CN107979821A - The processing method and device of illegal No. 7 signalings - Google Patents

The processing method and device of illegal No. 7 signalings Download PDF

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Publication number
CN107979821A
CN107979821A CN201610919957.5A CN201610919957A CN107979821A CN 107979821 A CN107979821 A CN 107979821A CN 201610919957 A CN201610919957 A CN 201610919957A CN 107979821 A CN107979821 A CN 107979821A
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China
Prior art keywords
sender
recipient
signalling system
ownership
user
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CN201610919957.5A
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Chinese (zh)
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CN107979821B (en
Inventor
刘镓
史敏锐
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN201610919957.5A priority Critical patent/CN107979821B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a kind of processing method and device of illegal signalling system No.7, it is related to mobile communication technology field.The method of the present invention includes：Parsing obtains the sender of signalling system No.7；Judge whether sender is trusty；If sender appoints for untrusted, judge whether signalling system No.7 is the signaling for changing recipient's user information；If signalling system No.7 is the signaling of change recipient's user information, judge whether the ownership of recipient and sender are identical；If recipient is different from the ownership of sender, signalling system No.7 is intercepted.The present invention can combine the signaling type of signalling system No.7 and the ownership uniformity etc. of signaling receiving and transmission side in the case where the trust of sender is suspicious, further examination can suspicious signalling system No.7 intercepted, improve the security to communicate using signalling system No.7.

Description

The processing method and device of illegal signalling system No.7
Technical field
The present invention relates to mobile communication technology field, the more particularly to a kind of processing method and device of illegal signalling system No.7.
Background technology
Increase now with the International or National roaming number of mobile subscriber, international operator No. 7 (NO.7) signaling networks Interconnect more and more, the demand that network capabilities is opened to third-party platform is also more and more.Roaming partner it is very much The network equipment, such as MSC (Mobile Switching Center, mobile switching centre), HLR (Home Location Register, attaching position register), SCP (Service Control Point, service control point) can pass through No. 7 letter Order net sends the user property for inquiring about, changing other side or deletes the signaling of the positional information of the user of other side, at present with regard to network layer Face sees that these message are all rationally existing.
However, now with the continuous development of technology, international and national NO.7 signaling networks are more and more to be carried on IP network On network, cause some unauthorized persons to be defaulted as legal signaling this characteristic using signalling system No.7 and send some invalid messages To delete the positional information of user or inquiry, modification user property etc., user information is caused to reveal or can not normal communication.
The content of the invention
A technical problem to be solved by this invention is：How the security that using signalling system No.7 communicates is lifted.
According to an aspect of the present invention, there is provided a kind of illegal signalling system No.7 processing method, including：Parsing obtains No. 7 The sender of signaling；Judge whether sender is trusty；If sender appoints for untrusted, judge that signalling system No.7 is The no signaling for change recipient's user information；If signalling system No.7 is the signaling of change recipient's user information, judge to receive Whether side is identical with the ownership of sender；If recipient is different from the ownership of sender, signalling system No.7 is intercepted.
In one embodiment, parsing the sender of signalling system No.7 includes：To in the mobile application section message of signalling system No.7 Global title decoded, according to global title confirm signalling system No.7 sender.
In one embodiment, the recipient with signalling system No.7 be endorsed into the sender of roaming cooperation agreement be judged as can The sender of trust.
In one embodiment, judge recipient and sender ownership it is whether identical including：Parse the shifting in signalling system No.7 Dynamic application obscure portions message, obtains the international mobile subscriber identity of recipient user；Used according to the world of recipient user is mobile Country code or mobile network code in the identification code of family determine the ownership of recipient, and judge the ownership of recipient and sender It is whether identical.
In one embodiment, judge recipient and sender ownership it is whether identical including：If recipient user's Country code is 460, and sender is external sender, then judges that ownership is different；Alternatively, the mobile network according to recipient user Network number confirms the operator belonging to recipient, if recipient is different from the operator belonging to sender, judges ownership not Together.
In one embodiment, changing the signaling of recipient's user information includes inquiry user property, modification user property Or delete customer position information.
According to another aspect of the present invention, there is provided a kind of illegal signalling system No.7 processing unit, including：Sender solves Unit is analysed, the sender of signalling system No.7 is obtained for parsing；Sender's judging unit, for judging whether sender is trusted 's；Signaling content judging unit, in the case of appointing in sender for untrusted, judges whether signalling system No.7 is that change receives The signaling of square user information；User attaching judging unit, for the feelings in signalling system No.7 for the signaling of change recipient's user information Under condition, judge whether the ownership of recipient and sender are identical；Interception unit, for different from the ownership of sender in recipient In the case of, then signalling system No.7 is intercepted.
In one embodiment, sender's resolution unit, for the overall situation in the mobile application section message to signalling system No.7 Code is decoded, and the sender of signalling system No.7 is confirmed according to global title.
In one embodiment, the recipient with signalling system No.7 be endorsed into the sender of roaming cooperation agreement be judged as can The sender of trust.
In one embodiment, user attaching judging unit, for parsing the mobile application section message in signalling system No.7, Obtain the international mobile subscriber identity of recipient user；According to the country in the international mobile subscriber identity of recipient user Code name or mobile network code determine the ownership of recipient, and judge whether the ownership of recipient and sender are identical.
In one embodiment, user attaching judging unit, for being 460 in the country code of recipient user, and sends out In the case that the side of sending is external sender, then judge that ownership is different, alternatively, confirming according to the mobile network code of recipient user Operator belonging to recipient, in the case of operator's difference belonging to recipient and sender, then judges that ownership is different.
In one embodiment, changing the signaling of recipient's user information includes inquiry user property, modification user property Or delete customer position information.
In one embodiment, which is arranged on Signalling Transfer Point.
The present invention can combine the signaling type and signaling of signalling system No.7 in the case where the trust of sender is suspicious Ownership uniformity of transmitting-receiving side etc., further examination can suspicious signalling system No.7 intercepted, improve using signalling system No.7 into The security of row communication.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its Advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows the schematic diagram of illegal platform modifying user information in the prior art.
Fig. 2 shows the schematic diagram of illegal platform deletion user information in the prior art.
Fig. 3 shows the flow diagram of the processing method of the illegal signalling system No.7 of one embodiment of the present of invention.
Fig. 4 shows the flow diagram of the processing method of the illegal signalling system No.7 of an alternative embodiment of the invention.
Fig. 5 shows the structure diagram of the processing unit of the illegal signalling system No.7 of one embodiment of the present of invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Lower all other embodiments obtained, belong to the scope of protection of the invention.
In the prior art, signalling system No.7 is defaulted as credible signaling, and unauthorized person can delete user using signalling system No.7 Positional information or inquiry, modification user property etc., cause user information to reveal or can not normal communication.Such as Fig. 1 and Fig. 2 institutes Show, some illegal home or overseas emulation platforms imitate MSC or VLR (Visitors of the SCP or HLR to regular operator Location Register, VLR Visitor Location Register) send modification user call proceeding address or delete user information, cause User can not normal communication, in view of the above-mentioned problems, propose this programme.
With reference to the processing method of the illegal signalling system No.7 of Fig. 3 description present invention.
Fig. 3 is the flow chart of processing method one embodiment of the illegal signalling system No.7 of the present invention.As shown in figure 3, the embodiment Method include：
Step S302, parsing obtain the sender of signalling system No.7.
Specifically, to the GT in MAP (Mobile Application Part, mobile application section) message of signalling system No.7 (global title) is decoded, and the sender of signalling system No.7 is confirmed according to GT.Can be with for any one signalling point in global range Unique mark is carried out with GT codes, therefore, operator or third-party platform belonging to the sender of signaling can be known by GT codes. Intercepted after MAP message is identified by the mark of MAP message institute band, then decoding translation etc. is carried out to GT codes therein.
Step S304, judges whether sender is trusty, then carries out signalling system No.7 normally if trusty Route, appoints if untrusted, performs step S306.
Wherein, the sender that the recipient with signalling system No.7 endorsed to roaming cooperation agreement is judged as transmission trusty Side.If sender and the equipment of recipient belong to different operator or third-party platform, but endorsed roaming cooperation association View, then sender can the side's of being received trust, its send change user information signaling then be it is legal.
Step S306, judges whether signalling system No.7 is the signaling for changing recipient's user information, if it is, performing step S308, otherwise, signalling system No.7 is normally route.
Wherein, changing the signaling of recipient's user information includes inquiry user property, modification user property or deletes user Positional information.User property is, for example, number etc. of transferring, and international calling does not allow to inquire about, changes domestic user's attribute or delete state The message of interior customer position information, operator or third-party platform do not allow to inquire about, change other operators or third-party platform User property, or delete the message of the customer position information of other operators or third-party platform.
Step S308, judges whether the ownership of recipient and sender are identical, if the ownership phase of recipient and sender Together, then signalling system No.7 is normally route, otherwise, performs step S310.
Specifically, MAP (mobile application section) message in parsing signalling system No.7, obtaining change, user information is corresponding connects The IMSI of the user of debit (move by International Mobile Subscriber Identification Number, the world Dynamic CUSTOMER ID), the country code or mobile network code in IMSI are obtained, according to country code (MCC) or mobile network Number (MNC) judges whether the ownership of recipient and sender are identical.Further, if the country code of recipient user is 460, and sender is external sender, then judges that ownership is different, starts the country code of front three in the IMSI of Chinese user For 460, if for example, judge sender according to GT for external operator or third-party platform, and the IMSI of the user of recipient Beginning be 460, then recipient is different from the ownership of sender.Alternatively, confirmed according to the mobile network code of recipient user Operator belonging to recipient, if recipient is different from the operator belonging to sender, judges that ownership is different.For example, hair The side of sending is Domestic Carriers or third-party platform, then judges mobile network code, the mobile network code of Chinese operator is 460 Two afterwards represent that wherein x differences then represent different operators, according to belonging to mobile network code judges recipient with 0x Operator, and judge whether the operator of the ownership of recipient and sender identical.Further, for sender and reception The situation of Fang Junwei third-party platforms, such as the situation that virtual operator is communicated by the network of operator, according to IMSI Other after middle mobile network code distinguish the third-party platform that can be identified belonging to recipient, and then can also Judge whether the ownership of recipient and sender are identical.
Step S310, signalling system No.7 is intercepted.
Specifically, it can directly refuse or abandon the signalling system No.7.
It should be noted that the operation such as inquiry, modification or deletion in above-described embodiment to user information disappears included in MAP Breath, and when the information of sender and recipient are also contained in MAP signalings, can pre-define the type of message to be intercepted is MAP message, naturally it is also possible to according to the type for the invalid message for being actually needed identification, definition needs the type of the message intercepted, And the form of message, parameter etc..
The method of above-described embodiment, in the case where the trust of sender is suspicious, can combine the signaling class of signalling system No.7 Type and the ownership uniformity of signaling receiving and transmission side etc., further examination can suspicious signalling system No.7 intercepted, improve utilization The security that signalling system No.7 communicates.
Whether the sender by judging signalling system No.7 is trusty, signaling type and the user involved by signaling is The no sender for being attributed to signalling system No.7, is identified illegal signalling system No.7, the International or National signaling appointed for untrusted Sender is inquired about for the user of other operators, changes user property or delete the operation of customer position information, then is known It illegal signaling and Wei not intercept, solve the problems, such as that domestic and international hacker utilizes protocol bug attacking network and user, reduce use The compromised possibility of family privacy, improves the security of user information and the security of network entirety.
The method of above-described embodiment can be applied to International or National Signalling Transfer Point (STP) place, specifically, can answer At first Signalling Transfer Point docked for recipient between different operators with sender, can at the first time will be non- Method signalling system No.7 is identified and handles, naturally it is also possible on other Signalling Transfer Points, or the receiving device of operator Or in the other equipment before receiving device.
With reference to another embodiment of the processing method of the illegal signalling system No.7 of Fig. 4 description present invention.
Fig. 4 is the flow chart of another embodiment of the illegal processing method of signalling system No.7 of the present invention.As shown in figure 4, the implementation The method of example includes：
Step S402, intercepts the MAP message of signalling system No.7.
Step S404, decodes the GT codes in MAP message, obtains the sender of MAP message.
Specifically, for example according to SCCP (Skinny Call Control Protocol, signaling connection control protocol).
Step S406, whether the sender for judging MAP message is trusty, if execution step trusty S407, otherwise, performs step S408.
Step S407, MAP message is normally route.
Step S408, judges whether MAP message is the message for changing recipient's user information.If it is step is performed S410, otherwise, performs step S407.
Wherein, the message for changing user information is, for example, to inquire about user property, modification user property or deletion customer location The message of information.
Step S410, according to the IMSI of recipient user in MAP message judge recipient and sender ownership whether phase Together, if it is, performing step S407, otherwise, step S412 is performed.
Specific determination methods refer to step S308.
Step S412, refuses or abandons the MAP message.
The present invention also provides a kind of processing unit of illegal signalling system No.7, it is described with reference to Fig. 5.
Fig. 5 is the structure chart of one embodiment of the processing unit of the illegal signalling system No.7 of the present invention.The device can be arranged at On STP (Signalling Transfer Point), as shown in figure 5, the device 50 includes：
Sender's resolution unit 502, the sender of signalling system No.7 is obtained for parsing.
Wherein, sender's resolution unit 502, carries out for the global title in the mobile application section message to signalling system No.7 Decoding, the sender of signalling system No.7 is confirmed according to global title.
Sender's judging unit 504, for judging whether sender is trusty.
Wherein, the sender that the recipient with signalling system No.7 endorsed to roaming cooperation agreement is judged as transmission trusty Side.
Signaling content judging unit 506, for sender for untrusted appoint in the case of, judge signalling system No.7 whether be Change the signaling of recipient's user information.
Wherein, changing the signaling of recipient's user information includes inquiry user property, modification user property or deletes user Positional information.
User attaching judging unit 508, in the case of in signalling system No.7 for the signaling of change recipient's user information, Judge whether the ownership of recipient and sender are identical；
Wherein, user attaching judging unit 508, for parsing the mobile application section message in signalling system No.7, obtains and receives The international mobile subscriber identity of square user；Country code or shifting in the international mobile subscriber identity of recipient user Dynamic network number determines the ownership of recipient, and judges whether the ownership of recipient and sender are identical.
Specifically, user attaching judging unit 508, for being 460 in the country code of recipient user, and states sender In the case of for external sender, then judge that ownership is different, alternatively, confirming to receive according to the mobile network code of recipient user Operator belonging to side, in the case of operator's difference belonging to recipient and sender, then judges that ownership is different.
Interception unit 510, in the case of the ownership difference of recipient and sender, then being blocked signalling system No.7 Cut.
Specifically, interception unit 510, for refusing or abandoning the signalling system No.7.
Further, which also sets up IT interfaces, is used for realization definition to current signaling and its parameter and not To increase the expanded function of message or parameter newly.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment To complete, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.

Claims (13)

  1. A kind of 1. processing method of illegal signalling system No.7, it is characterised in that including：
    Parsing obtains the sender of signalling system No.7；
    Judge whether described sender is trusty；
    If described sender is appointed for untrusted, judge whether the signalling system No.7 is the letter for changing recipient's user information Order；
    If signaling of the signalling system No.7 for change recipient's user information, judges the recipient and described sender Whether ownership is identical；
    If the recipient is different from the ownership of described sender, the signalling system No.7 is intercepted.
  2. 2. according to the method described in claim 1, it is characterized in that,
    The sender that the parsing obtains signalling system No.7 includes：
    Global title in the mobile application section message of the signalling system No.7 is decoded, confirms described 7 according to the global title The sender of number signaling.
  3. 3. according to the method described in claim 1, it is characterized in that,
    The sender that endorsed roaming cooperation agreement with the recipient of the signalling system No.7 is judged as sender trusty.
  4. 4. according to the method described in claim 1, it is characterized in that,
    It is described judge the recipient and described sender ownership it is whether identical including：
    The mobile application section message in signalling system No.7 is parsed, obtains the international mobile subscriber identity of the recipient user；
    Described in country code or mobile network code in the international mobile subscriber identity of the recipient user determine The ownership of recipient, and judge whether the ownership of the recipient and described sender is identical.
  5. 5. according to the method described in claim 4, it is characterized in that,
    It is described judge the recipient and described sender ownership it is whether identical including：
    If the country code of the recipient user is 460, and described sender is external sender, then judges ownership not Together；
    Alternatively, the operator according to belonging to the mobile network code of the recipient user confirms the recipient, if received Side is different from the operator belonging to sender, then judges that ownership is different.
  6. 6. according to claim 1-5 any one of them methods, it is characterised in that
    The signaling of change recipient's user information includes inquiry user property, modification user property or deletes customer location letter Breath.
  7. A kind of 7. processing unit of illegal signalling system No.7, it is characterised in that including：
    Sender's resolution unit, the sender of signalling system No.7 is obtained for parsing；
    Sender's judging unit, for judging whether described sender is trusty；
    Signaling content judging unit, for described sender for untrusted appoint in the case of, judge the signalling system No.7 whether be Change the signaling of recipient's user information；
    User attaching judging unit, in the case of in the signalling system No.7 for the signaling of change recipient's user information, judges Whether the ownership of the recipient and described sender is identical；
    Interception unit, in the case of the ownership difference of the recipient and described sender, then by the signalling system No.7 into Row intercepts.
  8. 8. device according to claim 7, it is characterised in that
    Described sender resolution unit, decodes for the global title in the mobile application section message to the signalling system No.7, The sender of the signalling system No.7 is confirmed according to the global title.
  9. 9. device according to claim 7, it is characterised in that
    The sender that endorsed roaming cooperation agreement with the recipient of the signalling system No.7 is judged as sender trusty.
  10. 10. device according to claim 7, it is characterised in that
    The user attaching judging unit, for parsing the mobile application section message in signalling system No.7, obtains the recipient and uses The international mobile subscriber identity at family；Country code or shifting in the international mobile subscriber identity of the recipient user Dynamic network number determines the ownership of the recipient, and judges whether the ownership of the recipient and described sender is identical.
  11. 11. device according to claim 10, it is characterised in that
    The user attaching judging unit, for being 460 in the country code of the recipient user, and states sender as foreign countries In the case of sender, then judge that ownership is different, alternatively, being connect according to confirming the mobile network code of the recipient user Operator belonging to debit, in the case of operator's difference belonging to the recipient and sender, then judges that ownership is different.
  12. 12. according to claim 7-11 any one of them devices, it is characterised in that
    The signaling of change recipient's user information includes inquiry user property, modification user property or deletes customer location letter Breath.
  13. 13. according to claim 7-11 any one of them devices, it is characterised in that
    Described device is arranged on Signalling Transfer Point.
CN201610919957.5A 2016-10-21 2016-10-21 Method and device for processing illegal No.7 signaling Active CN107979821B (en)

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