JP2018157389A - Control device, control method, and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device, a control method, and a control program that can dynamically switch between restriction and non-restriction for communication of a communication terminal and improve users' convenience.SOLUTION: A restriction control unit 51 in a control device 50 applies restriction to communication of a general terminal 30, i.e. a restriction object if a manager terminal 20 is not in a belonging state to a relay device 10, and on the other hand applies non-restriction to the general terminal 30 if the manager terminal 20 is in the belonging state.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a control device, a control method, and a control program.

  Conventionally, for example, in order to restrict access to content inappropriate for children's education, a technique for providing a relay device with a filter function has been proposed (for example, Patent Document 1). In the technique disclosed in Patent Document 1, a fixed filter is set for each communication device to be restricted, and restriction according to the set filter is applied to communication of the communication terminal.

Japanese Patent Laying-Open No. 2006-046625

  There is a case where one communication terminal is shared between an administrator (for example, a guardian, a teacher, etc.) and a manager (child, student, etc.).

  However, since a fixed filter is set for the communication terminal in the above-described conventional technology, even in this case, even an administrator must use the communication terminal under communication restrictions, or the administrator However, since it is necessary to manually remove the restriction every time it is used, there is a possibility that it is not convenient.

  An object of the present invention is to provide a control device, a control method, and a control program capable of dynamically switching restriction / non-restriction on a communication terminal to improve user convenience.

  The control device according to the first aspect of the present invention is a control device that controls restriction on communication of the first communication device that is a restriction target, and the third communication device is in an unaffiliated state with respect to the own device. And a restriction control unit that applies restriction to communication of the first communication device, and applies non-restriction to communication of the first communication device when the third communication device is in the belonging state. .

  A control method according to a second aspect of the present invention is a control method performed by a control device that controls restriction on communication of a first communication device that is a restriction target, wherein the third communication device is not connected to the control device. When in the belonging state, the restriction is applied to the communication of the first communication apparatus, while when the third communication apparatus is in the belonging state, the restriction is applied to the communication of the first communication apparatus.

  The control program according to the third aspect of the present invention is the control device that controls the restriction on the communication of the first communication device that is the restriction target, and the third communication device is in an unaffiliated state with respect to the control device, While the restriction is applied to the communication of the first communication apparatus, when the third communication apparatus is in the belonging state, a process of applying the restriction to the communication of the first communication apparatus is executed.

  According to the present invention, it is possible to provide a control device, a control method, and a control program capable of dynamically switching restriction / non-restriction on communication of a communication terminal to improve user convenience.

It is a figure which shows the outline | summary of the communication system of 1st Embodiment. It is a block diagram which shows the structure of the relay apparatus of 1st Embodiment. It is a figure which shows an example of the communication system of 2nd Embodiment. It is a figure which shows an example of the administrator terminal management table of 2nd Embodiment, a communication restriction management table, and a communication mode management table. It is a figure which shows an example of the registration sequence of the information for communication control in the communication system of 2nd Embodiment. It is a sequence diagram which shows an example of the processing operation when the attribution request | requirement is performed in the communication system of 2nd Embodiment. It is a flowchart which shows an example of the communication mode switching phase process performed by the relay apparatus of 2nd Embodiment. It is a flowchart which shows an example of the communication restriction | limiting execution phase process performed by the relay apparatus of 2nd Embodiment. It is a sequence diagram which shows an example of the processing operation when the attribution cancellation | release request | requirement is performed in the communication system of 2nd Embodiment. It is a figure which shows an example of the administrator terminal management table of 3rd Embodiment, a communication restriction management table, and a communication mode management table. It is a flowchart which shows an example of the communication mode switching phase process performed by the relay apparatus of 3rd Embodiment. It is a figure which shows an example of the hardware constitutions of a control apparatus.

  Hereinafter, embodiments will be described with reference to the drawings. In the embodiment, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

<First Embodiment>
<Outline of communication system>
FIG. 1 is a diagram illustrating an overview of a communication system according to the first embodiment. In FIG. 1, the communication system 1 includes a communication device 10, a communication device 20, and a communication device 30. The communication device 10 is, for example, a relay device that relays communication between the communication device 20 or the communication device 30 and a communication partner device. The communication device 20 is, for example, a communication terminal that is carried by an administrator such as a child guardian or a teacher. The communication device 30 is a communication terminal shared between a manager such as a child and the manager, for example. In FIG. 1, the communication system 1 is drawn on the assumption that wireless communication is performed between the communication device 10 and the communication device 20 or the communication device 30. Communication may be performed. Hereinafter, the communication device 10 will be described as “relay device 10”, the communication device 20 as “manager terminal 20” and the communication device 30 as “general terminal 30”.

  The administrator terminal 20 belongs to the relay apparatus 10 by executing an “affiliation processing sequence” with the relay apparatus 10 in the “non-affiliation state” that does not belong to the relay apparatus 10. For example, in the attribution process sequence, the administrator terminal 20 transmits an attribution request to the relay device 10. Then, the relay device 10 transmits an attribution response to the attribution request to the administrator terminal 20. As a result, the administrator terminal 20 enters the “affiliation state” belonging to the relay device 10.

  When the relay device 10 receives a request signal transmitted from the general terminal 30 and requesting establishment of communication with the communication partner device, whether the administrator terminal 20 is in the belonging state or the non-attributing state. Accordingly, restriction or non-restriction is applied to communication of the general terminal 30.

<Configuration example of relay device>
FIG. 2 is a block diagram illustrating a configuration of the relay device according to the first embodiment. In FIG. 2, the relay device 10 includes a control device 50. The control device 50 includes a restriction control unit 51.

  The restriction control unit 51 restricts or restricts the communication of the general terminal 30 depending on whether the administrator terminal 20 is in the belonging state or the non-attaching state with respect to the relay device 10 (control device 50). Apply. Specifically, when the administrator terminal 20 is in an unaffiliated state with respect to the relay device 10, the restriction control unit 51 applies a restriction to the communication of the general terminal 30, while the administrator terminal 20 is in the belonging state. In this case, non-limitation is applied to communication of the general terminal 30.

  As described above, according to the first embodiment, in the control device 50, the restriction control unit 51 performs communication with the general terminal 30 that is a restriction target when the administrator terminal 20 is in an unaffiliated state with respect to the relay device 10. On the other hand, when the restriction is applied to the manager terminal 20 in the belonging state, the restriction is applied to the communication of the general terminal 30.

  Due to the configuration of the control device 50, when the manager terminal 20 is considered to be in the vicinity of the general terminal 30 and the manager terminal 20 is in the belonging state, the general terminal 30 communication is not restricted. The terminal 30 can be used without limitation. Further, when the administrator terminal 20 is considered not to be near the general terminal 30 and the administrator terminal 20 is in an unaffiliated state, communication is restricted to the general terminal 30, so that the administrator's eyes cannot be reached. An administrator can avoid using the general terminal 30 without restriction. That is, it is possible to dynamically switch the restriction non-restriction for the general terminal 30 to be restricted. Thereby, a user's convenience can be improved. Furthermore, since the restriction is not always applied to the communication of the general terminal 30, it is possible to avoid the deterioration of the device performance accompanying the communication restriction process of the control device 50.

<Modification>
In the above description, the description has been made on the assumption that there is one administrator terminal 20 in the communication system 1. However, the present invention is not limited to this, and a plurality of administrator terminals 20 may exist. Good. In this case, for example, the restriction control unit 51 may apply non-restriction to communication of the general terminal 30 when at least one of the plurality of administrator terminals 20 is in the belonging state.

Second Embodiment
<Configuration example of communication system>
FIG. 3 is a diagram illustrating an example of a communication system according to the second embodiment. In FIG. 3, the communication system 2 includes a relay device 10, an administrator terminal 20, a general terminal 30, a wide area network 60, and a server 70.

  In FIG. 3, the relay apparatus 10, the administrator terminal 20, and the general terminal 30 constitute a local network LNW. The local network LNW is a network constructed in, for example, a home, a school, a cram school classroom, or a public spot.

  As described above, the relay device 10 is a device that relays communication between the administrator terminal 20 or the general terminal 30 and the communication counterpart device (here, the server 70).

  As described above, the administrator terminal 20 is a communication terminal that is carried by an administrator such as a child guardian or a teacher. The administrator terminal 20 is a smart phone, a tablet terminal, a wearable terminal, etc., for example. When the administrator terminal 20 is a mobile terminal, the “affiliation state” is, for example, a state when the administrator is at home, and the “non-affiliation state” is, for example, a state when the user is out.

  As described above, the general terminal 30 is a communication terminal shared between the managed person and the manager. The general terminal 30 is a PC (Personal Computer), a tablet terminal, a game machine, a television, or the like.

  The wide area network 60 is a network outside the local network LNW, and the relay apparatus 10 and the server 70 are connected via the wide area network 60.

  The server 70 is a device that provides various functions related to communication.

<Configuration example of relay device>
In FIG. 3, the relay device 10 includes a storage unit 11, a communication interface 13, and a control device 150.

  The storage unit 11 stores an administrator terminal management table 11A, a communication restriction management table 11B, and a communication mode management table 11C. The administrator terminal management table 11A stores an identifier of one or a plurality of administrator terminals 20 and a “current belonging state” corresponding to each identifier in association with each other. Further, the communication restriction management table 11B stores “communication restriction setting” of each general terminal 30. Further, the communication mode management table 11C stores “communication mode switching setting” and “current communication mode”.

  FIG. 4 is a diagram illustrating an example of an administrator terminal management table, a communication restriction management table, and a communication mode management table according to the second embodiment.

  In FIG. 4, “terminal name”, “MAC address”, and “current belonging state” are stored in association with each other in the administrator terminal management table 11A. For example, in the first entry, the terminal name “a1” of the certain administrator terminal 20, the MAC address “00: 00: 00: 00: 01”, and the current attribution state “being attributed” are stored. Yes. The terminal name is a character string assigned to each administrator terminal 20. The terminal name may be automatically assigned by the relay device 10 or may be manually set by the administrator using setting means. In the “current attribution state”, either “being attributed (that is, the above-mentioned attribution state)” or “unassigned (that is, the above-mentioned non-attributed state)” is set. Here, in the administrator terminal management table 11A, for example, the MAC address of a terminal that has been connected to the relay apparatus 10 so far is stored, and the administrator terminal is selected from the stored MAC addresses. The entry can be added by selecting the MAC address of the terminal to be set as 20. Further, the “current attribution state” is changed from “not attributed” to “being attributed” by performing the above-described attribution processing sequence.

  In FIG. 4, the communication restriction management table 11B includes a batch setting table and an individual setting table. The collective setting table stores “communication restriction settings” that are basically set for all the general terminals 30. The individual setting table stores information related to the general terminal 30 to which other “communication restriction settings” are to be applied by excluding the application of “communication restriction settings” in the batch setting table. For example, in the individual setting table, “terminal name”, “MAC address”, and “communication restriction setting” are associated and stored. In the “communication restriction setting”, any one of “linked to the communication mode of the apparatus”, “always valid”, or “always invalid” is set. Whether the “communication restriction setting” “linked to the communication mode of the device” applies the restriction to the communication of the general terminal 30 to be restricted according to the content of the “current communication mode” in the communication mode management table 11C. It is a setting to switch whether to apply unrestricted. The “communication restriction setting” of “always valid” is a setting for applying a restriction to the communication of the restriction target general terminal 30 regardless of the content of the “current communication mode” in the communication mode management table 11C. “Communication restriction setting” of “always invalid” is a setting for applying non-restriction to communication of the general terminal 30 to be restricted regardless of the content of “current communication mode” of the communication mode management table 11C. Here, in the communication restriction management table 11B, for example, the MAC address of a terminal that has been connected to the relay apparatus 10 so far is stored, and the administrator terminal 20 is selected from the stored MAC addresses. The entry can be added by selecting the MAC address of the terminal to be set as.

  In FIG. 4, the communication mode management table 11 </ b> C stores “communication mode switching setting” and “current communication mode”. In “communication mode switching setting”, “valid” or “invalid” is set. The “current communication mode” is set to “restricted mode” or “non-restricted mode”. When “invalid” is set in “communication mode switching setting”, the mode set in “current communication mode” is always applied. On the other hand, when “valid” is set in “communication mode switching setting”, for example, “restricted mode” or “non-restricted” is determined depending on whether or not the “attributing” administrator terminal 20 exists. It is switched to “restrict mode”.

  Returning to the description of FIG. 3, the communication interface 13 includes a wireless interface (not shown) and a wired interface. The communication interface 13 is a communication interface between the administrator terminal 20, the general terminal 30, and the wide area network 60.

  As illustrated in FIG. 3, the control device 150 includes a communication control unit 150A and a table management unit 150B. The communication control unit 150A includes the restriction control unit 51 described above.

  The table management unit 150B performs management by creating and updating the administrator terminal management table 11A, the communication restriction management table 11B, and the communication mode management table 11C. For example, when the table management unit 150B receives the communication restriction information transmitted from the administrator terminal 20 via the communication interface 13 and the communication control unit 150A, the table management unit 150B uses the communication restriction information to manage the administrator terminal management table 11A, The communication restriction management table 11B and the communication mode management table 11C are updated. When the table management unit 150B receives the attribution request transmitted from the administrator terminal 20 via the communication interface 13 and the communication control unit 150A, the table management unit 150B enters an entry corresponding to the administrator terminal 20 in the administrator terminal management table 11A. Change "Current Attribution" from "Not Attributable" to "Attributing". When the table management unit 150B receives the attribution release request transmitted from the administrator terminal 20 via the communication interface 13 and the communication control unit 150A, the entry corresponding to the administrator terminal 20 in the administrator terminal management table 11A. Change the “current attribution status” from “being attributed” to “unassigned”. In addition, the table management unit 150B sets the “current communication mode” in the communication mode management table 11C when there is at least one entry whose “current attribution state” is “being belonging” in the administrator terminal management table 11A. Set to "unrestricted mode". On the other hand, the table management unit 150B sets the “current communication mode” of the communication mode management table 11C to “ Set to restricted mode.

  The restriction control unit 51 of the communication control unit 150A applies the restriction to the communication of the general terminal 30 when the administrator terminal 20 is in an unaffiliated state with respect to the relay device 10 as in the first embodiment. When the administrator terminal 20 is in the belonging state, the restriction is applied to the communication of the general terminal 30. In addition, when the restriction is applied to the communication of the general terminal 30, the restriction control unit 51 transmits an error response as a response signal to the communication establishment request signal instead of the communication partner apparatus (here, the server 70). Execute control.

<Operation example of communication system>
The processing operation of the communication system 2 having the above configuration will be described.

<Communication control information registration processing operation>
First, a communication control information registration sequence will be described. FIG. 5 is a diagram illustrating an example of a registration sequence of communication control information in the communication system according to the second embodiment.

  The administrator terminal 20 receives input of setting information by the administrator (step S11).

  Next, the administrator terminal 20 transmits the received setting information to the relay device 10 (step S12). For this transmission, for example, HTTP POST or the like can be used.

  Next, the table management unit 150B of the relay device 10 reflects the setting information received by the communication interface 13 in each table of the storage unit 11 (step S13).

  Next, the table management unit 150B of the relay device 10 executes control to transmit a setting result indicating that the reflection is completed to the administrator terminal 20 (step S14).

  Here, the case where the administrator transmits the setting information using the administrator terminal 20 has been described, but the apparatus used by the administrator for registration is not limited to this.

<Example of processing operation when attribution request is made>
FIG. 6 is a sequence diagram illustrating an example of a processing operation when an attribution request is made in the communication system according to the second embodiment.

  The administrator terminal 20 transmits an attribution request to the relay device 10 (step S21).

  Next, the relay device 10 transmits an attribution response to the attribution request to the administrator terminal 20 (step S22).

  Next, the relay device 10 executes “communication mode switching phase process” (step S23).

  FIG. 7 is a flowchart illustrating an example of a communication mode switching phase process executed by the relay device according to the second embodiment.

  In the control device 150 of the relay apparatus 10, the table management unit 150B determines whether or not the received request is an attribution request (step S31). If the request is an attribution request (YES in step S31), whether the request source is an administrator terminal. It is determined whether or not (step S32). In the sequence of FIG. 6, since the attribution request is transmitted from the administrator terminal 20 in step S21, the table management unit 150B determines that the received request is the attribution request and the request source is the administrator terminal.

  When the request source is the administrator terminal (step S32 YES), the table management unit 150B updates the “current attribution state” of the administrator terminal in the administrator terminal management table 11A to “being attributed” (step S33). ).

  Next, the table management unit 150B sets “current communication mode” in the communication mode management table 11C to “unrestricted mode” (step S34).

  On the other hand, when the received request is not an attribution request, that is, when the received request is an attribution cancellation request (NO in step S31), the table management unit 150B determines whether the request source is an administrator terminal (step S31). S35).

  When the request source is the administrator terminal (step S35 YES), the table management unit 150B updates the “current attribution state” of the administrator terminal in the administrator terminal management table 11A to “unassigned” (step S36). ).

  Next, the table management unit 150B determines whether or not there is an administrator terminal whose “current attribution state” is “belonging attribution” in the administrator terminal management table 11A (step S37).

  When there is no administrator terminal that is “belonging to” (NO in step S37), the table management unit 150B sets “current communication mode” in the communication mode management table 11C to “restricted mode” (step S38). On the other hand, if there is an administrator terminal that is “belonging to” (YES in step S37), the processing step proceeds to step S34.

  If the request source is not an administrator terminal, that is, if the request source is a general terminal (step S32NO, step S35NO), the process ends without performing the process.

  According to the communication mode switching phase process described above, in the case of the sequence of FIG. 6, the “current communication mode” of the administrator terminal 20 is updated to “being assigned” and “ The “current communication mode” is set to “unrestricted mode”.

  Returning to the description of FIG. 6, the general terminal 30 transmits a communication request to the relay device 10 (step S <b> 24).

  Next, when receiving the communication request, the relay device 10 executes “communication restriction execution phase process” (step S25).

  FIG. 8 is a flowchart illustrating an example of a communication restriction execution phase process executed by the relay device according to the second embodiment.

  In the control device 150 of the relay device 10, the restriction control unit 51 identifies the communication request source terminal (step S41).

  Next, the restriction control unit 51 identifies the communication restriction setting of the identified terminal by referring to the communication restriction management table 11B (Step S42).

  When the communication restriction setting specified in step S42 is “linked to the communication mode of the device”, the restriction control unit 51 refers to the communication mode management table 11C, so that the “current communication mode of the device” is the restriction mode. It is determined whether or not (step S43).

  When the restriction mode is set (YES in step S43), the restriction control unit 51 activates (applies) restriction on communication of the communication request source terminal (step S44).

  If the communication restriction setting specified in step S42 is “always valid”, the processing step proceeds to step S44.

  When the communication restriction setting specified in step S42 is “always invalid”, the restriction control unit 51 activates (applies) non-restriction to the communication of the communication request source terminal (step S45).

  In the sequence of FIG. 6, “unrestricted” is applied by the communication restriction execution phase process.

  Returning to the description of FIG. 6, the communication control unit 150A transmits the communication request received from the general terminal 30 to the server 70 (step S26). The server 70 transmits a communication response to the communication request to the general terminal 30 (step S27), and the relay device 10 receives the communication response transmitted from the server 70 and transfers it to the general terminal 30 (step S28). Thus, communication between the server 70 and the general terminal 30 is established.

<Example of processing operation when attribution cancellation request is made>
FIG. 9 is a sequence diagram illustrating an example of a processing operation when an attribution cancellation request is made in the communication system according to the second embodiment.

  The administrator terminal 20 transmits an attribution cancellation request to the relay device 10 (step S51).

  Next, the relay device 10 transmits an attribution cancellation response to the attribution cancellation request to the administrator terminal 20 (step S52).

  Next, the relay device 10 executes “communication mode switching phase process” (step S53). Here, it is assumed that “current communication mode” in the communication mode management table 11C is set to “restricted mode”.

  Next, the general terminal 30 transmits a communication request to the relay device 10 (step S54).

  Next, when receiving the communication request, the relay device 10 executes “communication restriction execution phase process” (step S55). Here, since the “current communication mode” in the communication mode management table 11C is set to “restricted mode”, the restriction control unit 51 activates (applies) restrictions on the communication of the general terminal 30. That is, the restriction control unit 51 does not transmit the communication request transmitted from the general terminal 30 to the server 70.

  Next, the restriction control unit 51 in the control device 150 of the relay device 10 executes control to transmit an error response to the general terminal 30 (step S56).

  As described above, according to the second embodiment, the restriction control unit 51 in the control device 150 applies an error response to the general terminal 30 as a response signal to the communication request when the restriction is applied to the communication of the general terminal 30. Send to.

  With the configuration of the control device 150, it is possible to notify the transmission source of the transmission request that the restriction is applied.

  Moreover, the control apparatus 150 switches the restriction | limiting and non-restriction with respect to communication of the general terminal 30 as a restriction | limiting mode set about the general terminal 30 which is a control object according to the non-affiliation state and the attachment state of the administrator terminal 20. 1 mode, a second mode in which restriction is always applied to communication of the general terminal 30, and a third mode in which non-limitation is always applied to communication of the general terminal 30. Here, the first mode is a mode corresponding to the above “linked to the communication mode of the device”, the second mode is a mode corresponding to the above “always valid”, and the third mode is the above-described mode. This mode corresponds to “always disabled”.

  With the configuration of the control device 150, it is possible to flexibly apply restriction / non-restriction to communication of the general terminal 30.

<Modification>
The following modifications can be made to the control device 150 of the second embodiment. In the above description, when the control device 150 receives an attribution release request from the administrator terminal 20, the “current attribution state” of the entry corresponding to the administrator terminal 20 in the administrator terminal management table 11A is changed from “being attributed”. Although it is changed to “unassigned”, it is not limited to this. For example, a “confirmation signal” is periodically transmitted to the administrator terminal 20 to which the restriction control unit 51 of the communication control unit 150A belongs, and a response signal for the confirmation signal has passed from the administrator terminal 20 for a certain period of time. Is not transmitted, the table management unit 150B changes the “current attribution state” of the entry corresponding to the administrator terminal 20 in the administrator terminal management table 11A from “being attributed” to “not attributed” May be. As a result, for example, when the administrator terminal 20 has moved outside the communication range of the relay device 10, the administrator terminal 20 can be brought into an unaffiliated state. It is possible to reliably avoid using the general terminal 30 without restriction.

<Third Embodiment>
In the third embodiment, when the restriction is applied to the communication of the general terminal, the restriction is applied to the communication of the general terminal on condition that the attribution request from the administrator terminal is not received within a predetermined period. It is an embodiment. The basic configuration of the communication system and relay device of the third embodiment is the same as that of the communication system 2 and relay device 10 of the second embodiment, and will be described with reference to FIG.

<Configuration example of relay device>
As in the second embodiment, the storage unit 11 of the relay device 10 according to the third embodiment stores an administrator terminal management table 11A, a communication restriction management table 11B, and a communication mode management table 11C. However, as shown in FIG. 10, the communication mode management table 11C of the third embodiment further stores a “waiting time for switching to the restriction mode” as compared to the second embodiment.

  In the control device 150 of the relay device 10 according to the third embodiment, the table management unit 150B sets the “restricted mode” even when the “current communication mode” in the communication mode management table 11C is set to “restricted mode”. After the “switching standby time” has elapsed, the “restricted mode” is set. For this reason, when there is an attribution request from the administrator terminal 20 in the “waiting time for switching to the restricted mode”, the “current communication mode” in the communication mode management table 11C is set to the “unrestricted mode”. Is not set to the “restricted mode”.

  Thereby, in the control device 150 of the relay device 10 according to the third embodiment, the restriction control unit 51 receives an attribution request from the administrator terminal 20 within a predetermined period when the restriction is applied to the communication of the general terminal 30. The restriction is applied to the communication of the general terminal 30 on the condition that it is not.

<Operation example of relay device>
The processing operation of the relay device 10 according to the third embodiment having the above configuration will be described. FIG. 11 is a flowchart illustrating an example of a communication mode switching phase process executed by the relay device according to the third embodiment. In the flowchart of FIG. 11, the same steps as those in the flowchart of FIG. 7 are denoted by the same reference numerals, and the description thereof is omitted.

  When there is no administrator terminal that is “belonging to” (step S37 NO), the table management unit 150B starts a timer (step S61). The expiration value of this timer is “waiting time for switching to the restricted mode”.

  Next, the table management unit 150B determines whether or not the timer has expired (step S62).

  When the timer has not expired (step S62 NO), the table management unit 150B determines whether or not an attribution request has been received (step S63). When the attribution request has not been received (step S63 NO), the processing step returns to step S62.

  When the attribution request is received (YES in step S63), the table management unit 150B determines whether the request source is an administrator terminal (step S64). When the request source is not the administrator terminal (NO in step S64), the processing step returns to step S62.

  When the request source is the administrator terminal (step S64 YES), the table management unit 150B updates the “current attribution state” of the administrator terminal in the administrator terminal management table 11A to “being attributed” (step S65). ).

  Next, the table management unit 150B sets “current communication mode” in the communication mode management table 11C to “unrestricted mode” (step S66).

  On the other hand, when the timer expires before receiving the attribution request from the administrator terminal (step S62), the table management unit 150B sets “current communication mode” in the communication mode management table 11C to “restricted mode” ( Step S67).

  As described above, according to the third embodiment, in the control device 150, when the restriction is applied to the communication of the general terminal 30, the restriction control unit 51 receives the attribution request from the administrator terminal 20 within a predetermined period. The restriction is applied to the communication of the general terminal 30 on the condition that it is not.

  Thereby, in the case where the administrator terminal 20 is reattached immediately after the attribution terminal is released (for example, when the administrator terminal is restarted in the local network, when the administrator terminal is connected to another network for a moment, etc.), the general terminal It can be avoided that the restriction is applied to 30 communications. Thereby, it can avoid that the convenience of the user using the general terminal 30 falls.

<Other embodiments>
<1> In the first to third embodiments, the restriction on the communication of the general terminal 30 has been described as blocking the communication with the communication partner apparatus (server 70). It is not limited to. For example, the restriction on the communication of the general terminal 30 may be “permit communication with the communication partner device itself, but always restrict the communication speed to a certain speed or less”, or “predetermined cumulative communication Communication is possible without limitation until the upper limit of the amount is reached, but communication may be cut off when the upper limit is exceeded.

  <2> The control devices 50 and 150 of the first to third embodiments may have the following hardware configuration. FIG. 12 is a diagram illustrating an example of a hardware configuration of the control device.

  In FIG. 12, the control device 200 includes a processor 201 and a memory 202.

  The restriction control unit 51, the communication control unit 150A, and the table management unit 150B of the control devices 50 and 150 described in the first to third embodiments read and execute a program stored in the memory 202 by the processor 201. Is realized.

1, 2 Communication system 10 Communication device (relay device)
DESCRIPTION OF SYMBOLS 11 Memory | storage part 11 Memory | storage part 11A Administrator terminal management table 11B Communication restriction management table 11C Communication mode management table 13 Communication interface 20 Communication apparatus (manager terminal)
30 Communication device (general terminal)
50, 150 Control device 51 Restriction control unit 60 Wide area network 70 Server 150A Communication control unit 150B Table management unit

Claims (7)

A control device that controls a restriction on communication of a first communication device that is a restriction target,
When the third communication device is in an unaffiliated state with respect to the second communication device, a restriction is applied to the communication of the first communication device, while when the third communication device is in an belonging state, the first communication device A restriction control unit that applies non-limitation to communication of the communication device;
A control device comprising: When there are a plurality of the third communication devices, the restriction control unit restricts the communication of the first communication device when at least one of the plurality of third communication devices is in the belonging state. Apply,
The control device according to claim 1. A receiving unit for receiving a request signal transmitted from the first communication device and requesting establishment of communication with the communication partner device;
When the restriction is applied to the communication of the first communication device, the restriction control unit executes control to transmit an error response as a response signal to the request signal on behalf of the communication partner device.
The control device according to claim 1 or 2. When the restriction is applied to the communication of the first communication device, the restriction control unit communicates with the first communication device on the condition that it does not receive an attribution request from the third communication device within a predetermined period. Apply restrictions to
The control device according to any one of claims 1 to 3. As a restriction mode set in the control device, a first mode for switching restriction and non-restriction on communication of the first communication device according to a non-affiliation state and an attachment state of the third communication device, the first communication device A second mode in which a restriction is always applied to communication, and a third mode in which an unrestriction is always applied to communication of the first communication device;
The control device according to claim 1. A control method performed by a control device that controls restriction on communication of a first communication device that is a restriction target,
When the third communication device is in an unaffiliated state with respect to the second communication device, a restriction is applied to the communication of the first communication device, while when the third communication device is in an belonging state, the first communication device Apply unrestricted communication to communication devices,
Control method. In the control device that controls the restriction on the communication of the first communication device to be restricted,
When the third communication device is in an unaffiliated state with respect to the second communication device, a restriction is applied to the communication of the first communication device, while when the third communication device is in an belonging state, the first communication device Apply unrestricted communication to communication devices,
A control program that executes processing.

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