CN110113332A - A kind of detection industry control agreement whether there is the method and device of exception - Google Patents
A kind of detection industry control agreement whether there is the method and device of exception Download PDFInfo
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- CN110113332A CN110113332A CN201910362413.7A CN201910362413A CN110113332A CN 110113332 A CN110113332 A CN 110113332A CN 201910362413 A CN201910362413 A CN 201910362413A CN 110113332 A CN110113332 A CN 110113332A
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- control agreement
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
- H04L63/1425—Traffic logging, e.g. anomaly detection
Abstract
The embodiment of the present invention provides a kind of detection industry control agreement with the presence or absence of abnormal method and device, which comprises obtains the communication message of industry control agreement；The communication message is the multiple communication messages for having identical message length and reaching preset quantity；Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining the variable aiming field of sequence content；Determine the corresponding classification type of all aiming fields, carry out semantic deduction respectively to every class aiming field, every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme；Wherein, the classification type is divided based on message format, and the default abnormality detection rule includes default semantic constraint relationship corresponding with default classification type.Described device executes the above method.Method and device provided in an embodiment of the present invention can comprehensively detect industry control agreement with the presence or absence of abnormal.
Description
Technical field
The present invention relates to industry control network security technology areas more particularly to a kind of detection industry control agreement with the presence or absence of exception
Method and device.
Background technique
With the development of industry control technology, high-risk security risk easily occurs for industry control network, therefore, to these high-risk safety winds
Danger, which carries out identification, to be particularly important.
The prior art carries out the identification of high-risk security risk generally directed to industry control environment or industry control agreement, for industry control ring
Border is normally based on the application scenarios of industry control industry to realize, such as has corresponding high-risk security risk for petrochemical industry
Recognition methods, since the recognition methods and petrochemical industry application scenarios are closely related, therefore, it is impossible to apply this method to it
The application scenarios of his industry control industry have biggish application limitation, special by extracting industry control behavior for industry control agreement
Sign, so that detected rule is generated, for example, for Modbus request message, it is necessary to have response message, still, the detection method without
Method is comprehensive, is accurately detected potential industry control network security risk.
Therefore, how drawbacks described above is avoided, accurately, efficiently, comprehensively detection industry control agreement is with the presence or absence of exception, in turn,
Industry control network security risk is determined whether there is, becoming need solve the problems, such as.
Summary of the invention
In view of the problems of the existing technology, the embodiment of the present invention provides a kind of detection industry control agreement with the presence or absence of abnormal
Method and device.
The embodiment of the present invention provides a kind of detection industry control agreement with the presence or absence of abnormal method, comprising:
Obtain the communication message of industry control agreement；The communication message is that have identical message length and reach preset quantity
Multiple communication messages；
Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining what sequence content can be changed
Aiming field；
It determines the corresponding classification type of all aiming fields, carries out semantic deduction respectively to every class aiming field, it will
Every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control according to semanteme
Agreement is with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, the default abnormality detection rule
It then include default semantic constraint relationship corresponding with default classification type.
The embodiment of the present invention provides a kind of detection industry control agreement with the presence or absence of abnormal device, comprising:
Acquiring unit, for obtaining the communication message of industry control agreement；The communication message be have identical message length and
Reach multiple communication messages of preset quantity；
Comparison unit, for carrying out Multiple Sequence Alignment to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining sequence
The aiming field of column content-variable；
Detection unit, for determining the corresponding classification type of all aiming fields, to every class aiming field respectively into
Row is semantic to infer, every class semanteme inferred results is compared with default abnormality detection rule, and inferred according to semanteme and compare knot
Fruit determines the industry control agreement with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, described
Default abnormality detection rule includes default semantic constraint relationship corresponding with default classification type.
The embodiment of the present invention provides a kind of electronic equipment, comprising: memory, processor and storage are on a memory and can be
The computer program run on processor, wherein
The processor realizes following method and step when executing described program:
Obtain the communication message of industry control agreement；The communication message is that have identical message length and reach preset quantity
Multiple communication messages；
Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining what sequence content can be changed
Aiming field；
It determines the corresponding classification type of all aiming fields, carries out semantic deduction respectively to every class aiming field, it will
Every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control according to semanteme
Agreement is with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, the default abnormality detection rule
It then include default semantic constraint relationship corresponding with default classification type.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, is stored thereon with computer program, should
Following method and step is realized when computer program is executed by processor:
Obtain the communication message of industry control agreement；The communication message is that have identical message length and reach preset quantity
Multiple communication messages；
Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining what sequence content can be changed
Aiming field；
It determines the corresponding classification type of all aiming fields, carries out semantic deduction respectively to every class aiming field, it will
Every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control according to semanteme
Agreement is with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, the default abnormality detection rule
It then include default semantic constraint relationship corresponding with default classification type.
Detection industry control agreement provided in an embodiment of the present invention passes through Multiple Sequence Alignment with the presence or absence of abnormal method and device
All communication messages to obtain the variable aiming field of sequence content, then are based on message format and divide all aiming fields
Class, then will be compared for the semantic inferred results of every class aiming field with default abnormality detection rule, so as to accurately,
Efficiently, comprehensively detection industry control agreement is with the presence or absence of exception, in turn, it is determined whether there are industry control network security risks.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is present invention detection industry control agreement with the presence or absence of abnormal embodiment of the method flow chart；
Fig. 2 is the message fragment schematic diagram obtained using MSA algorithm；
Fig. 3 is present invention detection industry control agreement with the presence or absence of abnormal Installation practice structural schematic diagram；
Fig. 4 is electronic equipment entity structure schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is present invention detection industry control agreement with the presence or absence of abnormal embodiment of the method flow chart, as shown in Figure 1, this hair
A kind of detection industry control agreement that bright embodiment provides is with the presence or absence of abnormal method, comprising the following steps:
S101: the communication message of industry control agreement is obtained；The communication message is that have identical message length and reach default
Multiple communication messages of quantity.
Specifically, device obtains the communication message of industry control agreement；The communication message is that have identical message length and reach
To multiple communication messages of preset quantity.Multiple communication messages in preset period of time can be obtained, preset period of time can basis
Actual conditions are independently arranged, and are chosen as 1 day.Communication message may include request message, the response message for the request message,
The step can be realized by following concrete mode:
It is serviced according to provided by different industrial control equipments, industry control network flow is grouped；Secondly, in every group of industry control
In network flow, by taking request message as an example, further grouping is made to the request message of identical message length；Finally, when certain group
When message reaches preset quantity, using these messages as above-mentioned multiple communication messages.
S102: carrying out Multiple Sequence Alignment to all communication messages, and according to Multiple Sequence Alignment as a result, acquisition sequence content can
The aiming field of change.
Specifically, device carries out Multiple Sequence Alignment to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining sequence
The aiming field of content-variable.Multiple Sequence Alignment can be carried out to all communication messages using MSA algorithm.Multiple sequence alignments
(Multiple sequence alignment, abbreviation MSA).Fig. 2 is the message fragment schematic diagram obtained using MSA algorithm, such as
Shown in Fig. 2, Multiple Sequence Alignment is carried out to the identical message of multiple message lengths.Specifically, MSA algorithm is by original message Pi(1
≤ i≤m) same segment being alternately present is divided into (in different message PiThe identical byte sequence of middle content) and different segmentations
(in different message PiThe different byte sequence of middle content), and each PiIn include division number it is identical, be all n segmentation.
Referring to table 1, the content of each message fragment in each sequence corresponding diagram 2 in table 1, such as the S in 8c corresponding diagram 21,2；Sequence
The aiming field of column content-variable is the corresponding field of secondary series, the 4th column, the 6th column in table 1.
Table 1
| 0300001f02f0803201000028 | 8c | 000e00000401120a100200 | 04 | 0000 | 83 | 000000 |
| 0300001f02f0803201000028 | 8d | 000e00000401120a100200 | 01 | 0000 | 81 | 000000 |
| 0300001f02f0803201000028 | 8e | 000e00000401120a100200 | 01 | 0000 | 82 | 000000 |
| 0300001f02f0803201000028 | 8f | 000e00000401120a100200 | 04 | 0000 | 83 | 000000 |
S103: determining the corresponding classification type of all aiming fields, carries out semanteme respectively to every class aiming field and pushes away
It is disconnected, every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines institute according to semanteme
Industry control agreement is stated with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, the default exception
Detected rule includes default semantic constraint relationship corresponding with default classification type.
Specifically, device determines the corresponding classification type of all aiming fields, every class aiming field is carried out respectively
Semanteme is inferred, every class semanteme inferred results are compared with default abnormality detection rule, and infers comparison result according to semanteme
Determine the industry control agreement with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, described pre-
If abnormality detection rule includes default semantic constraint relationship corresponding with default classification type.It is in Baidupedia that semanteme, which is inferred,
Semantic reasoning, specific semantic reasoning method can be heuristic inference method, be not especially limited.Classification type can wrap
Function code field, counter field, session negotiation field, numeric field within the scope of fixed numbers etc. are included, referring to table 1, second
Arrange corresponding counter field, the 4th column and the 6th arrange the numeric field respectively corresponded within the scope of fixed numbers, wherein function code word
Section is for example: programming software or the configuration software operation different from controller (such as PLC) progress, for example, write variable, reading variable, on
The corresponding code of the operation such as biography, downloading, starting, stopping, diagnosis, pressure, corresponding default semantic constraint relationship is specified
The byte value of position byte is different and byte value is default value, the default value be denoted as write variable, read variable, upload,
It downloads, start, stopping, diagnosing, forcing corresponding byte value, the corresponding semanteme for meeting default semantic constraint relationship pushes away
Disconnected result may be that the byte value of above-mentioned designated position byte is different and byte value is default value, not meet default
The semantic inferred results of semantic constraint relationship can be that designated position byte is the same byte value always, or including except upper
State other numerical value etc. other than 8 byte values.I.e. if there is not meeting default semantic constraint corresponding with function code field
The semantic inferred results of relationship can directly determine industry control agreement and there is exception.
Counter field such as S7COMM agreement, programming configuration instrument (client) are sent to the data of PLC (server)
Multiple messages that frame length is 87.Data are incremental, and (these data frames are respectively 01 00,02 00,03 00,04 00,05
It 00 ...), is counter field, referring to the example above, 8c~8f is also possible to counter field, corresponding default semantic constraint
Relationship is that the byte value of designated position byte is incremented by successively, the corresponding semantic inferred results for meeting default semantic constraint relationship
Or the byte value of designated position byte is incremented by；The corresponding semantic inferred results for not meeting default semantic constraint relationship
It can successively decrease for the byte value presence of designated position byte or numerical value has jump etc..I.e. if there is not meeting and count
The semantic inferred results of the corresponding default semantic constraint relationship of number device field can directly determine industry control agreement and there is exception.
Session negotiation field: in different TCP connections, the field of same position is different from every time, and same position
Field remained unchanged in fixed TCP connection, can be speculated as this field is session negotiation field, and the purpose of session is
Different TCP connections is distinguished, corresponding default semantic constraint relationship is the word of designated position byte in different TCP connections
Section value is different from every time, and in fixed TCP connection, the byte value of designated position byte remains unchanged every time,
The corresponding semantic inferred results for meeting default semantic constraint relationship may be above content, corresponding not meet default semanteme
The semantic inferred results of the constraint relationship can be in different TCP connections, there are numerical value phases for the byte value of designated position byte
Same number, or in fixed TCP connection, the byte value of the designated position byte number etc. different there are numerical value.I.e.
If there is the semantic inferred results for not meeting default semantic constraint relationship corresponding with session negotiation field, work can be directly determined
It controls agreement and there is exception.
Numeric field within the scope of fixed numbers: referring to the example above, providing according to agreement, Length and Area the two
Field is all the numeric field within the scope of fixed numbers, the i.e. value of Length and the value of Area all in fixed numbers range
Interior, corresponding default semantic constraint relationship is the byte value of designated position byte within the scope of fixed numbers, corresponding to meet
The semantic inferred results of default semantic constraint relationship may be above content；It is corresponding not meet default semantic constraint relationship
Semantic inferred results can be the byte value of designated position byte not within the scope of fixed numbers.I.e. if there is do not meet with
The semantic inferred results of the corresponding default semantic constraint relationship of numeric field within the scope of fixed numbers can directly determine industry control association
View exists abnormal.
It should be understood that passing through above-mentioned and function code field, counter field, session negotiation field, fixed numbers model
The corresponding default semantic constraint relationship of numeric field in enclosing, which is all not detected to exist, does not meet all default semantemes about
The semantic inferred results of beam relationship, then can determining industry control agreement, there is no exceptions, and determining industry control agreement, there is no exceptions
It afterwards, can be further via manually being confirmed.
Default abnormality detection rule can be white list rule common in industrial control field.The form of rule can refer to,
But the rule for the abnormality detections engine such as be not limited to snort, bro, suricata.Newly-increased sequence of message can also be carried out
Feedback validation, and default abnormality detection rule is updated according to feedback validation result, it, can before updating default abnormality detection rule
With further via manually being confirmed, to further increase the accuracy of detection.
When detecting that industry control agreement deposits when abnormal, warning information can also be generated.
Detection industry control agreement provided in an embodiment of the present invention is all logical by Multiple Sequence Alignment with the presence or absence of abnormal method
Believe message, to obtain the variable aiming field of sequence content, then is based on message format and classifies to all aiming fields, then will
It is compared for the semantic inferred results of every class aiming field with default abnormality detection rule, so as to accurate, efficient, complete
Detect to face industry control agreement with the presence or absence of exception, in turn, it is determined whether there are industry control network security risks.
On the basis of the above embodiments, the classification type includes function code field, corresponding default semantic constraint pass
System is that the byte value of designated position byte is different and byte value is default value；Correspondingly, described infer every class semanteme
As a result it is compared with default abnormality detection rule, and infers that comparison result determines that the industry control agreement whether there is according to semanteme
It is abnormal, comprising:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with function code field,
Industry control agreement can then be directly determined and there is exception.
Specifically, if device judgement is known in the presence of the language for not meeting default semantic constraint relationship corresponding with function code field
Adopted inferred results can then directly determine industry control agreement and there is exception.It can refer to above description, repeat no more.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by function code field with the presence or absence of abnormal method
Default semantic constraint relationship, is further able to that accurate, efficient, comprehensively detection industry control agreement in turn, is determined with the presence or absence of abnormal
With the presence or absence of industry control network security risk.
On the basis of the above embodiments, the classification type includes counter field, corresponding default semantic constraint pass
System is that the byte value of designated position byte is incremented by successively；Correspondingly, described by every class semanteme inferred results and default exception inspection
Gauge is then compared, and infers that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme, comprising:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with counter field,
Industry control agreement can be directly determined and there is exception.
Specifically, if device judgement is known in the presence of the language for not meeting default semantic constraint relationship corresponding with counter field
Adopted inferred results can directly determine industry control agreement and there is exception.It can refer to above description, repeat no more.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by counter field with the presence or absence of abnormal method
Default semantic constraint relationship, is further able to that accurate, efficient, comprehensively detection industry control agreement in turn, is determined with the presence or absence of abnormal
With the presence or absence of industry control network security risk.
On the basis of the above embodiments, the classification type includes session negotiation field, corresponding default semantic constraint
Relationship is in different TCP connections, and the byte value of designated position byte is different from every time, and in fixed TCP connection
In, the byte value of designated position byte remains unchanged every time；Correspondingly, it is described by every class semanteme inferred results with preset it is different
Normal detected rule is compared, and infers that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme, comprising:
If judgement is known in the presence of the semantic deduction knot for not meeting default semantic constraint relationship corresponding with session negotiation field
Fruit can directly determine industry control agreement and there is exception.
Specifically, if device judgement, which is known to exist, does not meet default semantic constraint relationship corresponding with session negotiation field
Semantic inferred results can directly determine industry control agreement and there is exception.It can refer to above description, repeat no more.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by session negotiation field with the presence or absence of abnormal method
Default semantic constraint relationship, be further able to that accurate, efficient, comprehensively detection industry control agreement is with the presence or absence of abnormal, in turn, really
Surely it whether there is industry control network security risk.
On the basis of the above embodiments, the classification type include numeric field within the scope of fixed numbers, it is corresponding
Default semantic constraint relationship is the byte value of designated position byte within the scope of fixed numbers；Correspondingly, described by every class language
Adopted inferred results are compared with default abnormality detection rule, and infer that comparison result determines that the industry control agreement is according to semanteme
It is no to there is exception, comprising:
If judgement, which is known to exist, does not meet default semantic constraint relationship corresponding with the numeric field within the scope of fixed numbers
Semantic inferred results, can directly determine industry control agreement exist it is abnormal.
Specifically, if device judgement, which is known to exist, does not meet default language corresponding with the numeric field within the scope of fixed numbers
The semantic inferred results of adopted the constraint relationship can directly determine industry control agreement and there is exception.It can refer to above description, repeat no more.
Detection industry control agreement provided in an embodiment of the present invention is with the presence or absence of abnormal method, by within the scope of fixed numbers
The corresponding default semantic constraint relationship of numeric field, be further able to it is accurate, efficient, comprehensively detection industry control agreement whether there is
It is abnormal, in turn, it is determined whether there are industry control network security risks.
On the basis of the above embodiments, the default abnormality detection rule further includes and predetermined sequence off-note；Phase
It answers, the method also includes:
Identify the sequence signature of all communication messages, at least one sequence signature and the predetermined sequence are abnormal if detecting
Feature is corresponding, it is determined that the industry control agreement exists abnormal.
Specifically, device identifies the sequence signature of all communication messages, if detect at least one sequence signature with it is described
Predetermined sequence off-note is corresponding, it is determined that the industry control agreement exists abnormal.Predetermined sequence off-note may include sequence
The length of column is abnormal, sequence place communication message sending cycle interval is abnormal etc., is not especially limited.
Detection industry control agreement provided in an embodiment of the present invention is extremely special by predetermined sequence with the presence or absence of abnormal method
It levies, further accurate, efficiently, comprehensively can detect industry control agreement with the presence or absence of exception, in turn, it is determined whether there are industry controls
Network security risk.
On the basis of the above embodiments, described pair of all communication messages carry out Multiple Sequence Alignment, comprising:
Multiple Sequence Alignment is carried out to all communication messages using Multiple sequence alignments MSA algorithm.
Specifically, device carries out Multiple Sequence Alignment to all communication messages using Multiple sequence alignments MSA algorithm.It can refer to
Above description repeats no more.
Detection industry control agreement provided in an embodiment of the present invention is with the presence or absence of abnormal method, by using MSA algorithm to institute
There is communication message to carry out Multiple Sequence Alignment, is further ensured that the technical solution can be realized efficiently.
Fig. 3 is present invention detection industry control agreement with the presence or absence of abnormal Installation practice structural schematic diagram, as shown in figure 3,
The embodiment of the invention provides a kind of detection industry control agreements with the presence or absence of abnormal device, including acquiring unit 301, comparison unit
302 and detection unit 303, in which:
Acquiring unit 301 is used to obtain the communication message of industry control agreement；The communication message be have identical message length,
And reach multiple communication messages of preset quantity；Comparison unit 302 is used to carry out all communication messages Multiple Sequence Alignment, and root
According to Multiple Sequence Alignment as a result, obtaining the variable aiming field of sequence content；Detection unit 303 is for determining all aiming fields point
Not corresponding classification type carries out semantic deduction to every class aiming field respectively, by every class semanteme inferred results and default exception
Detected rule is compared, and infers that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme；Wherein, described
Classification type is divided based on message format, and the default abnormality detection rule includes corresponding with default classification type
Default semantic constraint relationship.
Specifically, acquiring unit 301 is used to obtain the communication message of industry control agreement；The communication message is that have identical report
Literary length and the multiple communication messages for reaching preset quantity；Comparison unit 302 is used to carry out multisequencing ratio to all communication messages
It is right, and according to Multiple Sequence Alignment as a result, obtaining the variable aiming field of sequence content；Detection unit 303 is for determining all mesh
The corresponding classification type of marking-up section carries out semantic deduction to every class aiming field respectively, by every class semanteme inferred results with
Default abnormality detection rule is compared, and infers that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme；
Wherein, the classification type is divided based on message format, and the default abnormality detection rule includes and default classification
The corresponding default semantic constraint relationship of type.
Detection industry control agreement provided in an embodiment of the present invention is all logical by Multiple Sequence Alignment with the presence or absence of abnormal device
Believe message, to obtain the variable aiming field of sequence content, then is based on message format and classifies to all aiming fields, then will
It is compared for the semantic inferred results of every class aiming field with default abnormality detection rule, so as to accurate, efficient, complete
Detect to face industry control agreement with the presence or absence of exception, in turn, it is determined whether there are industry control network security risks.
On the basis of the above embodiments, the classification type includes function code field, corresponding default semantic constraint pass
System is that the byte value of designated position byte is different and byte value is default value；Correspondingly, the detection unit 303 has
Body is used for:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with function code field,
Industry control agreement can then be directly determined and there is exception.
Specifically, the detection unit 303 is specifically used for: if judging to know corresponding with function code field in the presence of not meeting
The semantic inferred results of default semantic constraint relationship can then directly determine industry control agreement and there is exception.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by function code field with the presence or absence of abnormal device
Default semantic constraint relationship, is further able to that accurate, efficient, comprehensively detection industry control agreement in turn, is determined with the presence or absence of abnormal
With the presence or absence of industry control network security risk.
On the basis of the above embodiments, the classification type further includes counter field, corresponding default semantic constraint
Relationship is that the byte value of designated position byte is incremented by successively；Correspondingly, the detection unit 303 is specifically used for:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with counter field,
Industry control agreement can be directly determined and there is exception.
Specifically, the detection unit 303 is specifically used for: if judging to know corresponding with counter field in the presence of not meeting
The semantic inferred results of default semantic constraint relationship can directly determine industry control agreement and there is exception.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by counter field with the presence or absence of abnormal device
Default semantic constraint relationship, is further able to that accurate, efficient, comprehensively detection industry control agreement in turn, is determined with the presence or absence of abnormal
With the presence or absence of industry control network security risk.
On the basis of the above embodiments, the classification type further include session negotiation field, it is corresponding it is default it is semantic about
Beam relationship is in different TCP connections, and the byte value of designated position byte is different from every time, and is connected in fixed TCP
In connecing, the byte value of designated position byte remains unchanged every time；Correspondingly, the detection unit 303 is specifically used for:
If judgement is known in the presence of the semantic deduction knot for not meeting default semantic constraint relationship corresponding with session negotiation field
Fruit can directly determine industry control agreement and there is exception.
Specifically, the detection unit 303 is specifically used for: if judging to know corresponding with session negotiation field in the presence of not meeting
Default semantic constraint relationship semantic inferred results, can directly determine industry control agreement exist it is abnormal.
Detection industry control agreement provided in an embodiment of the present invention is corresponding by session negotiation field with the presence or absence of abnormal device
Default semantic constraint relationship, be further able to that accurate, efficient, comprehensively detection industry control agreement is with the presence or absence of abnormal, in turn, really
Surely it whether there is industry control network security risk.
On the basis of the above embodiments, the classification type further includes numeric field within the scope of fixed numbers, correspondence
Default semantic constraint relationship be designated position byte byte value within the scope of fixed numbers；Correspondingly, the detection is single
Member 303 is specifically used for:
If judgement, which is known to exist, does not meet default semantic constraint relationship corresponding with the numeric field within the scope of fixed numbers
Semantic inferred results, can directly determine industry control agreement exist it is abnormal.
Specifically, the detection unit 303 is specifically used for: if judgement know in the presence of do not meet within the scope of fixed numbers
The semantic inferred results of the corresponding default semantic constraint relationship of numeric field can directly determine industry control agreement and there is exception.
Detection industry control agreement provided in an embodiment of the present invention is with the presence or absence of abnormal device, by within the scope of fixed numbers
The corresponding default semantic constraint relationship of numeric field, be further able to it is accurate, efficient, comprehensively detection industry control agreement whether there is
It is abnormal, in turn, it is determined whether there are industry control network security risks.
On the basis of the above embodiments, the default abnormality detection rule further includes and predetermined sequence off-note；Phase
It answers, described device is also used to:
Identify the sequence signature of all communication messages, at least one sequence signature and the predetermined sequence are abnormal if detecting
Feature is corresponding, it is determined that the industry control agreement exists abnormal.
Specifically, described device is also used to: the sequence signature of all communication messages is identified, if detecting at least one sequence
Feature is corresponding with the predetermined sequence off-note, it is determined that the industry control agreement exists abnormal.
Detection industry control agreement provided in an embodiment of the present invention is extremely special by predetermined sequence with the presence or absence of abnormal device
It levies, further accurate, efficiently, comprehensively can detect industry control agreement with the presence or absence of exception, in turn, it is determined whether there are industry controls
Network security risk.
On the basis of the above embodiments, the comparison unit 302 is specifically used for:
Multiple Sequence Alignment is carried out to all communication messages using Multiple sequence alignments MSA algorithm.
Specifically, the comparison unit 302 is specifically used for: using Multiple sequence alignments MSA algorithm to all communication messages
Carry out Multiple Sequence Alignment.
Detection industry control agreement provided in an embodiment of the present invention is with the presence or absence of abnormal device, by using MSA algorithm to institute
There is communication message to carry out Multiple Sequence Alignment, is further ensured that the technical solution can be realized efficiently.
Detection industry control agreement provided in an embodiment of the present invention specifically can be used for executing above-mentioned with the presence or absence of abnormal device
The process flow of each method embodiment, details are not described herein for function, is referred to the detailed description of above method embodiment.
Fig. 4 is electronic equipment entity structure schematic diagram provided in an embodiment of the present invention, as shown in figure 4, the electronic equipment
It include: processor (processor) 401, memory (memory) 402 and bus 403；
Wherein, the processor 401, memory 402 complete mutual communication by bus 403；
The processor 401 is used to call the program instruction in the memory 402, to execute above-mentioned each method embodiment
Provided method, for example, obtain the communication message of industry control agreement；The communication message be have identical message length,
And reach multiple communication messages of preset quantity；Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment knot
Fruit obtains the variable aiming field of sequence content；Every class semanteme inferred results are compared with default abnormality detection rule, and
Infer that comparison result determines the industry control agreement with the presence or absence of abnormal determining corresponding point of all aiming fields according to semanteme
Class Type carries out semantic deduction to every class aiming field respectively, by every class semanteme inferred results and default abnormality detection rule into
Row compares, and infers that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme；Wherein, the classification type is
Divided based on message format, the default abnormality detection rule include it is corresponding with default classification type it is default it is semantic about
Beam relationship.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, obtains the logical of industry control agreement
Believe message；The communication message is the multiple communication messages for having identical message length and reaching preset quantity；To all communications
Message carries out Multiple Sequence Alignment, and according to Multiple Sequence Alignment as a result, obtaining the variable aiming field of sequence content；Every class is semantic
Inferred results are compared with default abnormality detection rule, and infer whether comparison result determines the industry control agreement according to semanteme
In the presence of the corresponding classification type of extremely determining all aiming fields, semantic deduction is carried out respectively to every class aiming field, it will
Every class semanteme inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control according to semanteme
Agreement is with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, the default abnormality detection rule
It then include default semantic constraint relationship corresponding with default classification type.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
It such as include: the communication message for obtaining industry control agreement；The communication message has identical message length and reaches preset quantity
Multiple communication messages；Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, acquisition sequence content can
The aiming field of change；Every class semanteme inferred results are compared with default abnormality detection rule, and is inferred according to semanteme and is compared
As a result the industry control agreement is determined with the presence or absence of the corresponding classification type of extremely determining all aiming fields, to every class target
Field carries out semantic deduction respectively, every class semanteme inferred results is compared with default abnormality detection rule, and according to semanteme
Infer that comparison result determines the industry control agreement with the presence or absence of abnormal；Wherein, the classification type is carried out based on message format
It divides, the default abnormality detection rule includes default semantic constraint relationship corresponding with default classification type.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (16)
1. a kind of detection industry control agreement is with the presence or absence of abnormal method characterized by comprising
Obtain the communication message of industry control agreement；The communication message is that have identical message length and reach the more of preset quantity
A communication message；
Multiple Sequence Alignment is carried out to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining the variable target of sequence content
Field；
It determines the corresponding classification type of all aiming fields, semantic deduction is carried out respectively to every class aiming field, by every class
Semantic inferred results are compared with default abnormality detection rule, and infer that comparison result determines the industry control agreement according to semanteme
With the presence or absence of exception；Wherein, the classification type is divided based on message format, the default abnormality detection rule packet
Include default semantic constraint relationship corresponding with default classification type.
2. detection industry control agreement according to claim 1 is with the presence or absence of abnormal method, which is characterized in that the classification class
The byte value difference and byte number that type includes function code field, corresponding default semantic constraint relationship is designated position byte
Value is default value；Correspondingly, described every class semanteme inferred results are compared with default abnormality detection rule, and according to language
Justice infers that comparison result determines the industry control agreement with the presence or absence of abnormal, comprising:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with function code field, can
It directly determines industry control agreement and there is exception.
3. detection industry control agreement according to claim 2 is with the presence or absence of abnormal method, which is characterized in that the classification class
The byte value that type further includes counter field, corresponding default semantic constraint relationship is designated position byte is incremented by successively；Phase
It answers, it is described that every class semanteme inferred results are compared with default abnormality detection rule, and comparison result is inferred according to semanteme
Determine the industry control agreement with the presence or absence of abnormal, comprising:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with counter field, can be straight
It connects determining industry control agreement and there is exception.
4. detection industry control agreement according to claim 3 is with the presence or absence of abnormal method, which is characterized in that the classification class
Type further include session negotiation field, corresponding default semantic constraint relationship be in different TCP connections, designated position byte
Byte value is different from every time, and in fixed TCP connection, the byte value of designated position byte is kept not every time
Become；Correspondingly, described every class semanteme inferred results are compared with default abnormality detection rule, and are inferred according to semanteme and compared
As a result determine the industry control agreement with the presence or absence of abnormal, comprising:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with session negotiation field, can
It directly determines industry control agreement and there is exception.
5. detection industry control agreement according to claim 4 is with the presence or absence of abnormal method, which is characterized in that the classification class
Type further includes numeric field within the scope of fixed numbers, the byte number that corresponding default semantic constraint relationship is designated position byte
Value is within the scope of fixed numbers；It is correspondingly, described that every class semanteme inferred results are compared with default abnormality detection rule, and
Infer that comparison result determines the industry control agreement with the presence or absence of abnormal according to semanteme, comprising:
If judgement is known in the presence of the language for not meeting default semantic constraint relationship corresponding with the numeric field within the scope of fixed numbers
Adopted inferred results can directly determine industry control agreement and there is exception.
6. detection industry control agreement according to any one of claims 1 to 5 is with the presence or absence of abnormal method, which is characterized in that institute
Stating default abnormality detection rule further includes and predetermined sequence off-note；Correspondingly, the method also includes:
The sequence signature of all communication messages is identified, if detecting at least one sequence signature and the predetermined sequence off-note
It is corresponding, it is determined that the industry control agreement exists abnormal.
7. detection industry control agreement according to any one of claims 1 to 5 is with the presence or absence of abnormal method, which is characterized in that institute
It states and Multiple Sequence Alignment is carried out to all communication messages, comprising:
Multiple Sequence Alignment is carried out to all communication messages using Multiple sequence alignments MSA algorithm.
8. a kind of detection industry control agreement is with the presence or absence of abnormal device characterized by comprising
Acquiring unit, for obtaining the communication message of industry control agreement；The communication message is that have identical message length and reach
Multiple communication messages of preset quantity；
Comparison unit, for carrying out Multiple Sequence Alignment to all communication messages, and according to Multiple Sequence Alignment as a result, obtaining in sequence
Hold variable aiming field；
Detection unit carries out language to every class aiming field for determining the corresponding classification type of all aiming fields respectively
Justice is inferred, every class semanteme inferred results are compared with default abnormality detection rule, and infers that comparison result is true according to semanteme
The fixed industry control agreement is with the presence or absence of abnormal；Wherein, the classification type is divided based on message format, described default
Abnormality detection rule includes default semantic constraint relationship corresponding with default classification type.
9. detection industry control agreement according to claim 8 is with the presence or absence of abnormal device, which is characterized in that the classification class
The byte value difference and byte number that type includes function code field, corresponding default semantic constraint relationship is designated position byte
Value is default value；Correspondingly, the detection unit is specifically used for:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with function code field, can
It directly determines industry control agreement and there is exception.
10. detection industry control agreement according to claim 9 is with the presence or absence of abnormal device, which is characterized in that the classification
The byte value that type further includes counter field, corresponding default semantic constraint relationship is designated position byte is incremented by successively；
Correspondingly, the detection unit is specifically used for:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with counter field, can be straight
It connects determining industry control agreement and there is exception.
11. detection industry control agreement according to claim 10 is with the presence or absence of abnormal device, which is characterized in that the classification
Type further include session negotiation field, corresponding default semantic constraint relationship be in different TCP connections, designated position byte
Byte value be different from every time, and in fixed TCP connection, the byte value of designated position byte is kept not every time
Become；Correspondingly, the detection unit is specifically used for:
If judgement is known in the presence of the semantic inferred results for not meeting default semantic constraint relationship corresponding with session negotiation field, can
It directly determines industry control agreement and there is exception.
12. detection industry control agreement according to claim 11 is with the presence or absence of abnormal device, which is characterized in that the classification
Type further includes numeric field within the scope of fixed numbers, the byte that corresponding default semantic constraint relationship is designated position byte
Numerical value is within the scope of fixed numbers；Correspondingly, the detection unit is specifically used for:
If judgement is known in the presence of the language for not meeting default semantic constraint relationship corresponding with the numeric field within the scope of fixed numbers
Adopted inferred results can directly determine industry control agreement and there is exception.
13. according to any detection industry control agreement of claim 8 to 12 with the presence or absence of abnormal device, which is characterized in that
The default abnormality detection rule further includes and predetermined sequence off-note；Correspondingly, described device is also used to:
The sequence signature of all communication messages is identified, if detecting at least one sequence signature and the predetermined sequence off-note
It is corresponding, it is determined that the industry control agreement exists abnormal.
14. according to any detection industry control agreement of claim 8 to 12 with the presence or absence of abnormal device, which is characterized in that
The comparison unit is specifically used for:
Multiple Sequence Alignment is carried out to all communication messages using Multiple sequence alignments MSA algorithm.
15. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that the processor is realized when executing described program such as any one of claim 1 to 7 the method
Step.
16. a kind of non-transient computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer
It is realized when program is executed by processor such as the step of any one of claim 1 to 7 the method.
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