CN105049277B - A kind of network flow generation method based on data flow characteristics - Google Patents
A kind of network flow generation method based on data flow characteristics Download PDFInfo
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- CN105049277B CN105049277B CN201510308828.8A CN201510308828A CN105049277B CN 105049277 B CN105049277 B CN 105049277B CN 201510308828 A CN201510308828 A CN 201510308828A CN 105049277 B CN105049277 B CN 105049277B
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Abstract
The network traffic data generation method based on data flow characteristics that the present invention provides a kind of.The key of the present invention is that the characteristic attribute value by network data flow in unit interval window is introduced into network flow generation method.This method can be distributed according to the newly-increased network data flow quantity in the unit interval window of configuration, network data flow continuous time and its distribution, the message amount distribution of all types of network data flows, message transfer time and the characteristic values such as message size distribution, construct the network traffic data in unit interval window, it realizes that network traffic data generates, the characteristic attribute of the network flow generated in each time window is made to meet each characteristic attribute value of network data flow of configuration.Network traffic data generation method based on data flow characteristics can be generated with the time and the network traffic data for meeting particular community feature in the unit interval of fluctuating change.
Description
(1) technical field
The present invention relates to network flow generation techniques.
(2) background technology
The problem of traffic generating problem is always domestic and international academia, business circles extensive concern.Real traffic is in now netting
The every network security of support and the experiment of information security items and the extremely important resource of test job, compared to directly using instrument
The traditional analog flow of generation, live network flow have the characteristics that the various aspects such as the authenticity of content and feature, complexity, instrument
It cannot achieve the long-term network flow for meeting live network traffic characteristic of lasting generation.However, real traffic has instantaneous spy
Property, often there is not reproducibility and uncontrollability, be unfavorable for the positioning and analysis of problem when device emulation test；Meanwhile very
Real traffic source in real network environment, reacted user behavior, often carry a large amount of user behavior information and personal hidden
Personal letter ceases, this just significantly limits the permission use scope and service efficiency of real traffic.How according to main feature point
The network flow of cloth law generation approaching to reality data flows of traffic feature is the effective ways for solving the problems, such as real traffic and using,
Be lifting means test, network service, safety product test environment structure important channel.
Network flow generation method based on data flow characteristics is feature (five-tuple stream information, the data according to data flow
Flow size, the stream duration, stream the features such as quantity) regularity of distribution generates network flow.Uhlig, S. used stream in 2001
Arrival process, the size of stream and stream three variables of rate control the generation of flow, wherein take Poisson distribution control stream
Arrival process, the size of stream takes exponential distribution, flow in rate then take constant, Self-Similar Network Traffic can be generated.King
Peaks Lin et al. send a series of streams to generate flow using multiple windows threads, and each stream is described with four parameters：
The transmission time interval distribution of packet, the Size Distribution of packet, duration of stream, stream transmission interval.Time interval, packet size point
Cloth, stream transmission interval can be appointed as constant, be uniformly distributed, exponential distribution, normal distribution, pareto distributions and index point
Cloth.The different parameter distribution of user configuration controls transmitting terminal according to configuration information from controller end and asks transmission number to receiving terminal
According to generation flow.The Harpoon tools that University of Wisconsin-Madison pungent university's Madison branch school is developed use the thought of flow, in IP
Flow-level generates representative data traffic.Count and analyze the size of stream, Connection Time interval, source mesh IP
The experience of location, session number active in certain time etc. is distributed, and uses client-server form according to the distribution of these experiences
The generation for realizing flow, is consistent with the size of the byte of original flow, number-of-packet and stream.Ixia companies
BreakingPoint test platforms simulate corresponding mixed application stream to meet the needs of test according to user configuration.
In recent years, network size constantly expands, and network structure is increasingly sophisticated, leads to composition, the network flow of network flow
The complexity raising of characteristic, how according to traffic characteristic distribution generation and flow similar in real traffic, tested for equipment,
Improve network service and the development of safety product provides important technology and supports and ensure.On the one hand, by simulating true net
Network flow is Topological expansion, procotol is improved, network service quality improvement provides reliability and analysis on its rationality, with full
The increasingly increased network demand of foot, ensures the network service of stability and high efficiency；On the other hand, it is upgrading network equipment, network system
Increasing is built, safety product development provides reliable Testing Platform.
(3) invention content
The network flow generation method based on data flow characteristics that the object of the present invention is to provide a kind of.Data Stream on Networks
Feature generates the network flow transmitted on express network circuit using single device constructing network data stream, is surveyed for equipment
Examination improves network service and the development of safety product offer important technology support and ensures.
The present invention in order to realize its goal of the invention used by technical solution be：A kind of network flow based on data flow characteristics
Generation method is measured, is included the following steps：
1) each time window network data flow characteristic attribute is loaded, including：In the newly-increased network number of each time window
According to stream quantity, network data flow continuous time and its distribution, the message amount distribution of all types of network data flows, message transfer time point
The characteristic values such as cloth and message size distribution；
2) in network flow generating process, when each time window starts, according to the actual time window of configuration
Newly-increased network data flow quantity newly sets up the network data flow of respective numbers, and true according to network data flow continuous time and its distribution
The fixed stream duration window；
3) it according to the statistical information of actual time window network data flow, determines and needs to send network data message at this moment
Network data stream information,
4) according to the network data stream information currently selected, transport layer protocol message information is determined；
5) according to the transport layer protocol state of network data flow, the data message type of present construction is determined, then basis
The Size Distribution of data message determines the size of network data message load；
6) the transport layer header message of constructing network data message；
7) data network network layers stem is constructed according to the transport layer information of network data flow；
8) according to data network network layers information, data link layer stem is constructed；
9) according to network message transmission time distribution characteristics, network data stream packet sending time is determined；
10) the network data stream packet of construction is sent in the network of determining network interface；
11) according to actual time window network data message amount, determine whether that also network data message needs to construct
Transmission if it is continues next network data message construction and transmission, modulation to step 3；
12) judge whether that the network traffic data of also next time window needs to generate, if it is turn to jump to step
Rapid 2；Otherwise, task terminates.
A kind of network flow generation method based on data flow characteristics provided by the invention, has the following advantages:The present invention
The network traffic data for meeting particular network data flow characteristics attribute can be generated, compared to the tradition for directly using instrument to generate
Analogue flow rate, the invention can meet the network of particular network data flow characteristics attribute changed over time long lasting for generation
Data traffic, while the network data stream for meeting live network traffic characteristic attribute can be also generated, avoid true stream
Amount allows the problem of use scope；It is different from the past that transmission form generation is interacted towards connection using client and server
Network flow, but use single device constructing network data flow, the connection-oriented of an independent direction can be generated
Network traffic data can also generate two-way connection-oriented network traffic data, wherein sending out report from different network interfaces
Text respectively represents the network traffic data that client is sent out or server end is sent out；There is no communicating pair friendships for this method simultaneously
Time delay situation caused by mutually, therefore it is capable of the generation network traffic data of higher speed.
(4) it illustrates
Attached drawing 1 is the network flow generation method flow chart based on data flow characteristics；
Attached drawing 2 is the network topological diagram of the embodiment of the present invention.
(5) specific implementation mode
The implementation of the present invention is described in detail below in conjunction with attached drawing.
Include the following steps：
1) each time window network data flow characteristic attribute is loaded, including：In the newly-increased network number of each time window
According to stream quantity, network data flow continuous time and its distribution, the message amount distribution of all types of network data flows, message transfer time point
The characteristic values such as cloth and message size distribution.These statistical characteristics can derive from network traffic analysis system to live network data
It is acquired the statistical nature of processing.
2) in network flow generating process, when each time window starts, according to the actual time window of configuration
Newly-increased network data flow quantity newly sets up the network data flow of respective numbers, and true according to network data flow continuous time and its distribution
The fixed stream duration window.Thus it controls in the newly generated network data flow quantity of the time window, while determining network
At the beginning of data flow and the end time of network data flow.In the time window, not only there is newly-increased network data flow, also wrap
Network data flow existing for previous time window is included, these data flows also generate network traffic data in the time window.Newly
The network protocol type of generation includes TCP, UDP, SCTP etc..The effective protocol information of the protocol data-flow is generated at random.
3) according to the statistical information of the generation network data message amount of actual time window network data flow, by uniform
The random function of distribution determines the network data stream information of a transmission network data message.
4) according to the network data stream information currently selected, it can determine the agreement for the network data message that will be generated,
Including transport layer, network layer and data link layer protocol.
5) transport layer protocol and transmission state can determine according to the information of network data flow.The foundation that is attached or
Person carries out the construction of load message, and according to the Size Distribution of data message, load is chosen by equally distributed random function
The data length of message.
6) according to transport layer protocol state and load information, the transport layer header message of constructing network data message.
7) data network network layers stem is constructed according to the transport layer information of network data flow.
8) according to data network network layers information, data link layer stem is constructed.
9) according to network message transmission time statistical distribution, network data stream packet sending time is determined.
10) the network data stream packet of construction is sent in the network of determining network interface, in the present invention some net
Network interface can represent client or server end, show that this rectifies the network data flow for sending some direction.Net shown in Fig. 2
Network topological diagram can generate the connection-oriented network number in an independent direction using single device constructing network data flow
According to flow, two-way connection-oriented network traffic data can be also generated, wherein sending out message difference from different network interfaces
Represent the network traffic data that client is sent out or server end is sent out.
11) according to actual time window network data message amount, determine whether that also network data message needs to construct
Transmission if it is continues next network data message construction and transmission, modulation to step 3.
12) judge whether that the network traffic data of also next time window needs to generate, if it is turn to jump to step
Rapid 2；Otherwise, task terminates.
Claims (4)
1. a kind of network flow generation method based on data flow characteristics is generated using single device constructing network data stream
The network flow transmitted on express network circuit, can generate with the time and fluctuating change meets each spy in the unit interval
Levy the network traffic data of attribute value, it is characterised in that this approach includes the following steps：
1) each time window network data flow characteristic attribute is loaded, including：In the newly-increased network data flow of each time window
When quantity, network data flow continuous time and its distribution, the network message distributed number of all types of network data flows, network message transmission
Between distribution and network message Size Distribution；
2) in network flow generating process, when each time window starts, according to the newly-increased of the actual time window of configuration
Network data flow quantity newly sets up the network data flow of respective numbers, and being determined according to network data flow continuous time and its distribution should
Flow duration window；
3) according to the statistical information of actual time window network data flow, the network number for needing to send network message at this moment is determined
According to stream information；
4) according to the network data stream information currently selected, transport layer protocol message information is determined；
5) according to the transport layer protocol state of network data flow, the network message type of present construction is determined, then according to network
The Size Distribution of message determines the size of network message load；
6) the transport layer stem of tectonic network message；
7) network layer header of tectonic network message；
8) the data link layer stem of tectonic network message；
9) according to network message transmission time distribution characteristics, network message sending time is determined；
10) network message of construction is sent in the network of determining network interface；
11) according to actual time window network message quantity, determine whether that also network message needs to construct transmission, if it is
Continue next network message construction and transmission, modulation to step 3；
12) judge whether that the network traffic data of also next time window needs to generate, if it is turn to jump to step 2；
Otherwise, task terminates.
2. a kind of network flow generation method based on data flow characteristics according to claim 1, it is characterised in that：It is different
The connection-oriented network flow of transmission form generation is interacted using client and server in previous, but is set using separate unit
Standby constructing network data flow, can generate the connection-oriented network traffic data in an independent direction, can also generate two-way
Connection-oriented network traffic data；Time delay situation caused by this method is interacted there is no communicating pair simultaneously, because
This is capable of the generation network traffic data of higher speed.
3. a kind of network flow generation method based on data flow characteristics according to claim 1, it is characterised in that：Step
5) " according to the transport layer protocol state of network data flow, determining the network message type of present construction " described in, refers to current
The network message of generation is the handshaking information of network data flow connection, the handshaking information containing load data, response message or contains
There is the network message of load data.
4. a kind of network flow generation method based on data flow characteristics according to claim 1, it is characterised in that：Step
10) " being sent to the network message of construction in the network of determining network interface " described in refers to by connecting network line one
The network interface at end sends network message, and network message is made to flow through the other end that network line reaches network line, realizes in net
The network flow of winding thread road a direction is transmitted.
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