CN103905269A - Network two-way detection method and system based on format recognition technology - Google Patents

Network two-way detection method and system based on format recognition technology Download PDF

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Publication number
CN103905269A
CN103905269A CN201310619430.7A CN201310619430A CN103905269A CN 103905269 A CN103905269 A CN 103905269A CN 201310619430 A CN201310619430 A CN 201310619430A CN 103905269 A CN103905269 A CN 103905269A
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network
file
packet
detection
data flow
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CN103905269B (en
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童志明
沈长伟
肖新光
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Shenzhen Antan Network Security Technology Co ltd
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Harbin Antiy Technology Co Ltd
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Abstract

The invention provides a network two-way detection method and system based on a format recognition technology. The method includes the steps that two-way network data flow is monitored, and a data package in the network data flow is captured and cached; whether the file format information of the data package is the same as the name suffix of a file which a corresponding URL points to is judged, if yes, a detection engine is used for detecting, if not, users are informed that high risk suffix disguise behaviors are discovered, and detailed depth detection is conducted. Meanwhile, the invention further provides the corresponding detection system. By the aid of the network two-way detection method and system based on the format recognition technology, the data flow with disguise behaviors can be detected according to the phenomenon that the file format disagrees with the URL format, threats are informed to the users, meanwhile, the detection environment is in a network, the network data transmission direction problem does not need to be taken into account, and two-way network data can be detected.

Description

Network bi-directional detection method and system based on format identification technology
Technical field
The present invention relates to computer network security technology field, relate in particular to a kind of network bi-directional detection method and system based on format identification technology.
Background technology
In legacy network data flow malicious code detection mode, existing many employings are first data cached, then the mode of carrying out malicious code detection.Legacy network data malicious code detects due to wrong report and detection speed, adopts unidirectional detection technique more, i.e. the data flow of Focus Control end to controlled terminal, and be indifferent to the data flow of controlled terminal to control end.Therefore unidirectional detection technique can more undetected not detection side in the process of Sampling network malicious code to malicious code.Meanwhile, first unidirectional detection technique needs to judge the transmission direction of network data flow in testing process, and the deterministic process of Network Traffic Data Flows direction is comparatively loaded down with trivial details, and therefore detection speed is lower.
Summary of the invention
The invention provides a kind of network bi-directional detection method and device based on format identification technology, solved and only one-way data has been detected to undetected problem in traditional detection method, also solved Network Traffic Data Flows direction and judged loaded down with trivial details problem simultaneously.
A network bi-directional detection method based on format identification technology, comprising:
Monitoring bidirectional network data flow;
Packet in crawl and buffer memory network data flow;
Whether the file format information that judges described packet is identical with the corresponding URL of institute file suffixes name pointed, if so, uses detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.
In described method, whether mutually the same with the corresponding URL of institute file suffixes name pointed in the file format information that judges described packet, also comprise:
Packet is carried out to file format identification, obtain file format information;
Obtain the corresponding URL of described packet file suffixes name pointed.
Choice for use of the present invention judges URL, is because URL is with suffix name, conventionally suffix name identification document actual format.The URL that there is no suffix name for some, it can be to extract information that the file of its download has suffix name from HTTP.Once therefore find that the file format obtaining and the actual format of the packet detecting are not inconsistent from URL, can there is camouflage, gain the behavior that user carries out or lets pass by cheating by specified data bag.
A network bi-directional detection system based on format identification technology, comprising:
Monitoring unit, for monitoring bidirectional network data flow;
Data extracting unit, for capturing and the packet of buffer memory network data flow;
Contrast module, whether identical with the corresponding URL of institute file suffixes name pointed for judging the file format information of described packet, if so, use detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.
In described system, also comprise:
Format identification unit, for packet is carried out to file format identification, obtains file format information;
URL suffix name recognition unit, for obtaining the corresponding URL of described packet file suffixes name pointed.
Advantage of the present invention is, use the packet in network data flow to judge, URL is judged to risk marries again to file object, such detection method, testing environment, in network, therefore without the problem of considering Internet Transmission direction, merges bi-directional data flow, avoid conventional method one-way data to detect undetected problem, also avoided the complicated processes of network data flow path direction judgement simultaneously.And utilize in URL with the feature of file format information, judge that whether the file format that URL identifies is consistent with the actual file format detecting, and then the file camouflage behavior of highly dangerous in discovering network transfer of data.
The invention provides a kind of network bi-directional detection method and system based on format identification technology, described method comprises: monitoring bidirectional network data flow, and packet in crawl and buffer memory network data flow; Whether the file format information that judges described packet is identical with the corresponding URL of institute file suffixes name pointed, if so, uses detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.The present invention simultaneously also provides corresponding detection system.By content of the present invention, can and be that form is not inconsistent according to file format, detect the data with camouflage behavior, and then inform that user threatens, because testing environment is in network, without the problem of considering network data transmission direction, can detect bilateral network data simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the network bi-directional detection method flow chart that the present invention is based on format identification technology;
Fig. 2 is the network bi-directional detection system structural representation that the present invention is based on format identification technology.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the embodiment of the present invention, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, technical scheme in the present invention is described in further detail.
The invention provides a kind of network bi-directional detection method and device based on format identification technology, solved and only one-way data has been detected to undetected problem in traditional detection method, also solved Network Traffic Data Flows direction and judged loaded down with trivial details problem simultaneously.
The invention provides a kind of network bi-directional detection method based on format identification technology, as shown in Figure 1, provide an embodiment of the inventive method:
S101: monitoring bidirectional network data flow;
S102: the packet in crawl and buffer memory network data flow;
S103: packet is carried out to file format identification, obtain file format information;
S104: obtain the corresponding URL of described packet file suffixes name pointed;
S105: whether the file format information that judges described packet is identical with the corresponding URL of institute file suffixes name pointed, if so, uses detection engine to detect; Otherwise documentation risk rank is set to height, carry out detailed depth detection, notify user to find high-risk suffix camouflage behavior.
Choice for use of the present invention judges URL, is because URL is with suffix name, conventionally suffix name identification document actual format.The URL that there is no suffix name for some, it can be to extract information that the file of its download has suffix name from HTTP.Once therefore find that the file format obtaining and the actual format of the packet detecting are not inconsistent from URL, can there is camouflage, gain the behavior that user carries out or lets pass by cheating by specified data bag.
The present invention also provides a kind of network bi-directional detection system based on format identification technology, as shown in Figure 2, comprising:
Monitoring unit 201, for monitoring bidirectional network data flow;
Data extracting unit 202, for capturing and the packet of buffer memory network data flow;
Contrast module 203, whether identical with the corresponding URL of institute file suffixes name pointed for judging the file format information of described packet, if so, use detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.
In described system, also comprise:
Format identification unit 204, for packet is carried out to file format identification, obtains file format information;
URL suffix name recognition unit 205, for obtaining the corresponding URL of described packet file suffixes name pointed.
Advantage of the present invention is, use the packet in network data flow to judge, URL is judged to risk marries again to file object, such detection method, testing environment, in network, therefore without the problem of considering Internet Transmission direction, merges bi-directional data flow, avoid conventional method one-way data to detect undetected problem, also avoided the complicated processes of network data flow path direction judgement simultaneously.And utilize in URL with the feature of file format information, judge that whether the file format that URL identifies is consistent with the actual file format detecting, and then the file camouflage behavior of highly dangerous in discovering network transfer of data.
The invention provides a kind of network bi-directional detection method and system based on format identification technology, described method comprises: monitoring bidirectional network data flow, and packet in crawl and buffer memory network data flow; Whether the file format information that judges described packet is identical with the corresponding URL of institute file suffixes name pointed, if so, uses detection engine to carry out depth detection; Otherwise notify user to find high-risk suffix camouflage behavior.The present invention simultaneously also provides corresponding detection system.By content of the present invention, can and be that form is not inconsistent according to file format, detect the data with camouflage behavior, and then inform that user threatens, because testing environment is in network, without the problem of considering network data transmission direction, can detect bilateral network data simultaneously.
Although described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not depart from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not depart from spirit of the present invention.

Claims (4)

1. the network bi-directional detection method based on format identification technology, is characterized in that, comprising:
Monitoring bidirectional network data flow;
Packet in crawl and buffer memory network data flow;
Whether the file format information that judges described packet is identical with the corresponding URL of institute file suffixes name pointed, if so, uses detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.
2. whether the method for claim 1, is characterized in that, mutually the same with the corresponding URL of institute file suffixes name pointed in the file format information that judges described packet, also comprises:
Packet is carried out to file format identification, obtain file format information;
Obtain the corresponding URL of described packet file suffixes name pointed.
3. the network bi-directional detection system based on format identification technology, is characterized in that, comprising:
Monitoring unit, for monitoring bidirectional network data flow;
Data extracting unit, for capturing and the packet of buffer memory network data flow;
Contrast module, whether identical with the corresponding URL of institute file suffixes name pointed for judging the file format information of described packet, if so, use detection engine to detect; Otherwise documentation risk rank is set to height, carries out detailed depth detection, and notify user to find high-risk suffix camouflage behavior.
4. system as claimed in claim 4, is characterized in that, also comprises:
Format identification unit, for packet is carried out to file format identification, obtains file format information;
URL suffix name recognition unit, for obtaining the corresponding URL of described packet file suffixes name pointed.
CN201310619430.7A 2013-11-29 2013-11-29 Network bi-directional detection method and system based on format identification technology Active CN103905269B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN105740704A (en) * 2015-12-25 2016-07-06 哈尔滨安天科技股份有限公司 User scanning frequency-based detection method and system for dynamically adjusting detection degree
CN106888221A (en) * 2017-04-15 2017-06-23 北京科罗菲特科技有限公司 A kind of Secure Information Tanslation Through Netware method

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CN102446253A (en) * 2011-12-23 2012-05-09 北京奇虎科技有限公司 Webpage trojan detection method and system
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Publication number Priority date Publication date Assignee Title
CN105740704A (en) * 2015-12-25 2016-07-06 哈尔滨安天科技股份有限公司 User scanning frequency-based detection method and system for dynamically adjusting detection degree
CN105740704B (en) * 2015-12-25 2019-07-02 哈尔滨安天科技股份有限公司 Detection method and system based on scanning input frequency dynamic adjustment inspecting force
CN106888221A (en) * 2017-04-15 2017-06-23 北京科罗菲特科技有限公司 A kind of Secure Information Tanslation Through Netware method

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