devices is encapsulated, so that the network devices can be listed by names of the network devices, and a network device list is generated. Therefore, when a user needs to fill in the name of the network equipment in the process of submitting a packet capturing request by a browser page, the generated network equipment list is displayed on the browser page for the user, so that the user does not need to inquire the network equipment on the terminal equipment, and the required network equipment can be conveniently selected according to the network equipment list so as to capture all data packets of the network equipment.
And step S200, generating a grabbing instruction based on the grabbing packet parameters.
The step aims to capture the data packet required by the user according to the capture instruction corresponding to the packet capture parameter submitted by the user. In this step, a technician may compile some filtering rules according to experience, so as to combine and encapsulate the packet capturing parameters in the packet capturing request submitted by the user according to the filtering rules, thereby generating a corresponding capturing instruction to capture corresponding data. The filtering rules may include operation rules such as "and" or "and the like, so as to implement combination and encapsulation of the packet capturing parameters, and of course, some other operation rules and the like may also be included. In this embodiment, the filtering rule may be used to capture corresponding data, and an actual implementation manner of the filtering rule is not limited.
In some embodiments, the above step S200 can be implemented as the following steps S210-S220:
s210, analyzing the packet capturing parameters to acquire first parameter information;
s220, generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
The embodiment aims to analyze the information that the filter can identify according to the packet capturing parameters, so as to generate a corresponding packet capturing statement to filter or intercept the data packet. In this application, a filter may be configured in the capturing module 30 of the packet capturing device, and the capturing instruction is executed through the filter, so that corresponding data may be filtered or intercepted, so as to capture the corresponding data. In this embodiment, in order to facilitate the recognition of the filter to filter or intercept corresponding data, after the packet capture parameters of the user are obtained, the packet capture parameters are analyzed to obtain first parameter information that can be recognized by the filter from the packet capture parameters. For example, the first parameter information may be some field information corresponding to the packet capture parameters, and the filter may be identified according to the field information. After the first parameter information is obtained, the first parameter information may be assembled according to a preset filtering rule, for example, the first parameter information is assembled and encapsulated through an operation rule of "and" or the like, and a corresponding packet capturing statement is generated so that the filter performs identification and performs corresponding filtering or intercepting operation.
For example, when the initial parameter is source port information, the first parameter information may be some field information corresponding to the source port, such as port 1234, and the port information 1234 is assembled into a statement according to the filtering rule, so as to generate a packet capture statement for capturing data.
And step S300, performing data capturing operation based on the capturing instruction, and acquiring and storing a corresponding data packet for downloading by a user.
The step aims to capture corresponding data by executing the capture instruction, obtain a corresponding data packet and store the data packet so as to download the data packet when required by a user. In this embodiment, when the capture module 30 receives the capture instruction, the filter rule in the capture instruction is read by the filter, and corresponding filtering or intercepting operation is performed according to the filter rule, so as to implement capture operation of the target data packet, thereby obtaining all the required data packets.
Illustratively, when a user submits a packet capture request for a network card, the packet capture parameter in the packet capture request is the name or ID information of the corresponding network card. Therefore, when data is captured, the filter filters or intercepts data received or sent by the corresponding network card according to the filtering rule in the capturing instruction, so that the data packet corresponding to the network card can be captured.
Fig. 2 shows an effect diagram after a data packet is acquired in this embodiment of the application. As shown in fig. 2, after the data packet obtained in the embodiment of the present application is stored, the data packet is displayed to a user on a browser page, and meanwhile, relevant information of the data packet is presented, such as a size of the data packet, a protocol type, and creation time. The user can obtain the relevant information of the data packet according to the information presented on the browser page, and if the user wants to obtain the data packet, the user can download the data packet by clicking the download button 1 on the page.
In some embodiments, the packet capture method of the present application further includes:
and analyzing the data packet, and acquiring the flow data information of the data packet so as to visually display the flow data information.
In the embodiment of the application, the obtained data packet is analyzed, and the flow data information result obtained through analysis is displayed to the user in a visual mode, so that the user can visually obtain the flow data information of the data packet.
It is contemplated that the captured data packets are typically displayed to the user in a pcap formatted file for download by the user. The user can not know the content in the data packet before downloading, and after all the data packets need to be downloaded, the user can see the detailed content in the data packets by opening through an additional tool, so that the operation is complex, additional software needs to be downloaded, and the user experience is not good. Moreover, when the number of captured packets is large, the user consumes a lot of system resources when downloading all the packets, and the processing efficiency is also poor.
Therefore, in the embodiment of the application, the data packet is analyzed, including the data packet is read through application software, and specific information in the data packet is acquired. Fig. 3 shows data information obtained after reading data packets obtained under different capture parameters. As shown in fig. 3, the obtained data information includes information such as length information, source address, destination address, source port, destination port, application protocol type, number of packets, number of bytes of the data packet, and the like.
In some specific embodiments, analyzing the data packets includes obtaining a length of each data packet contained therein. After the lengths of all the data packets are obtained, the length information of different data packets is correspondingly displayed by using the visual graph according to the length information of different data packets, so that a user can obtain the distribution range of the length information of different data packets according to the visual graph. In some practical applications, the obtained data packets are analyzed, and most of the data packets have the length distributed in the range of 0-200Bytes, and the data packets having the length greater than 200Bytes, such as the data packets distributed in the ranges of 201-450Bytes, 451-800Bytes, 801-1200Bytes, 1201-1500Bytes and 1500Bytes, occupy less total number of the data packets. The user can select the data packet with the corresponding size for analysis according to the displayed analysis result, and can further subdivide the data packet within the range of 0-200Bytes to obtain the data packet within the target range. Of course, other flow data information can be acquired and visualized correspondingly.
In some embodiments, the traffic data information comprises at least one of: source address, destination address, source port, destination port, application protocol type, number of packets, number of bytes.
Fig. 4 shows an effect diagram of performing a visual presentation after analyzing a data packet in the embodiment of the present application. Part a in fig. 4 shows the distribution of the protocol types of different data packets, and it can be seen that, in all the data packets, the number of the data packets of the ICMP protocol type is the largest, and the number is between 400 and 500; the number of TCP protocol type packets is next, the number is close to 300; the number of data packets of the TLSv1.2 protocol type is the least, and is between 0 and 100. Therefore, the user can acquire the data packet of the corresponding protocol type for analysis according to the result displayed by the visual graph.
Part b of fig. 4 shows a packet list, and details of each packet are presented, including: source IP address, source port, destination IP address, destination port, application protocol type, packet length, etc. The detailed information set forth herein may be set according to the experience of a technician or the actual needs of the user and is not to be considered limiting herein. The user may arrange the data packets according to the source IP address in the presented data packet list, or view the presentation as needed, which is not limited here.
In some practical applications, the user may set the parameter information of interest as a filtering condition according to actual needs, for example, the source port or the source address of interest. The present application thus retrieves a data packet meeting the condition from the data information of the data packet according to the filtering condition set by the user, and generates a data packet list, please refer to fig. 5. The user may select and download from the filtered list of packets in fig. 5. Or the application can be displayed in a pie chart or a bar chart or the like according to the selection of the user, so that the user can check and analyze the data and then determine whether to download the data.
On the other hand, based on the same inventive concept, an embodiment of the present application further provides a packet capturing device, and fig. 6 is a block diagram of a structure of the packet capturing device provided in the embodiment of the present application. As shown in fig. 6, the bale plucking device includes:
the acquiring module 10 is configured to respond to a packet capturing request sent by a user and acquire packet capturing parameters according to the packet capturing request;
the generating module 20 is configured to generate a grabbing instruction based on the grabbing packet parameters;
and the grabbing module 30 is configured to perform data grabbing operation based on the grabbing instruction, acquire and store a corresponding data packet, so that the data packet can be downloaded by a user.
The packet capturing device in the embodiment of the present application can implement the packet capturing method provided in any embodiment of the present application through the configured functional module.
In some embodiments, the generating module is specifically configured to:
analyzing the packet capturing parameters to acquire first parameter information;
and generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
Fig. 7 is a block diagram of a packet capture device according to another embodiment of the present application. As shown in fig. 7, in some embodiments, the bale plucking device further includes, on the basis of the foregoing functional modules:
and the analysis module 40 is configured to analyze the data packet, acquire traffic data information of the data packet, and visually display the traffic data information.
The embodiment of the present application further provides a storage medium, where one or more programs are stored, and when the one or more programs are executed by a processor, the steps of the packet capture method provided in any embodiment of the present application are implemented.
The storage medium in the present embodiment may be one contained in an electronic device/system; or may exist alone without being assembled into an electronic device/system. The storage medium stores one or more programs, and when the one or more programs are executed, the steps of the control method provided according to the embodiment of the application are realized.
According to embodiments of the present application, the computer-readable storage medium may be a non-volatile computer-readable storage medium, which may include, for example but is not limited to: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. Optionally, the specific examples in this embodiment may refer to examples described in any embodiment of this application, and this embodiment is not described herein again. It will be apparent to those skilled in the art that the modules or steps of the present application described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.
Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present application with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the application. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, subject matter of the present application can lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the application should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The embodiments of the present application have been described in detail, but the present application is not limited to these specific embodiments, and those skilled in the art can make various modifications and modified embodiments based on the concept of the present application, and these modifications and modified embodiments should fall within the scope of the present application.
Claims (10)
1. A packet capture method, comprising:
responding to a packet capturing request sent by a user, and acquiring packet capturing parameters according to the packet capturing request;
generating a grabbing instruction based on the packet grabbing parameters;
and performing data grabbing operation based on the grabbing instruction, and acquiring and storing corresponding data packets for downloading by a user.
2. The method of claim 1, wherein the packet capture parameters comprise at least one of:
network device, source address, source port, destination address, destination port, protocol type.
3. The method of claim 2, wherein the generating a grab instruction based on the grab parameter comprises:
analyzing the packet capturing parameters to acquire first parameter information;
and generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
4. The method of claim 2, further comprising:
and traversing all the network equipment to generate a corresponding network equipment list so that the user can select the network equipment list when proposing the packet capturing request.
5. The method of claim 1, further comprising:
and analyzing the data packet, and acquiring the flow data information of the data packet so as to visually display the flow data information.
6. The method of claim 5, wherein the traffic data information comprises at least one of: source address, destination address, source port, destination port, application protocol type, number of packets, number of bytes.
7. A bale plucking apparatus comprising:
the acquisition module is configured to respond to a packet capturing request sent by a user and acquire packet capturing parameters according to the packet capturing request;
the generating module is configured to generate a grabbing instruction based on the packet grabbing parameters;
and the grabbing module is configured to perform data grabbing operation based on the grabbing instruction, acquire and store a corresponding data packet, so that the data packet can be downloaded by a user.
8. The apparatus of claim 7, wherein the generation module is specifically configured to:
analyzing the packet capturing parameters to acquire first parameter information;
and generating a packet capturing statement according to the first parameter information to generate the capturing instruction.
9. The apparatus of claim 7, further comprising:
and the analysis module is configured to analyze the data packet, acquire the traffic data information of the data packet and visually display the traffic data information.
10. A storage medium storing one or more programs which, when executed by a processor, implement the steps of a method according to any one of claims 1-6.
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