CN105049277A - Network flow generation method based on data flow features - Google Patents
Network flow generation method based on data flow features Download PDFInfo
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- CN105049277A CN105049277A CN201510308828.8A CN201510308828A CN105049277A CN 105049277 A CN105049277 A CN 105049277A CN 201510308828 A CN201510308828 A CN 201510308828A CN 105049277 A CN105049277 A CN 105049277A
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Abstract
The invention provides a network flow generation method based on data flow features. The key is to introduce the feature attribute value of a network data flow in a unit time window into a network flow generation method. The method can construct the network data flow in the unit time window according to feature values of a configured new network data flow in the unit time window, network data flow duration distribution, message quantity distribution of each type of network data flows, message transmission time distribution and message dimension distribution and the like, realizes network data flow generation and enables the feature attribute of the network flow generated in each time window to accord with each configured feature attribute value of the network data flows. The network flow generation method based on the data flow features can generate the network data flow which fluctuates and changes along with time and accords with specific attribute features in unit time.
Description
(1) technical field
The present invention relates to network traffics generation technique.
(2) background technology
Traffic generating problem is the problem of domestic and international academia, business circles extensive concern always.In existing network, real traffic supports every network security and the every experiment of information security and the extremely important resource of test job, the traditional analog flow generated compared to directly adopting instrument, live network flow has each side feature such as authenticity, complexity of content and feature, and instrument cannot realize continuing to produce the long-term network traffics meeting live network traffic characteristic.But real traffic has temporal properties, often there is not reproducibility and uncontrollability, the location of problem and analysis when being unfavorable for that device emulation is tested; Meanwhile, real traffic derives from real network environment, has reacted user behavior, often carries a large amount of user behavior information and individual privacy information, and this just significantly limit the permission scope of application and the service efficiency of real traffic.The network traffics how generating approaching to reality data flows of traffic feature according to the regularity of distribution of principal character solve the effective ways that real traffic uses problem, is also the important channel of lifting means test, network service, safety product test environment structure.
Network traffics generation method based on data flow characteristics is that feature according to the data flow regularity of distribution such as (quantity of five-tuple stream information, data stream size, stream duration, stream feature) produces network traffics.Uhlig, S. use the arrival process of stream, the size of stream and speed three variablees of stream to control the generation of flow in calendar year 2001, wherein take the arrival process of Poisson distribution control flow check, the size of stream takes exponential distribution, in stream, speed then takes constant, can produce Self-Similar Network Traffic.The people such as WangLin Feng utilize multiple windows thread to send a series of stream to generate flow, describe by four parameters for each stream: the transmission time interval distribution of bag, the distribution of sizes of bag, the duration of stream, the transmission interval of stream.The transmission interval of the time interval, bag distribution of sizes, stream can be appointed as constant, be uniformly distributed, exponential distribution, normal distribution, pareto distribution and exponential distribution.User configures different parameter distribution, controls transmitting terminal send data generation flow to receiving terminal request by controller end according to configuration information.The Harpoon instrument of University of Wisconsin-Madison pungent university's Madison branch school development adopts the thought of flow, produces representative data traffic at IPflow-level.Add up and the experience distribution of the size of analysis stream, connect hours interval, order IP address, source, the interior active session number of certain hour etc., and adopt client-server form to realize the generation of flow according to the distribution of these experiences, be consistent with the size of the byte of original flow, number-of-packet and stream.The BreakingPoint test platform of Ixia company configures according to user, and simulation corresponding mixing application flow meets the needs of test.
In recent years, network size constantly expands, network configuration is increasingly sophisticated, the complexity of the composition of network traffics, network traffics characteristic is caused to improve, how produce the flow close with real traffic according to traffic characteristic distribution, for testing of equipment, the development that improves network service and safety product provide important technology support and guarantee.On the one hand, by network traffics that is virtually reality like reality be Topological expansion, procotol is improved, network service quality improves provides reliability and analysis on its rationality, to meet the network demand that day by day increases, ensures the network service of stability and high efficiency; On the other hand, for upgrading network equipment, network system increase build, safety product development reliable Testing Platform is provided.
(3) summary of the invention
The object of this invention is to provide a kind of network traffics generation method based on data flow characteristics.Data Stream on Networks feature, adopts single device constructing network data stream, is created on the network traffics that express network circuit transmits, for testing of equipment, the development that improves network service and safety product provide important technology support and guarantee.
The present invention in order to the technical scheme realizing its goal of the invention and adopt is: a kind of network traffics generation method based on data flow characteristics, comprises the following steps:
1) load each time window network data flow characteristic attribute, comprising: in characteristic values such as the message amount distribution of the newly-increased network data flow quantity of each time window, network data flow continuous time and its distribution, all types of network data flow, message transfer time distribution and message size distributions;
2) in network traffics generative process, when each time window starts, newly set up the network data flow of respective numbers according to the newly-increased network data flow quantity of the actual time window of configuration, and determine according to network data flow continuous time and its distribution the time window that this stream continues;
3) according to the statistical information of actual time window network data flow, the network data stream information needing at this moment to send network data message is determined,
4) according to the network data stream information of current selection, transport layer protocol message information is determined;
5) according to the transport layer protocol state of network data flow, determine the data message type of present construction, then according to the distribution of sizes of data message, determine the size of network data message load;
6) the transport layer header message of constructing network data message;
7) according to the transport layer information construction data network layer header of network data flow;
8) according to data network network layers information, construction data link layer stem;
9) according to network message transmission time distribution characteristics, network data stream packet transmitting time is determined;
10) the network data stream packet of structure is sent to determines in the network of network interface;
11) according to actual time window network data message amount, determine whether that network data message needs structure transmission in addition, if it is proceed next network data message structure and transmission, modulation is to step 3;
12) judge whether that the network traffic data of next time window in addition needs to generate, if it is turn and jump to step 2; Otherwise task terminates.
A kind of network traffics generation method based on data flow characteristics provided by the invention, have the following advantages: the present invention can produce the network traffic data meeting particular network data flow characteristics attribute, the traditional analog flow generated compared to directly adopting instrument, this invention can continue to produce the time dependent network traffic data meeting particular network data flow characteristics attribute for a long time, also can produce the network data stream meeting live network traffic characteristic attribute simultaneously, avoid the problem that real traffic allows the scope of application; Employing client and server different from the past carries out alternating transmission form and produces connection-oriented network traffics, but adopt single device constructing network data flow, the connection-oriented network traffic data in an independent direction can be produced, also can produce two-way connection-oriented network traffic data, wherein send message from different network interfaces and represent client respectively and send or the network traffic data that sends of server end; There is not the time delay situation that communicating pair causes alternately in the method simultaneously, therefore, it is possible to generation network traffic data more at a high speed.
(4) accompanying drawing explanation
Accompanying drawing 1 is the network traffics generation method flow diagram based on data flow characteristics;
Accompanying drawing 2 is the network topological diagram of the embodiment of the present invention.
(5) embodiment
Below in conjunction with accompanying drawing, enforcement of the present invention is described in detail.
Comprise the following steps:
1) load each time window network data flow characteristic attribute, comprising: in characteristic values such as the message amount distribution of the newly-increased network data flow quantity of each time window, network data flow continuous time and its distribution, all types of network data flow, message transfer time distribution and message size distributions.These statistical characteristics can derive from network traffic analysis system carries out acquisition process statistical nature to live network data.
2) in network traffics generative process, when each time window starts, newly set up the network data flow of respective numbers according to the newly-increased network data flow quantity of the actual time window of configuration, and determine according to network data flow continuous time and its distribution the time window that this stream continues.Control the network data flow quantity newly produced at this time window thus, determine the time started of network data flow and the end time of network data flow simultaneously.At this time window, not only have newly-increased network data flow, also comprise the network data flow that previous time window exists, these data flow also produce network traffic data at this time window.The network protocol type of new generation comprises TCP, UDP, SCTP etc.The effective protocol information of this protocol data-flow of stochastic generation.
3) according to the statistical information of the generation network data message amount of actual time window network data flow, by equally distributed random function, a network data stream information sending network data message is determined.
4) according to the network data stream information of current selection, the agreement of the network data message that will produce can be determined, comprise transport layer, network layer and data link layer protocol.
5) transport layer protocol and transmission state can be determined according to the information of network data flow.Carry out establishment of connection or carry out the structure of load message, according to the distribution of sizes of data message, chosen the data length of load message by equally distributed random function.
6) according to transport layer protocol state and load information, the transport layer header message of constructing network data message.
7) according to the transport layer information construction data network layer header of network data flow.
8) according to data network network layers information, construction data link layer stem.
9) according to network message transmission time Distribution Statistics, network data stream packet transmitting time is determined.
10) be sent to by the network data stream packet of structure and determine in the network of network interface, certain network interface can represent client or server end in the present invention, shows that this rectifies the network data flow sending some directions.Network topological diagram shown in Fig. 2, adopt single device constructing network data flow, the connection-oriented network traffic data in an independent direction can be produced, also can produce two-way connection-oriented network traffic data, wherein send message from different network interfaces and represent client respectively and send or the network traffic data that sends of server end.
11) according to actual time window network data message amount, determine whether that network data message needs structure transmission in addition, if it is proceed next network data message structure and transmission, modulation is to step 3.
12) judge whether that the network traffic data of next time window in addition needs to generate, if it is turn and jump to step 2; Otherwise task terminates.
Claims (5)
1. the network traffics generation method based on data flow characteristics, adopts single device constructing network data stream, is created on the network traffics that express network circuit transmits.It is characterized in that the method comprises the following steps:
1) load each time window network data flow characteristic attribute, comprising: in characteristic values such as the message amount distribution of the newly-increased network data flow quantity of each time window, network data flow continuous time and its distribution, all types of network data flow, message transfer time distribution and message size distributions;
2) in network traffics generative process, when each time window starts, newly set up the network data flow of respective numbers according to the newly-increased network data flow quantity of the actual time window of configuration, and determine according to network data flow continuous time and its distribution the time window that this stream continues;
3) according to the statistical information of actual time window network data flow, the network data stream information needing at this moment to send network data message is determined,
4) according to the network data stream information of current selection, transport layer protocol message information is determined;
5) according to the transport layer protocol state of network data flow, determine the data message type of present construction, then according to the distribution of sizes of data message, determine the size of network data message load;
6) the transport layer header message of constructing network data message;
7) according to the transport layer information construction data network layer header of network data flow;
8) according to data network network layers information, construction data link layer stem;
9) according to network message transmission time distribution characteristics, network data stream packet transmitting time is determined;
10) the network data stream packet of structure is sent to determines in the network of network interface;
11) according to actual time window network data message amount, determine whether that network data message needs structure transmission in addition, if it is proceed next network data message structure and transmission, modulation is to step 3;
12) judge whether that the network traffic data of next time window in addition needs to generate, if it is turn and jump to step 2; Otherwise task terminates.
2. a kind of network traffics generation method based on data flow characteristics according to claim 1, it is characterized in that: employing client and server different from the past carries out alternating transmission form and produces connection-oriented network traffics, but adopt single device constructing network data flow, the connection-oriented network traffic data in an independent direction can be produced, also can produce two-way connection-oriented network traffic data, wherein send message from different network interfaces and represent client respectively and send or the network traffic data that sends of server end.There is not the time delay situation that communicating pair causes alternately in the method simultaneously, therefore, it is possible to generation network traffic data more at a high speed.
3. a kind of network traffics generation method based on data flow characteristics according to claim 1, it is characterized in that: step 2) described in " according to network data flow continuous time and its distribution determine this stream continue time window ", refer to the time started of net control data flow and the end time of network data flow thus.
4. a kind of network traffics generation method based on data flow characteristics according to claim 1, it is characterized in that: step 5) described in " according to the transport layer protocol state of network data flow; determine the data message type of present construction ", refer to that the network data message generated at present is the handshaking information that connects of network data flow or containing loaded network data message.
5. a kind of network traffics generation method based on data flow characteristics according to claim 1, it is characterized in that: step 10) described in " the network data stream packet of structure is sent to and determines in the network of network interface ", refer to that the network data message of generation sends from client, or send from server end.
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| CN107864119A (en) * | 2017-09-04 | 2018-03-30 | 南京理工大学 | A kind of network traffics in Android platform obscure method and system |
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