KR101603692B1 - Method of identifying terminals and system thereof - Google Patents

Abstract

A shared terminal identification method and system thereof are disclosed. Upon receiving the Internet access request of the terminal, the shared terminal identification server identifies the terminal environment information including the type and version information of the Internet access browser included in the Internet access request and transmits the IP address of the terminal or the user identifier mapped to the IP address Together with the detection database, identifies whether there is different terminal environment information for one IP address or user identifier and identifies whether or not to share the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a shared terminal identification method,

The present invention relates to a method and system for identifying a shared terminal, and more particularly, to a method and apparatus for identifying whether or not a plurality of terminals share an Internet Protocol (IP) will be.

In order to use the Internet, a user usually establishes an agreement with an ISP (Internet Service Provider) and a 1-line terminal. However, some users may use a plurality of terminals on a single line using an Internet router.

In this case, it may become difficult to provide smooth service due to excessive traffic, and serious problems such as cracking, viruses, worms, and the like may be caused, and the Distributed Denial of Service (DDoS) Service) may be used for Internet crime. Therefore, it is necessary to know whether a plurality of terminals use one IP address so as to take appropriate measures.

Patent Registration No. 1002421 Patent Laid-Open Publication No. 2009-0041752

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for a terminal that can share an IP address based on terminal environment information such as the type and version information of an Internet access browser being used in a terminal without installing a separate application in a terminal, And to provide a method and system thereof that can be easily identified.

According to another aspect of the present invention, there is provided a method of detecting an error in a server, the method comprising: And a system for identifying the shared terminal.

According to another aspect of the present invention, there is provided a shared terminal identification method including: receiving an Internet access request from a terminal; Determining terminal environment information including the type and version information of the Internet access browser included in the Internet access request; Storing the terminal environment information in a detection database together with an IP address of the terminal or a user identifier mapped to the IP address; Determining the number of different terminal environment information belonging to the IP address or the user identifier of the terminal; And identifying whether to share based on the number.

According to another aspect of the present invention, there is provided a shared terminal identification method comprising: receiving an Internet access request from a terminal; Identifying terminal environment information including type and version information of an Internet access browser included in the Internet access request; Storing the terminal environment information together with an IP address of the terminal or a user identifier mapped to the IP address in a primary detection database; Determining a number of different pieces of UE environment information in the IP address or user identifier of the UE with reference to the primary detection database; A first command for reconnecting to a site to be accessed in the Internet access request and a terminal identification code for distinguishing the terminal from the terminal if the number of the different terminal environment information is out of a preset reference value, Generating a response packet including a second command for requesting reconnection to a virtual web site and transmitting the response packet to the terminal; Transmitting a terminal identification code to the terminal so that it can be stored in a space accessible by an Internet access browser used for Internet connection of the terminal when the terminal reconnects according to the second command; Storing in the secondary detection database a terminal identification code to be transmitted to the terminal together with an IP address or user identifier of the terminal; And detecting a sharing state by identifying the number of the terminal identification codes belonging to one IP address or the user identifier with reference to the secondary detection database.

According to another aspect of the present invention, there is provided a method for identifying a shared terminal, the method comprising: receiving terminal environment information including type and version information of an Internet access browser included in an Internet access request of the terminal, Selecting candidate candidates for detection based on whether a plurality of candidates exist; And redirecting the Internet access request of the terminal belonging to the detection target candidate group to the terminal after the terminal identification code is searched, and detecting the number of the terminal identification codes belonging to one IP address to detect the shared terminal.

According to the present invention, it is possible to easily identify a shared terminal by inserting a detection algorithm into the terminal or using terminal environment information such as the type of browser and version information being used in the terminal without redirection process, And in case of a failure in the shared terminal identification server, the use of the terminal is not affected at all.

In addition, since the precise detection algorithm using redirection is applied only to the candidate group that is first identified by the shared terminal based on the terminal environment information such as the type of browser and version information being used in the terminal, . In addition, when a plurality of browsers are used in a terminal, a problem that one terminal is erroneously detected as a plurality of terminals can be solved.

Brief Description of the Drawings Fig. 1 shows a schematic structure of an overall system to which a shared terminal identification method according to the present invention is applied,
2 is a diagram illustrating a configuration of an example of a shared terminal identification server according to the present invention;
3 is a diagram illustrating an example of a method for generating a filtering database according to the present invention;
4 is a diagram illustrating an example of data stored in the filtering database according to the present invention;
5 illustrates an example of a method for generating a candidate group database according to the present invention;
6 is a diagram showing an example of data stored in the primary detection database according to the present invention;
7 is a diagram illustrating an example of a method of precise detection of a shared terminal using a candidate group database according to the present invention,
8 is a diagram illustrating an example of a method for preventing a detection error of a terminal using a plurality of browsers according to the present invention.

Hereinafter, a shared terminal identification method and system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a schematic structure of an overall system to which a shared terminal identification method according to the present invention is applied.

Referring to FIG. 1, a plurality of terminals 100, 110, and 112 use the internet using one public IP address using an Internet router (not shown). The Internet router (not shown) changes the public IP address of a packet coming into the internal network 115 from the Internet 120 to a private IP address and changes the private IP address of a packet going out from the internal network 115 to the Internet 120 By changing to the public IP address, a plurality of terminals 100, 110, and 112 can use the Internet using one public IP. That is, the internal network 115 including a plurality of terminals as viewed from the outside, such as the Internet server 140, appears as one terminal.

The traffic mirroring device 130 mirrors the packets transmitted from the terminals 100, 110 and 112 and transmits the packets to the shared terminal identification server 150. Since the shared terminal identification server 150 receives the packet through the traffic mirroring device 130, the shared terminal identification server 150 does not affect the Internet use of the terminals 100, 110, and 112 at all even when the server 150 fails and normal operation is impossible. The shared terminal identification server 150 may be implemented at the location of the traffic mirroring device 130 without the traffic mirroring device 130 or may be implemented together with the Internet server 140, .

The terminals 100, 110 and 112 have various operating systems such as Windows NT, Windows 98, and Linux, and include at least one or more Internet browsers (e.g., Internet Explorer, Safari, etc.) for Internet access. Also, the types and versions of network frameworks of the terminals 110, 110, and 112 may be different from each other. Accordingly, the terminals 100, 110, and 112 transmit the terminal environment information including the browser type and version information of the terminals 100, 110 and 112 to the Internet access request packet so that the Internet server 140 can know the terminal environment information. The terminal environment information such as the type and version of the operating system, the type and version of the Internet access browser, and the like may be different for each of the terminals 100, 110 and 112, thereby identifying the shared terminal.

2 is a diagram illustrating a configuration of an exemplary shared terminal identification server according to the present invention.

2, the shared terminal identification server 150 includes a candidate selection unit 200, a filtering database 210, a primary detection database 220, a blocking change unit 225, a candidate group database 230, (240) and a secondary detection database (250). Although the shared terminal identification server 150 is shown as one server in the present embodiment, the shared terminal identification server 150 can be variously modified, for example, a plurality of servers or a distributed system.

The filtering database 210 stores a list of various combinations such as the type and version of the window operating system that can be included in the packet when the user makes an Internet access request through the Internet access browser, the type and version of the Internet access browser, and the like.

Generally, an Internet access request is not only required when a user requests through an Internet access browser, but also when various programs or agents (for example, a system agent, etc.) are being used in the terminal irrespective of the user's request, You may be asked to connect to the Internet to connect. The terminal environment information included in the Internet access request of the user through the Internet access browser and the Internet access request by the system agent may differ from each other as the request subject is different. Therefore, if the terminal environment information is unconditionally collected, a plurality of different terminal environment information (i.e., the first terminal environment information at the time of requesting the Internet access of the Internet access browser, the second terminal environment information of the Internet access request of the system agent, Can be detected, and one terminal can be erroneously detected as a plurality of terminals.

Accordingly, the filtering database 210 may generate and store an example (i.e., a white list) of UE environment information corresponding to the user's Internet access request through the Internet access browser in advance, It is only a shared terminal for Internet access request. The generation of the filtering database will be described in detail with reference to FIG.

When the candidate selecting unit 200 receives the Internet access request of the terminal through the traffic mirroring apparatus 130, the candidate selecting unit 200 determines whether the terminal environment information included in the Internet access request exists in the filtering database 210. [ When the terminal environment information exists in the filtering database 210, the candidate selector 200 stores the IP address of the terminal and the terminal environment information in the primary detection database 220. As another example, the candidate selection unit 200 may assign a user identifier to each IP address, and then store the terminal environment information and the like together with the user identifier in the primary detection database 220. In addition, Information can also be stored together.

When the number of different pieces of UE environment information in the same IP address (or user identifier) is out of a preset reference value by referring to the primary detection database, the candidate selecting unit 200 selects the IP address as a precision detection target candidate group, (230). The generation of the candidate group database 230 will be described in detail with reference to FIG.

According to the embodiment, a shared terminal identification server composed of only the candidate selection unit 200, the filtering database 210, and the primary detection database 220 can be constructed. In this case, the terminal selected by the candidate selection unit 200 as a candidate group through the primary detection database 220 becomes a shared terminal, and grasps the number of shared terminals based on the number of different pieces of terminal environment information.

When detecting a shared terminal based on only the terminal environment information, there is no need to perform a process of installing a separate detection program in the terminal or interposing a packet in between and arranging the terminal identification code for distinguishing the terminal in the terminal, There is a possibility that a plurality of terminals sharing one IP may include the same terminal environment information in some cases. Therefore, a candidate group stored in the candidate group database 230 A more accurate shared terminal detection process is performed.

When the precise detection unit 240 receives the Internet access request of the terminal through the traffic mirroring apparatus 130, the precise detection unit 240 determines whether the terminal exists in the candidate group database 230. If the terminal is present in the candidate group database 230, the precision detector 240 determines whether the terminal is in the candidate group database 230 so that the first request including a command to reconnect to the site to which the terminal originally attempts to connect is stored, 150 or a second request for requesting reconnection to a virtual web site, and transmits the response packet to the terminal. The transmission of the response packet must be performed earlier than the response of the Internet server 140 which is originally connected in the Internet access request of the terminal.

Upon receiving the response packet, the terminal reconnects to the site to be originally accessed according to the first request, reconnects to the shared terminal identification server 150 or the virtual website according to the second request, And stores the terminal identification code in a storage space accessible to the Internet access browser.

The precision detection unit 240 detects the terminal identification code included in the terminal reconnection request and stores the terminal identification code in the secondary detection database 250. Then, the precision detection unit 240 detects the terminal identification code . The shared terminal identification process of the precision detection unit 240 will be described in detail with reference to FIG. A method for preventing erroneous detection when a terminal uses a plurality of browsers will be described with reference to Fig.

In one embodiment, the shared terminal detection server may further include a blocking changing unit 225. [ If the number of different pieces of UE environment information in the same IP address (or user identifier) is out of a preset reference value by referring to the primary detection database, the cutoff changing unit 225 leaves the number of allowed terminals to the terminal requesting the current Internet connection And a corresponding window can be provided together with a button for changing the terminal. This will be described in detail with reference to FIG.

3 is a diagram illustrating an example of a method of generating a filtering database according to the present invention.

3, when the shared terminal identification server 150 receives the Internet access request of the terminal through the traffic mirroring device 130 (S300), the shared terminal identification server 150 transmits information such as the type and version of the Internet access browser included in the Internet access request (Step S310).

The Internet access request may be requested not only by a user through an Internet access browser but also by various programs or system agents operating on the terminal. Therefore, the shared terminal identification server 150 preliminarily defines an example of the terminal environment information included only in the case of exception information that is not included in the Internet access request through the Internet access browser of the user, that is, If the request is an Internet access request including exception information, filtering is performed to discard it (S320).

 A number of terminal environment information can be combined according to the type and version of the operating system of the terminal, the type and version of the browser, the version of the network framework, and the like. I can not. The filtering step S320 is effective to partially reduce the processing load of the shared terminal identification server 150, and may be omitted according to the embodiment.

In order to construct a list (i.e., white list) of the terminal environment information corresponding only to the Internet access request through the Internet access browser of the user, the shared terminal identification server 150 stores cumulatively accumulated terminal environment information The distribution is calculated (S330). Since most of the Internet access requests are requests through the Internet access browser of the user, the shared terminal identification server 150 extracts the terminal environment information belonging to the upper certain range (for example, 20% range) based on the accumulated number, As a filtering database (S340). The generation of the filtering database may be pre-established before performing the step of identifying the shared terminal of FIG. 5 or 7, or may be generated in real time with the steps of FIG. 5 or 7.

4 is a diagram showing an example of data stored in the filtering database according to the present invention.

Referring to FIG. 4, the filtering database 400 includes terminal environment information 410 and a mapped code value 420. The terminal environment information includes an operating system, a browser type and version information, and version information of various network frameworks. The terminal environment information differs according to the environment of each terminal. Also, since the environment of each terminal is different from each other, the size of the terminal environment information indicating each terminal may be different from each other.

4, only the browser type (Internet Explorer (MSIE)) and its version information (6.0), the operating system type and version information (windows 98 and windows NT 4.0) are shown as examples of the terminal environment information. However, Various information indicating the environment of the terminal may be included in the Internet access request, and the greater the amount of information, the higher the ability to identify the terminal.

Since the shared terminal identification server 150 has to process a large number of Internet access requests, in order to reduce the time required to perform comparison operations on terminal environment information having different sizes of several tens of bytes, (For example, 4-byte integer data). However, according to the embodiment, the filtering database 400 stores only the terminal environment information 410 without the code value 420 and performs the comparison operation with the terminal environment information 410 itself can do.

5 is a diagram illustrating an example of a method of generating a candidate group database according to the present invention.

Referring to FIG. 5, the shared terminal identification server 150 receives the Internet access request of the terminal through the traffic mirroring device 130 (S500), and obtains the terminal environment information included in the Internet access request (S510). The shared terminal identification server 150 checks whether the terminal environment information exists in the filtering database 400 (FIG. 4) (S520).

In another embodiment, the shared terminal identification server 150 may be configured to perform a candidate group database creation process only when the type of the web browser used in the Internet access request is a specific web browser, (Not shown) for determining whether the web browser identified based on the terminal environment information of the connection request is a specific web browser. For example, the shared terminal identification server 150 may implement the process of FIG. 5 only when the web browser used in the Internet access request is an Internet Explorer.

If the terminal environment information exists in the filtering database 400 in operation S520, the shared terminal identification server 150 determines the code value 420 mapped with the terminal environment information 410 in operation S530. In the primary detection database 220 together with the IP address (or the user identifier) of the user (step S540). If the "code value-IP address (or user identifier)" already exists in the primary detection database 220, the shared terminal identification server 150 does not need to store the corresponding terminal environment information again, 220 updates the reception time when managing the reception time information. In the case where the primary detection database 220 stores and manages the reception time information, the shared terminal identification server 150 stores the terminal environment information that has passed the predetermined time range (for example, one day, one week, etc.) It is possible to prevent erroneous detection in the case where the operating system of the terminal or the type of the browser or the like is changed by deleting it in the detection database 220. [

The shared terminal identification server 150 determines the number of different code values (or terminal environment information) belonging to the IP address (or user identifier) of the terminal corresponding to the Internet access request in operation S550. For example, as shown in FIG. 6, there are two code values 'code 1' and 'code 2' for the user identifier 'A' in the primary detection database 600. If the number of code values exceeds the reference value (S560), the shared terminal identification server 150 identifies the corresponding IP address (or user identifier) as a shared terminal and stores it in the candidate group database 230 (S570). For example, if the reference value is 1, the user identifiers 'A' and 'B' in FIG. 6 have two different code values and are stored in the candidate group database 230.

If the number of different code values belonging to the IP address (or the user identifier) of the terminal requesting the Internet access is out of the predetermined reference value (i.e., the number of available terminals) (S560), the shared terminal identification server 150 transmits, An announcement window indicating that the user has left the logarithm is generated and transmitted to the terminal (S580).

When a public window is displayed on the screen of the terminal, a button for changing the permitted terminal exists together with the public window. When the user clicks a button to change the terminal, the terminal transmits a permission terminal change request including terminal environment information to the shared terminal identification server 150.

Upon receiving the permission terminal change request from the terminal (S585), the shared terminal identification server 150 designates the terminal environment information (or the mapped code value) of the terminal included in the permission terminal change request as an internet allowable terminal, And stores it in the detection database 220. Then, the shared terminal identification server 150 changes the state of any of the terminal environment information (or the mapped code value) of the previous allowed internet terminal to the Internet disabled state, thereby blocking the use of the Internet, (S590). Steps S580, S585, and S590 for transmitting an announcement window to the terminal and changing the accepted terminal may be omitted according to the embodiment.

6 is a diagram showing an example of data stored in the primary detection database according to the present invention.

Referring to FIG. 6, the primary detection database 600 stores a code value 610 and a user identifier (or IP address) 620 mapped with the terminal environment information. If the filtering database 400 does not provide the mapped code value with the terminal environment information as described above, the primary detection database 600 stores the terminal environment information and the user identifier (or IP address of the terminal, not the code value 610) ). Here, the user identifier is an identifier assigned to the IP address of the terminal.

7 is a diagram illustrating an example of a method of precisely detecting a shared terminal using a candidate group database according to the present invention.

7, when the shared terminal identification server 150 receives the Internet access request of the terminal through the traffic mirroring device 130 (S700), the URL address of the site to which the Internet access request is to be connected is stored in the candidate URL list (S705). The candidate URL list may include 10 or 100 address lists, depending on the embodiment, as a list of addresses of sites to which the ordinary user frequently accesses. Therefore, the shared terminal identification server 150 does not need to perform the process of identifying whether or not the shared terminal is required for all Internet access requests, thereby reducing the load on the server. Of course, the configuration (S705) for grasping the existence of the URL list according to the embodiment may be omitted.

The shared terminal identification server 150 then determines whether the IP address (or user identifier) of the terminal exists in the candidate group database 230 (S710). Steps S705 and S710 may be performed by changing the order.

If the IP address (or user identifier) of the terminal exists in the candidate group database 230 (S720), the shared terminal identification server 150 transmits a first command for requesting reconnection to a web site that the terminal intends to access originally, Generates a response packet including the identification server 150 or a second command for requesting connection to a virtual website, and transmits the response packet to the terminal (S715). At this time, the shared terminal identification server 150 generates a response packet in which the first command is composed of 100% frames displayed on the screen of the terminal and the second command is composed of 0% frames not displayed on the screen of the terminal, It is possible to generate and transmit a response packet in which the first command is composed of 100% frames and the second command is composed of a script.

When the terminal transmits a connection request packet to the shared terminal identification server 150 or a virtual website in response to the second request, the terminal receives the connection request packet through the mirroring device and determines whether the terminal identification code exists in the connection request packet (S720).

If there is no terminal identification code in the connection request packet (S725), the shared terminal identification server 150 newly generates a terminal identification code, and transmits information such as the terminal identification code and the terminal's IP address (or user identifier) And stored in the detection database (S735). The shared terminal identification server transmits the terminal identification code to the terminal (S735). When the terminal receives the terminal identification code, the terminal stores the connection request packet in a storage place (for example, a cookie) accessible to the transmitting web browser.

Here, the terminal identification code may be a unique value directly generated by the shared terminal identification server 150, or may be a cookie or a flash shared object included in the Internet access request.

In another embodiment, the shared terminal identification server 150 transmits the terminal identification code to the terminal without storing the newly generated terminal identification code in the secondary detection database (S735), and receives the connection request packet including the terminal identification code The terminal identification code may be stored in the secondary detection database.

If there is a terminal identification code in the connection request packet (S725), the shared terminal identification server 150 determines whether the corresponding terminal identification code exists in the secondary detection database (S740). If the terminal identification code is present in the secondary detection database (S740), the terminal is previously detected and terminates without further detection. As another example, the secondary detection database 150 may further include the reception time information. If the terminal identification code is already present in the secondary detection database 250 (S740), the shared terminal identification server 150 It is possible to update only the reception time without having to separately store the terminal identification code

If the terminal identification code of the connection request packet is not present in the secondary detection database 250 (S740), the terminal identification code is stored in the secondary detection database 250 (S745) because it is the first searched terminal. If the terminal identification code does not exist in the connection request packet and the new terminal identification code is generated and transmitted to the terminal as described above (S725, S730), the storing step of S745 may be omitted . Conversely, if the step S745 is present, the storing process of the step S730 may be omitted. Of course, two steps (storage step of S730 and S745) may exist.

The shared terminal identification server 150 determines the number of different terminal identification codes belonging to the IP address (or user identifier) of the terminal by referring to the secondary detection database 250 (S750) (S755 and S760), the mobile terminal determines that the number of terminals is out of the allowed number.

8 is a diagram illustrating an example of a method for preventing a detection error of a terminal using a plurality of browsers according to the present invention.

Referring to FIG. 8, in response to a request received from the shared terminal identification server 150, the terminal stores the terminal environment information included in the Internet access request in a first storage space (for example, a cookie) The terminal identification code is recognized (S800). If the terminal environment information includes information of a plurality of Internet access browsers, the terminal identification code stored in the first storage space, which is accessible only to the browser that has made the Internet access request, is grasped.

The terminal recognizes the terminal identification code stored in the second storage space (e.g., the FlashShare object) accessible by a plurality of browsers including the browser used for the current Internet access request (S810). If the terminal identification codes stored in the first storage space and the second storage space differ from each other (S820), the terminal stores the terminal identification code stored in the second storage space in the first storage space (S830).

For example, if a user requests an Internet connection through a first browser of the terminal and then requests the Internet access through the second browser after the terminal identification code A is stored in the first storage space and the second storage space of the first browser, The shared terminal identification server 150 generates a terminal identification code B and transmits the terminal identification code B to the terminal. In this case, the shared terminal identification server 150 generates two terminal identification codes A and B for the same terminal, The terminal is erroneously detected. Therefore, when storing the terminal identification code in the terminal, the shared terminal identification server 150 stores the same value as the terminal identification code stored in the second storage space in the first storage space of the plurality of browsers. In this case, when the user accesses through the second browser, the terminal identification code A is included in the Internet access request, so that erroneous detection due to the use of a plurality of browsers can be prevented.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. The computer-readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner.

The present invention has been described with reference to the preferred embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (4)

Generating a filtering database including terminal environment information belonging to an upper certain range based on cumulative distribution of terminal environment information included in an Internet access request for a predetermined period;
Receiving an Internet access request of the terminal;
Identifying terminal environment information including type and version information of an Internet access browser included in the Internet access request;
Determining whether the terminal environment information of the terminal exists in the filtering database;
Storing the terminal environment information of the terminal in the primary detection database together with the IP address of the terminal or the user identifier mapped to the IP address if the terminal environment information of the terminal exists in the filtering database;
Determining a number of different pieces of UE environment information in the IP address or user identifier of the UE with reference to the primary detection database;
A first command for reconnecting to a site to be accessed in the Internet access request and a terminal identification code for distinguishing the terminal from the terminal if the number of the different terminal environment information is out of a preset reference value, Generating a response packet including a second command for requesting reconnection to a virtual web site and transmitting the response packet to the terminal;
Transmitting a terminal identification code to the terminal so that it can be stored in a space accessible by an Internet access browser used for Internet connection of the terminal when the terminal reconnects according to the second command;
Storing in the secondary detection database a terminal identification code to be transmitted to the terminal together with an IP address or user identifier of the terminal; And
And detecting a sharing state by identifying the number of terminal identification codes belonging to one IP address or user identifier by referring to the secondary detection database. The method of claim 1, wherein the transmitting the terminal identification code to the terminal comprises:
And transmitting to the terminal a command to store the same unique identification information in a first storage space accessible only by an Internet access browser used for Internet access of the terminal and a second storage space accessible to a plurality of Internet access browsers The shared terminal identification method comprising: 3. The method of claim 2, wherein the transmitting the terminal identification code to the terminal comprises:
And transmitting to the terminal an instruction to store unique identification information of the second storage space in the first storage space when the first storage space and the second storage space have different unique identification information Wherein the shared terminal identification method comprises: A computer-readable recording medium on which a program for performing the method according to any one of claims 1 to 3 is recorded.

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