CN107579862B - Method for measuring network communication capability of equipment - Google Patents
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Abstract
The invention discloses a method for measuring network communication capacity of equipment. The method comprises the following steps executed by software installed on a test computer connected with a tested device network: simulating ARP attack, and measuring the broadcast data processing capacity of the tested equipment; simulating ICMP attack and testing the capability of the tested device for processing PING data; simulating the socket connection establishing and disconnecting process, and measuring the socket connection processing capacity of the tested equipment; and simulating the half-connection establishing and disconnecting process, and measuring the capability of the tested device for processing the half-connection. The network communication capability of the equipment can be evaluated more comprehensively and convincingly by four tests. By applying the method of the invention, the network communication capability of the electronic equipment can be tested before the electronic equipment leaves the factory so as to judge whether the electronic equipment can be well adapted to the actual complex network environment.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to a method for measuring network communication capacity of equipment.
Background
Network communication is a new communication mode generated by combining computer and communication, and is the basis on which various computer communication networks are established. The development of network communication has been over 30 years old, and network communication is playing an increasingly important role in the process of human entering the information society.
Currently, there are more and more devices with network communication capabilities. However, many devices can only operate normally in a relatively clean and simple network environment, and when the network environment becomes complicated, for example, there is a lot of useless data or interference data entering the network, some devices cannot operate normally because of the inability to filter the useless data effectively. Therefore, before leaving the factory, the device should be tested for network communication capability to determine whether it can better adapt to the actual network environment of the work site.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for measuring the network communication capacity of equipment, which initiates test attack on the equipment to be tested by simulating the data packet content of each subprotocol of TCP/IP, so as to realize the automatic measurement of the network communication capacity of the equipment to be tested.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of measuring network communication capabilities of a device, comprising the following steps performed by software installed on a test computer network connected to the device under test:
simulating ARP (Address Resolution Protocol) attack, and measuring the broadcast data processing capacity of the tested equipment;
simulating ICMP (Internet Control Message Protocol) attack and measuring the capability of the tested equipment for processing PING data;
simulating the socket connection establishing and disconnecting process, and measuring the socket connection processing capacity of the tested equipment;
and simulating a half-connection establishing and disconnecting process (also called flood attack) and measuring the capability of the tested device for processing the half-connection.
Further, the simulating ARP attack measures the capability of the device under test to process broadcast data, and specifically includes:
establishing a simulated ARP broadcast data packet according to the data structure and the rule of ARP, wherein the destination IP (Internet Protocol Address) Address and the destination MAC (Media Access Control) Address are the IP Address and the MAC Address of the tested equipment;
the ARP broadcast data packet is sent to a network cycle, and the return data of the tested equipment is received;
the maximum value of the number of ARP broadcast data packets which can be correctly processed in the unit time of the tested device is obtained by gradually reducing the period of sending the data packets (namely, gradually increasing the data sending rate).
Further, the simulating the ICMP attack measures the capability of the device under test to process PING data, and specifically includes:
constructing a simulated ICMP data packet according to the data structure and the rule of the ICMP, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested device;
the ICMP data packet is sent to a network cycle, and the return data of the tested equipment is received;
the maximum value of the number of ICMP data packets which can be correctly processed in unit time of the tested device is obtained by gradually reducing the period of sending the data packets.
Further, simulating the socket connection establishment and disconnection process, and measuring the socket connection processing capability of the device to be tested specifically include:
constructing a simulated request data packet and a simulated response data packet according to the connection rule of the socket, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested equipment;
simulating socket connection establishment and disconnection processes: start a socket connection set up and disconnect cycle: sending a request data packet to a network, receiving confirmation data returned by the tested equipment, and sending the response data packet to the network; disconnecting the socket connection. Repeating the socket connection establishment and disconnection cycle.
By gradually reducing the period of socket connection establishment and disconnection, the maximum value of the number of times that socket connection establishment and disconnection can be completed per unit time is obtained.
Further, the simulating the half-connection establishing and disconnecting process measures the capability of the device under test for processing the half-connection, and specifically includes:
constructing a simulated request data packet according to the connection rule of the socket, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested equipment;
simulating a half-connection establishment and disconnection process: start a half connection set up and disconnect cycle: establishing a half connection: sending the request data packet to a network, and receiving confirmation data returned by the tested equipment; disconnecting the semi-connection after the semi-connection is established; repeating the half connection establishment and disconnection cycle.
By gradually reducing the period of the semi-connection establishment and disconnection, the maximum value of the number of times that the semi-connection and disconnection can be completed per unit time is obtained.
Further, the method further comprises: and respectively scoring the obtained broadcast data processing capacity, PING data processing capacity, socket connection processing capacity and semi-connection processing capacity of the tested equipment, and performing weighted summation on each score to obtain the network communication capacity of the tested equipment which is quantitatively represented.
Compared with the prior art, the invention has the following beneficial effects:
the method for measuring the network communication capacity of the equipment measures the broadcast data processing capacity of the equipment to be measured, simulates ICMP attack, measures the PING data processing capacity of the equipment to be measured, simulates the socket connection establishment and disconnection process, measures the socket connection processing capacity of the equipment to be measured, simulates the half connection establishment and disconnection process, measures the half connection processing capacity of the equipment to be measured, and realizes that the network communication capacity of the equipment to be measured is automatically measured by simulating the data packet content of a plurality of TCP/IP sub-protocols and initiating test attack on the equipment to be measured. The network communication capacity of the equipment can be evaluated more comprehensively and convincingly by adopting four tests. By applying the method of the invention, the network communication capability of the electronic equipment can be tested before the electronic equipment leaves the factory so as to judge whether the electronic equipment can be well adapted to the actual complex network environment.
Drawings
Fig. 1 is a flowchart of a method for measuring network communication capability of a device according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an ARP packet format;
fig. 3 is a schematic diagram of an ICMP message format.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A flowchart of a method for measuring network communication capability of a device according to an embodiment of the present invention is shown in fig. 1, and the method includes the following steps executed by software installed on a test computer network-connected to the device under test:
ARP is a TCP/IP subprotocol that obtains a physical address from an IP address. When the host sends information, the ARP request containing the target IP address is broadcasted to all hosts on the network, and the return message containing the MAC is received, so that the physical address of the target is determined; after receiving the return message, the IP address and the physical address are stored in the local ARP cache and are kept for a certain time, and the ARP cache is directly inquired when the next request is made so as to save resources. The step is to measure the ability of the tested device to process the broadcast data by ARP attack, namely, simulating the host to broadcast the ARP request containing the IP address of the tested device on the network, and receiving the return message.
ICMP is a sub-protocol of the TCP/IP protocol family that is used to pass control messages between IP hosts and routers. Control messages refer to messages of the network itself, such as network traffic down, whether a host is reachable, whether routing is available, etc. These control messages, although not transmitting user data, play an important role in the delivery of user data. ICMP protocols are often used in networks, such as the PING command often used to check for network traffic, and the PING process is actually the ICMP protocol operation process. PING also belongs to a communication protocol and is part of the TCP/IP protocol. The PING command can be used for checking whether the network is connected or not, and analyzing and judging network faults. The method comprises the following steps of measuring the capability of the tested device for processing PING data by simulating an ICMP attack, namely a PING process.
two programs on the network effect the exchange of data via a bidirectional communication link, one end of which is called a socket. socket is essentially the encapsulation of TCP/IP by a programming interface, and TCP/IP provides an interface for programmers to use for network development, namely the socket programming interface. The socket connection process involves three handshakes:
1) the client initiates a connection request;
2) the server side confirms the connection request;
3) the client confirms the connection again.
In the step, the socket connection processing capacity of the tested equipment is measured by simulating the socket connection establishment (three-way handshake) and disconnection processes. The capability of the device under test to process the socket connection is generally expressed by how many times the socket connection establishment and disconnection process can be completed in a unit time.
And step 104, simulating the half-connection establishing and disconnecting process, and measuring the capability of the tested device for processing the half-connection.
Semi-connections are also known as flood attacks. The flood attack is an attack technique commonly used by hackers at present, and is characterized by simple implementation, great power and mostly invisible defense system. The establishment of the half-connection only comprises the first two handshakes 1) and 2) of the above-mentioned three handshakes. Since it is not a complete three-way handshake, it is visually referred to as a half-connection. The step is to measure the capability of the tested equipment to process the semi-connection by simulating the semi-connection establishment and disconnection process. The ability of the device under test to handle semi-connections is generally expressed in terms of how many times the semi-connection set-up and disconnection processes can be completed per unit time.
In the embodiment, the network communication capability of the tested device is automatically measured by simulating the data packet content of a plurality of sub-protocols of TCP/IP and launching test attack to the tested device. Each of the four tests can independently reflect the network communication capability of the applied tested equipment, and the four tests can more comprehensively measure the comprehensive communication capability of the equipment and are more persuasive. By applying the method of the embodiment, the network communication capability of the electronic equipment can be tested before the electronic equipment leaves a factory so as to judge whether the electronic equipment can be well adapted to the actual complex network environment.
As an optional embodiment, the simulating ARP attack and measuring the capability of the device under test to process broadcast data specifically includes:
step 1011, constructing a simulated ARP broadcast data packet according to the ARP data structure and rules, wherein the target IP address and the target MAC address are the IP address and the MAC address of the equipment to be tested;
step 1012, sending the ARP broadcast packet to the network cycle, and receiving the returned data of the device under test;
and 1013, gradually reducing the period of sending the data packets to obtain the maximum value of the number of the ARP broadcast data packets which can be correctly processed in the unit time of the tested device.
The embodiment provides a technical scheme for realizing the measurement of the broadcast data processing capacity of the tested equipment by simulating the ARP attack, and the broadcast data processing capacity of the tested equipment is measured by the steps of constructing a simulated ARP broadcast data packet, sending the ARP broadcast data packet to a network, receiving the return data of the tested equipment and the like. The ARP message format is shown in fig. 2, where each row is represented by 32 bits, i.e., 4 8-bit groups. The ARP message format is not described in detail here. In the embodiment, the maximum value of the number of the ARP broadcast data packets which can be correctly processed by the tested equipment in unit time represents the broadcast data processing capacity of the tested equipment, and the larger the maximum value is, the stronger the broadcast data processing capacity of the tested equipment is. The maximum value is obtained by gradually decreasing the period of transmitting the data packet, that is, increasing the transmission rate of the data packet. When the sending rate is small, the tested device can normally receive, analyze and return data. When the sending rate is increased to a certain value, the device to be tested cannot normally work, for example, the device to be tested cannot normally receive data, or the received data cannot be correctly analyzed, so that the test software cannot receive the data returned by the device to be tested, or the returned data is incorrect. Therefore, whether the tested equipment works normally can be judged. When the tested device can just work normally, the number of ARP broadcast data packets which can be correctly processed in unit time is the maximum value.
As an optional embodiment, the simulating ICMP attack and measuring the capability of the device under test to process PING data specifically include:
step 1021, building a simulated ICMP data packet according to the ICMP data structure and rule, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested device;
step 1022, periodically sending the ICMP packet to a network, and receiving the returned data of the device under test;
and 1023, gradually reducing the period of sending the data packets to obtain the maximum value of the number of ICMP data packets which can be correctly processed in unit time of the tested equipment.
The embodiment provides a technical scheme for realizing the capability of simulating ICMP attack measurement of the PING data processing of the tested device, and the capability of the tested device for processing the PING data is measured by the steps of constructing a simulated ICMP data packet, sending the ICMP data packet to a network, receiving the return data of the tested device and the like. The ICMP message format is shown in fig. 3, and includes a packet header 8 bytes long, where the first 4 bytes are in a fixed format, and include an 8-bit type field, an 8-bit code field, and a 16-bit checksum; the last 4 bytes take different values depending on the type of ICMP packet. The ICMP message format will not be described in detail here. In the embodiment, the capability of the tested device for processing PING data is represented by the maximum value of the number of ICMP data packets which can be correctly processed by the tested device in unit time, and the greater the maximum value is, the stronger the capability of the tested device for processing PING data is. The maximum value is obtained by gradually decreasing the period of transmitting the data packet, that is, increasing the transmission rate of the data packet. When the sending rate is small, the tested device can normally receive, analyze and return data. When the sending rate is increased to a certain value, the device to be tested cannot normally work, for example, the device to be tested cannot normally receive data, or the received data cannot be correctly analyzed, so that the test software cannot receive the data returned by the device to be tested, or the returned data is incorrect. Therefore, whether the tested equipment works normally can be judged. When the tested device just can work normally, the number of the ICMP data packets which can be correctly processed in unit time is the maximum value.
As an optional embodiment, the simulating the socket connection establishment and disconnection process and measuring the capability of the device under test to process the socket connection specifically include:
step 1031, constructing a simulated request data packet and a simulated response data packet according to the connection rule of the socket, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested equipment;
step 1032, simulating socket connection establishment and disconnection processes: start a socket connection set up and disconnect cycle: sending a request data packet to a network, receiving confirmation data returned by the tested equipment, and sending the response data packet to the network; disconnecting the socket connection. Repeating the socket connection establishment and disconnection cycle.
Step 1033, by gradually reducing the period of socket connection establishment and disconnection, obtaining a maximum value of the number of times that socket connection establishment and disconnection can be completed in unit time.
The embodiment provides a technical scheme for simulating the socket connection establishment and disconnection process and measuring the socket connection processing capacity of the tested equipment. Firstly, step 1031 constructs a simulated request data packet and a simulated response data packet according to the connection rule of socket; step 1032 then simulates the socket connection establishment and disconnection process. Establishing a complete socket connection requires completing the three-way handshake, the test software simulates a client in the three-way handshake, and the tested device is a server. Sending a request data packet to a network, and simulating first handshake; the tested equipment receives the request data packet and returns confirmation data, and the test software receives the confirmation data returned by the tested equipment and simulates second handshake; and the test software sends a response data packet to the network after receiving the confirmation data, simulates the third handshake, and completes the socket connection. The test software then disconnects and a socket connection set up and disconnect cycle ends and the next cycle begins. Finally, step 1033 is to gradually reduce the period of socket connection establishment and disconnection, so that the device under test can just work normally, and obtain the maximum value of the number of times that socket connection establishment and disconnection can be completed in unit time. The larger the maximum value is, the stronger the capability of the tested equipment for processing socket connection is.
As an optional embodiment, the simulating the half-connection establishment and disconnection process and measuring the capability of the device under test to process the half-connection specifically include:
step 1041, constructing a simulated request data packet according to a socket connection rule, wherein a destination IP address and a destination MAC address are an IP address and an MAC address of the device under test;
step 1042, simulating the half-connection establishment and disconnection process: start a half connection set up and disconnect cycle: establishing a half connection: sending the request data packet to a network, and receiving confirmation data returned by the tested equipment; disconnecting the semi-connection after the semi-connection is established; repeating the half connection establishment and disconnection cycle.
Step 1043, obtaining the maximum value of the number of times that the semi-connection and disconnection can be completed in the unit time by gradually reducing the period of the semi-connection establishment and disconnection.
The embodiment provides a technical scheme for simulating the semi-connection establishment and disconnection process and measuring the semi-connection processing capacity of the tested equipment. Basically the same as the solution of the previous embodiment, except that the half-connection only needs to complete two handshakes, and therefore, the present embodiment will not be further described here.
As an alternative embodiment, the method further comprises: and respectively scoring the obtained broadcast data processing capacity, PING data processing capacity, socket connection processing capacity and semi-connection processing capacity of the tested equipment, and performing weighted summation on each score to obtain the network communication capacity of the tested equipment which is quantitatively represented.
The embodiment provides a method for obtaining comprehensive network communication capacity of the tested device by respectively scoring four measurement results. The foregoing embodiment only provides the network communication capabilities respectively represented by the four measurement results, and although the network communication capabilities of the device under test can also be represented, the four measurement results are not integrated, so that the advantages and disadvantages of the network communication capabilities between different devices under test cannot be conveniently compared, and the network communication capabilities of the device under test cannot be evaluated in a grade (such as excellent, good, qualified, and unqualified) conveniently. In this embodiment, the four measurement results are respectively scored, and then the four scores are weighted and summed to obtain a comprehensive score. For example, each full score may be defined as 100 scores, and the weighting coefficient of each measurement score is set according to the importance of four measurements, and the final composite score may be conveniently obtained by multiplying each score by the corresponding weighting coefficient and summing. The comprehensive score of the network communication capability of the tested equipment is obtained, and the grade of the network communication capability of the tested equipment can be conveniently obtained by specifying thresholds of excellent, good, qualified, unqualified and the like.
The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which all equivalent changes, modifications, or equivalent scaling-up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (6)
1. A method of measuring network communication capability of a device, comprising the steps performed by software installed on a test computer network connected to the device under test of:
simulating ARP attack, and measuring the broadcast data processing capacity of the tested equipment by broadcasting data to the tested equipment and detecting whether the returned data of the tested equipment is normal;
simulating ICMP attack, and measuring the capability of the tested device for processing PING data by broadcasting data to the tested device and detecting whether the returned data of the tested device is normal;
simulating the socket connection establishing and disconnecting process, and measuring the socket connection processing capacity of the tested equipment by broadcasting data to the tested equipment and detecting whether the returned data of the tested equipment is normal;
simulating the semi-connection establishment and disconnection process, and measuring the capability of the tested device for processing the semi-connection by broadcasting data to the tested device and detecting whether the returned data of the tested device is normal.
2. The method according to claim 1, wherein the simulating ARP attack to measure the capability of the device under test to process broadcast data specifically comprises:
constructing a simulated ARP broadcast data packet according to the ARP data structure and the rule, wherein the target IP address and the target MAC address are the IP address and the MAC address of the tested equipment;
the ARP broadcast data packet is sent to a network cycle, and the return data of the tested equipment is received;
the maximum value of the number of ARP broadcast data packets which can be correctly processed in unit time of the tested equipment is obtained by gradually reducing the period of sending the data packets.
3. The method according to claim 1, wherein the simulating ICMP attack and measuring capability of the device under test for processing PING data specifically comprises:
constructing a simulated ICMP data packet according to the data structure and the rule of the ICMP, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested device;
the ICMP data packet is sent to a network cycle, and the return data of the tested equipment is received;
the maximum value of the number of ICMP data packets which can be correctly processed in unit time of the tested device is obtained by gradually reducing the period of sending the data packets.
4. The method for measuring network communication capability of a device according to claim 1, wherein the simulating of socket connection establishment and disconnection process and the measuring of the capability of the device under test for processing socket connection specifically include:
constructing a simulated request data packet and a simulated response data packet according to the connection rule of the socket, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested equipment;
simulating socket connection establishment and disconnection processes: start a socket connection set up and disconnect cycle: sending a request data packet to a network, receiving confirmation data returned by the tested equipment, and sending the response data packet to the network; disconnecting the socket connection; repeating the socket connection establishment and disconnection cycle;
by gradually reducing the period of socket connection establishment and disconnection, the maximum value of the number of times that socket connection establishment and disconnection can be completed per unit time is obtained.
5. The method for measuring network communication capability of a device according to claim 1, wherein the simulating the semi-connection establishment and disconnection process, measuring capability of the device under test for processing semi-connection, specifically comprises:
constructing a simulated request data packet according to the connection rule of the socket, wherein the destination IP address and the destination MAC address are the IP address and the MAC address of the tested equipment;
simulating a half-connection establishment and disconnection process: start a half connection set up and disconnect cycle: establishing a half connection: sending the request data packet to a network, and receiving confirmation data returned by the tested equipment; disconnecting the semi-connection after the semi-connection is established; repeating said semi-connection establishment and disconnection cycle;
by gradually reducing the period of the semi-connection establishment and disconnection, the maximum value of the number of times that the semi-connection and disconnection can be completed per unit time is obtained.
6. The method of measuring device network communication capability of any of claims 1-5, the method further comprising: and respectively scoring the obtained broadcast data processing capacity, PING data processing capacity, socket connection processing capacity and semi-connection processing capacity of the tested equipment, and performing weighted summation on each score to obtain the network communication capacity of the tested equipment which is quantitatively represented.
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Address after: 644000 Building 9, Jinrun Industrial Park, Xuzhou District, Yibin City, Sichuan Province Patentee after: Sichuan Security Control Technology Co.,Ltd. Address before: 100095 building 6, yard 9, Dijin Road, Haidian District, Beijing Patentee before: BEIJING ECHO TECHNOLOGIES Co.,Ltd. |