JP5056622B2 - Computer program for installing in a communication device an application that causes the function execution device to execute the function - Google Patents

Description

  The present invention relates to a computer program for installing, in a communication device, an application that causes a function execution device to execute a function. The present invention also relates to a function execution system including a function execution device and a communication device. Note that the term “function execution device” in this specification is to be interpreted in the broadest sense, and is a concept including all devices capable of executing a function. Examples of the “function execution device” include a printer, a multi-function device, a server, and a PC. Further, the term “communication device” in the present specification should be interpreted in the broadest sense, and is a concept including any device that is communicably connected to the function execution device. Examples of the “communication device” include a server and a PC.

  An application that causes a function execution device to execute a function is widely installed in a communication device. For example, Patent Document 1 below discloses that a printer driver application is installed in a PC communicably connected to a printer. The PC can send a print function execution instruction to the printer by activating the printer driver application. The printer can execute the printing function according to the printing function execution instruction transmitted from the PC.

JP 2005-33779 A

  There exists a function execution device capable of executing a plurality of functions. For example, some printers have not only a printing function, but also a status information transmission function for transmitting own status information in response to an external instruction, a setting change function for changing settings in response to an external instruction, etc. There is something that can be done. In order for the function execution device to execute these various functions, it is necessary to install a plurality of applications corresponding to these functions in the communication device.

  For example, in the case of TCP / IP, communication can be performed using 65535 port numbers. In a function execution device that executes a plurality of functions in response to a function execution instruction from the outside, a port number is set for each function. The application installed in the communication device transmits a function execution instruction including a port number set for the function corresponding to the application. The function execution device executes a function for which a port number included in the function execution instruction is set. By communicating a function execution instruction including a port number, the function execution device can specify which function should be executed.

  In the function execution device, each of the plurality of port numbers can be set to either an open state or a closed state. When a function execution instruction including a closed port number is received, the function execution apparatus does not execute the function according to the function execution instruction. Therefore, in order for the function execution device to execute a function in accordance with a function execution instruction from the outside, it is necessary to keep the port number set for the function open. However, if there is an open port number, there is a possibility that unauthorized access will be performed using that port number. It is preferable that only necessary port numbers are set in an open state and unnecessary port numbers are set in a closed state.

  The present specification provides a technique that can increase the security of a function execution device by closing unnecessary port numbers.

The present invention can execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and is included in a function execution instruction from the outside. A computer program for installing the plurality of applications in a communication device that is communicably connected to a function execution device having a characteristic of executing a function for which a port number is set, and is installed in the communication device In the computer, the following process, that is, a selection permission process that allows a user to select one or more functions from the plurality of functions, and an installation process that installs an application corresponding to the function selected by the user And among the plurality of port numbers set for the plurality of functions, A port specifying process for specifying a non-selected port number that is a port number other than the selected port number set for the selected function, and closing the non-selected port number specified in the port specifying process. A port setting instruction transmission process for transmitting a port closing instruction to be transmitted to the function execution apparatus, and each of the plurality of applications includes a function execution instruction including a port number set for a function corresponding to the application Is an application for transmitting to the function execution device.
The present invention can execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and is included in a function execution instruction from the outside. A computer program for installing the plurality of applications in a communication device that is communicably connected to a function execution device having a characteristic of executing a function for which a port number is set, and is installed in the communication device In the computer, the following process, that is, a selection permission process that allows a user to select one or more applications from among the plurality of applications, an installation process that installs an application selected by the user, and the plurality of processes Of the multiple port numbers set for the A port specifying process for specifying a non-selected port number that is a port number other than the selected port number set for the function corresponding to the application selected by the application, and the non-selected port number specified by the port specifying process Port setting instruction transmission processing for transmitting a port close instruction to close the function to the function execution device, and each of the plurality of applications has a port number set for the function corresponding to the application. Is an application for transmitting a function execution instruction including a message to the function execution device.
In one form of the present specification, a computer program for installing a plurality of applications in a communication device that is communicably connected to a function execution device is disclosed. The computer program may be stored in a medium, or may be downloaded from an external network such as the Internet. The function execution device can execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a function execution instruction is received from the outside. Each feature has the function of executing the function for which the included port number is set. The above-mentioned “plurality of functions corresponding to a plurality of applications” does not only mean that one function exists for each application. A plurality of functions corresponding to one application may exist, and one function corresponding to two or more applications may exist. Further, only one port number may be set for one function, or two or more port numbers may be set for one function. Note that the term “function” can be restated as “service”.

  Each of the plurality of applications transmits a function execution instruction including a port number set for a function corresponding to the application to the function execution apparatus. The function execution device executes a function set for the port number included in the function execution instruction. In this specification, a port number is set for a function, and a relationship in which an application that transmits a function execution instruction including the port number exists is expressed as “function corresponding to the application”. The term “function corresponding to an application” can be rephrased as “function executed according to an application”.

  The computer program causes a computer mounted on the communication device to execute a selection permission process, an installation process, and a port close instruction transmission process. The selection permission process allows the user to select one or more functions from the plurality of functions. In the installation process, an application corresponding to the function selected by the user is installed. In the port close instruction transmission process, a port close instruction for instructing to close a port number not set for the function selected by the user is transmitted to the function execution apparatus. In addition, the order of each said process is not specifically limited. For example, the installation process may be executed prior to the port close instruction transmission process, or the port close instruction transmission process may be executed prior to the installation process (may be executed simultaneously). For example, if the port close instruction transmission process is executed after the installation process is executed, even if the installation fails or the user issues a cancel instruction during the installation process, the consistency between the installed application and the device status Is obtained.

  The function execution device can execute the function F1, the function F2, and the function F3, the port number P1 is set for the function F1, and the port number P2 is set for the function F2. The operation of the above computer program will be described by taking the case where the port number P3 is set for F3 as an example. In addition, in this example, it is assumed that there is an application A1 corresponding to the function F1, an application A2 corresponding to the function F2, and an application A3 corresponding to the function F3. The user of the communication device can select an arbitrary function from the three functions F1, F2, and F3. When the functions selected by the user are F1 and F2 (when F3 is not selected), at least two applications A1 and A2 are installed in the communication device (the application A3 may be installed, Need not be installed). Further, in this case, a port close instruction for instructing to close the port number P3 is transmitted to the function execution apparatus. As a result, the function execution device closes the port number P3. The port number P3 not set for the functions F1 and F2 selected by the user can be closed. That is, it is possible to close the port number P3 set for the function F3 considered not to be executed by the function execution device because it has not been selected by the user. For this reason, the security of the function execution device can be increased.

  In the case of the above example, the port close instruction may instruct to close only the port number P3, or instruct to close all the port numbers other than the port numbers P1 and P2. It may be a thing. When the function execution device can execute a function that does not correspond to any of the plurality of applications, and the port number P4 is set for the function, the port close instruction is sent to the port number P1. , P2, and P4 may be instructed to close all port numbers.

  For example, when the function execution device closes all the port numbers in the initial state, the port close instruction described above is the port numbers P1, P2 set for the functions F1, F2 selected by the user. May be instructed to open. In this case, the port numbers P1 and P2 are opened, and the port number P3 not set for the functions F1 and F2 selected by the user is kept closed. This case is also equivalent to transmitting the above port close instruction.

  The computer program may cause the computer to further execute a user identification information inquiry process and a user identification information setting process. The user identification information inquiry process inquires of the function execution device whether or not the user identification information is set in the function execution device. The user identification information setting process sets the user identification information in the function execution device by transmitting the user identification information to the function execution device on condition that the user identification information is not set in the function execution device. In this case, for the user corresponding to the user identification information set in the function execution device, the computer program selects one or more functions from all of the plurality of functions in the selection permission process. And the installation process and the port close instruction transmission process may be executed by the computer.

  According to said structure, the user corresponding to the user identification information set to the function execution apparatus can select arbitrary functions from all the functions. The port number not set for the function selected by the user is closed by the function execution device.

A method for determining whether or not the user is “a user corresponding to the user identification information set in the function execution apparatus” will be exemplified below. Methods other than those exemplified below may be used.
(1) The user is allowed to input user identification information to the communication device. User identification information is transmitted from the communication device to the function execution device. The function execution device determines whether or not the user identification information set in itself matches the user identification information transmitted from the communication device. The function execution device transmits information indicating whether or not the two match each other to the communication device. In this method, authentication of user identification information is performed by a function execution device.
(2) The user is allowed to input user identification information to the communication device. The function execution device transmits user identification information set to itself to the communication device. The communication apparatus determines whether the user identification information input to the communication apparatus matches the user identification information transmitted from the function execution apparatus. In this method, authentication of user identification information is performed by a communication device.
(3) The user identification information may be one type of information or a combination of a plurality of types of information. For example, the user identification information may be a combination of a user ID and a password.

  Further, the computer program may cause the computer to further execute a port confirmation process. The port confirmation process confirms information related to an open port number and / or information related to a closed port number in the function execution apparatus. In this case, the computer program, for a user who does not correspond to the user identification information set in the function execution device, is a function corresponding to the opened port number confirmed in the port confirmation process in the selection permission process. One or more functions may be selected from and the installation process may be executed by the computer. In this case, the computer does not have to execute the port close instruction transmission process.

  According to said structure, the user corresponding to the user identification information set to the function execution apparatus can be handled as what is called an administrator. That is, only the administrator can select an arbitrary function from all functions, and can close a port number that is not set for the function selected by the administrator. A user other than the administrator can select a function only from the functions selected by the administrator. Since the port number closed by the function execution device according to the administrator's selection is not opened by a user other than the administrator, it is possible to prevent the port not intended by the administrator from being opened.

  The computer program may cause the computer to further execute an instruction inquiry process. The instruction inquiry process inquires of the function execution apparatus whether or not a port close instruction has been transmitted to the function execution apparatus in the past. In this case, the computer program may cause the computer to execute the selection permission process, the installation process, and the port close instruction transmission process on the condition that the port close instruction has not been transmitted to the function execution apparatus in the past. Further, the computer program sets the port number set for the selection permission process, the installation process, and the function selected by the user on the condition that the port close instruction has been transmitted to the function execution apparatus in the past. You may make a computer perform the port open instruction | indication transmission process which transmits the port open instruction | indication which instruct | indicates opening to a function execution apparatus.

  According to the above configuration, even when there is a port number that has been closed in the past according to the selection of another user, the user selects the function for which the port number is set, and sets the port number. Can be opened.

A specific method of the port open instruction transmission process is exemplified below. Methods other than those exemplified below may be used.
(1) The communication device (computer) determines whether the port number corresponding to the function selected by the user in the selection permission process (hereinafter referred to as “user-selected port number”) is open. Inquire. As a result, the communication apparatus knows the closed port number among the user-selected port numbers. In the port open instruction transmission process, an instruction is given to open a closed port number among user-selected port numbers.
(2) The communication device (computer) inquires the function execution device about the current state (open state or closed state) of each port number. As a result, the communication device knows the opened port number and the closed port number, and knows the closed port number among the user-selected port numbers. In the port open instruction transmission process, an instruction is given to open a closed port number among user-selected port numbers.
(3) The communication device (computer) does not make any inquiry of (1) and (2) above. In the port open instruction transmission process, an instruction to open the user-selected port number is given. If the closed port number is included in the user-selected port number transmitted from the communication device, the function execution device opens the port number.

  In the above technique, in the selection permission process, the user is allowed to select one or more functions from a plurality of functions. This can be paraphrased as “allowing the user to select one or more applications from a plurality of applications”. In this case, in the installation process, an application selected by the user is installed (applications not selected by the user may be installed or not installed). In the port close instruction transmission process, a port close instruction for instructing to close a port number not set for the function corresponding to the application selected by the user is transmitted to the function execution apparatus. In the case of the above example, a port close instruction for instructing to close the port number P3 not set for the functions F1 and F2 corresponding to the applications A1 and A2 selected by the user is transmitted to the function execution apparatus. Even with this configuration, the security of the function execution device can be increased.

  In the configuration in which the user selects an application, the computer program may cause the computer to further execute a port number specifying process. In the port number specifying process, for each of a plurality of applications, the application selected by the user from the port number list in which the application and the port number set for the function corresponding to the application are associated. Identify unrelated port numbers. In this case, in the port close instruction transmission process, a port close instruction for instructing to close the port number specified by the port number specifying process may be transmitted to the function execution device.

The present invention can execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and is included in a function execution instruction from the outside. A function execution system comprising a function execution device having each characteristic of executing a function for which a port number is set, and a communication device connected to the function execution device in a communicable manner. Selection permitting means for allowing the user to select one or more functions from among functions, installation means for installing an application corresponding to the function selected by the user, and selected function information regarding the function selected by the user And / or non-selected function information related to a function not selected by the user is transmitted to the function execution device. Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device. A function information receiving means for receiving selected function information and / or non-selected function information transmitted from the communication device when an application corresponding to the function selected by the user of the communication device is installed in the communication device; In accordance with the selected function information and / or the non-selected function information received by the function information receiving means, the function is set for the function selected by the user among the plurality of port numbers set for the plurality of functions. Port identification method that identifies unselected port numbers that are port numbers other than the selected port number When, and a port close means for closing the non-selected port number identified by the port identification means.
The present invention can execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and is included in a function execution instruction from the outside. A function execution system comprising a function execution device having each characteristic of executing a function for which a port number is set, and a communication device connected to the function execution device in a communicable manner. Selection permitting means for allowing a user to select one or more applications from among applications, installation means for installing an application selected by the user, selected application information and / or user regarding the application selected by the user About applications not selected by Application information transmitting means for transmitting the selected application information to the function execution device, and each of the plurality of applications executes a function execution instruction including a port number set for a function corresponding to the application The function execution device is an application for transmitting to the device, and the function execution device selects and / or deselects the selected application information transmitted from the communication device when an application corresponding to the function selected by the user is installed in the communication device. A plurality of port numbers set for the plurality of functions according to application information receiving means for receiving application information and selected application information and / or non-selected application information received by the application information receiving means. Of these, the port specifying means for specifying a non-selected port number that is a port number other than the selected port number set for the function corresponding to the application selected by the user, and the non-selected port specified by the port specifying means. And a port closing means for closing the selected port number.
One form of technology disclosed in this specification can also be expressed as a system including a function execution device and a communication device. The communication apparatus includes a selection permission unit, an installation unit, and a function information transmission unit. The selection permission unit allows the user to select one or more functions from a plurality of functions. The installation unit installs an application corresponding to the function selected by the user. The function information transmitting means transmits the selected function information regarding the function selected by the user and / or the non-selected function information regarding the function not selected by the user to the function execution device. The function execution device includes function information receiving means and port closing means. The function information receiving unit receives the selected function information and / or the non-selected function information transmitted from the communication device. The port closing means closes the port number not corresponding to the function selected by the user according to the selected function information and / or the non-selected function information received by the function information receiving means.

  According to said structure, the port number set with respect to the function considered not to be performed by the function execution apparatus since it was not selected by the user can be closed. For this reason, the security of the function execution device can be increased.

  In the above system as well, “the user selects one or more functions from a plurality of functions” and “the user selects one or more applications from a plurality of applications”. Can be paraphrased.

  A single function execution device for configuring the above system is also a new technology. By using this function execution device, the above system can be constructed.

Here, some of the features of the techniques described in the following embodiments are summarized.
(Mode 1) One function may correspond to one port number. There may be both an application corresponding to one function and an application corresponding to two or more functions.

(Mode 2) The computer program may cause a computer mounted on the communication device to execute processing for searching for a function execution device connected to the network. The selection permission process may be executed on condition that there is a function execution device connected to the network.

(Mode 3) On condition that the user identification information is not set in the function execution device, the computer program sets whether the user identification information is set in the function execution device in the computer mounted on the communication device. You may perform the process which permits selection. When a positive selection is made by the user, the user identification information may be allowed to be input by the user, and the input user identification information may be transmitted to the function execution device. Note that the user identification information may be information input by the user, or may be information set in advance in the communication device (for example, an ID set in the communication device).

(Mode 4) On the condition that the user identification information is set in the function execution device, the computer program selects whether or not to authenticate the user identification information to the computer mounted on the communication device. You may perform the process which accept | permits. When a positive selection is made by the user, the user identification information may be allowed to be input by the user, and the input user identification information may be transmitted to the function execution device. The function execution device may execute authentication of the user identification information transmitted from the communication device and transmit an authentication result to the communication device. The user may be allowed to select one or more functions (or applications) from all functions (or applications) on the condition that a positive authentication result is obtained. The user must select one or more functions (or applications) from the functions (or applications) corresponding to the open port number in the function execution device on the condition that a negative authentication result is obtained. May be acceptable.

(First embodiment)
Embodiments will be described with reference to the drawings. FIG. 1 shows a multi-function device system 2 of this embodiment. The multi-function device system 2 includes a PC 10 and a multi-function device 40. The PC 10 and the multi-function device 40 are communicably connected. Although only one multi-function device 40 is shown in FIG. 1, a plurality of multi-function devices may exist.

(PC configuration)
The PC 10 includes an operation unit 12, a display unit 14, a media storage unit 16, a storage unit 20, a control unit 28, a network interface 30, and the like. The operation unit 12 includes a mouse, a keyboard, and the like. The user can input various instructions and information to the PC 10 by operating the operation unit 12. The display unit 14 can display various information.

  The media storage unit 16 can store media 18 such as CDs and DVDs. Information (such as a program) stored in the medium 18 is read by a medium reading unit (not shown) mounted on the medium storage unit 16. The medium 18 of this embodiment is used for installing a plurality of applications on the PC 10.

  FIG. 2 schematically shows programs stored in the medium 18. The medium 18 stores a plurality of applications 70 to 78. Each of the applications 70 to 78 is an application for causing the multi-function device 40 to execute various functions. Specifically, the PC print application 70 is an application for transmitting a print instruction to the multi-function device 40. The multi-function device 40 executes a print function in accordance with a print instruction. The scan application 72 is an application for transmitting a scan instruction to the multi-function device 40. The multi-function device 40 executes the scan function according to the scan instruction. The status check application 74 is an application for transmitting a status check instruction to the multi-function device 40. The multi-function device 40 acquires its own status information according to the status check instruction, and executes a status check function that transmits the acquired status information.

  The panel operation application 76 is an application for transmitting a panel operation instruction to the multi-function device 40. As will be described in detail later, the multi-function device 40 has an operation panel 42 (see FIG. 1). When the user operates the operation panel 42, the multi-function device 40 executes processing (for example, processing for displaying predetermined information and processing for changing setting information (printing resolution, scanning resolution, etc.)) according to the user's instruction. The panel operation instruction is an instruction for remotely operating the operation panel 42. That is, when the multi-function device 40 receives a panel operation instruction, the multi-function device 40 performs the same processing as when the operation panel 42 is operated. Hereinafter, the function executed by the multi-function device 40 in accordance with the panel operation instruction is referred to as a “panel operation function”. That is, the multi-function device 40 executes the panel operation function in accordance with the panel operation instruction.

  The multi-function device management application 78 is an application for transmitting various management instructions to the multi-function device 40. The management instruction according to the present embodiment includes a management instruction transmitted using SNMP (Simple Network Management Protocol) and a firmware update instruction. The management instruction transmitted using SNMP includes an instruction for acquiring information from the multi-function device 40 (GET command) and an instruction for changing the setting information of the multi-function device 40 (SET command). It is out. The multi-function device 40 acquires information according to the GET command and executes a function of transmitting the acquired information. The multi-function device 40 executes a function of changing its own setting information in accordance with the SET command. Hereinafter, a function executed by the multi-function device 40 in accordance with a management instruction transmitted using SNMP is referred to as an “SNMP function”. That is, the multi-function device 40 executes the SNMP function in accordance with a management instruction transmitted using SNMP. Further, the multi-function device 40 executes a firmware update function for downloading a program for updating its own program from a predetermined address on the Internet in accordance with the firmware update instruction.

  In the present embodiment, the multi-function device 40 executes various functions in accordance with instructions transmitted using the applications 70 to 78. Hereinafter, a relationship between an application and a function executed by the multi-function device 40 in accordance with an instruction transmitted using the application is expressed as “function corresponding to the application”. For example, the PC print application 70 corresponds to the PC print function, and the status check application 74 corresponds to the status check function. As described above, the multi-function device 40 executes a plurality of functions (SNMP function and firmware update function) in accordance with the management instruction transmitted using the multi-function device management application 78. Therefore, the multi-function device management application 78 supports the SNMP function and the firmware update function.

  As will be described in detail later, the multi-function device 40 has a port number set for each of a plurality of functions. Each application 70 to 78 transmits an instruction including a port number set for a function corresponding to the application to the multi-function device 40. For example, in the multi-function device 40, the port number “515” is set for the print function. Accordingly, the PC print application 70 transmits a print instruction including the port number “515” to the multi-function device 40. For example, the port number “20XXX” is set for the scan function. Accordingly, the scan application 72 transmits a scan instruction including the port number “20XXX” to the multi-function device 40. A port number is set for each of the other functions of the multi-function device 40. For example, the port number “161” is set for the status check function, and the port number “22XXX” is set for the panel operation function. For the SNMP function, the same port number “161” as that for the status check function is set. A port number “23XXX” is set for the firmware update function. Since various instructions transmitted from the PC 10 to the multi-function device 40 include a port number, the multi-function device 40 specifies which function is to be executed based on the port number included in the received instruction. can do.

  The medium 18 stores a program 80 for installing each of the applications 70 to 78 in the PC 10 and other programs 84. Details of processing executed by the PC 10 according to the program 80 will be described in detail later. The program 80 includes a port number list 82. The port number list 82 includes a plurality of combination information 90 to 98. Each combination information 90 to 98 is information in which application specifying information 100 that specifies an application and a port number 102 to be included in an instruction transmitted by the application are associated with each other. For example, in the combination information 90, application specifying information “PCPrint” specifying the PC print application 70 is associated with a port number “515” to be included in the print instruction transmitted by the application 70. In the other combination information 92 to 98, “NetScan” corresponds to the scan application 72, “StatusChecker” corresponds to the status check application 74, and “RemPanel” corresponds to the panel operation application 76. “MFPAdm” corresponds to the multi-function device management application 78. As described above, the multi-function device management application 78 supports two functions, the SNMP function and the firmware update function. Therefore, in the combination information 98, two port numbers “161” and “23XXX” are described in association with “MFPAdm”.

  The storage unit 20 illustrated in FIG. 1 includes a hard disk 22, a ROM 24, a RAM 26, and the like. The hard disk 22 can store various information. The hard disk 22 can store, for example, applications 70 to 78 installed from the medium 18. The ROM 24 stores various programs executed by the control unit 28. For example, the ROM 24 stores a program for processing the program 80 stored in the medium 18. The RAM 26 can store data and the like generated in the process in which the control unit 28 executes processing. The network interface 30 is connected to the LAN line 66. The LAN line 66 is connected to the multi-function device 40. The PC 10 can communicate with the multi-function device 40 via the network interface 30 and the LAN line 66.

(Configuration of multi-function device)
The multi-function device 40 includes an operation panel 42, a display unit 44, a printing unit 46, a scanner unit 48, a storage unit 50, a control unit 62, a network interface 64, and the like. The operation panel 42 has a plurality of keys. The user can input various instructions and information to the multi-function device 40 by operating the operation panel 42. As described above, the panel operation application 76 (see FIG. 2) for remotely operating the operation panel 42 exists. If the panel operation application 76 is used in the PC 10, the multi-function device 40 can execute the same processing (panel operation function) as when the operation panel 42 is operated without the user operating the operation panel 42. it can. The display unit 44 can display various information.

  The printing unit 46 is configured by, for example, an ink jet type or laser type printing mechanism. When a print instruction transmitted using the PC print application 70 (see FIG. 2) is received by the multi-function device 40, the control unit 62 described later drives the printing unit 46. Thereby, the printing unit 46 prints on the print medium based on the print instruction. The scanner unit 48 generates image data by scanning a document placed on a document placing table (not shown). When the multi-function device 40 receives a scan instruction transmitted using the scan application 72 (see FIG. 2), the control unit 62 drives the scanner unit 48. Thereby, the scanner unit 48 scans the document based on the scan instruction.

  The storage unit 50 includes a program storage area 52 and other storage areas 54. The program storage area 52 stores a program to be executed by the control unit 62. The programs stored in the program storage area 52 include an instruction corresponding program for executing processing in response to an instruction from an external device such as the PC 10. As described above, the multi-function device 40 executes the print function, scan function, status check function, panel operation function, SNMP function, and firmware update function. Port numbers are set for each of these functions. When receiving the instruction from the external device, the instruction corresponding program causes the control unit 62 to execute the function in which the port number included in the instruction is set.

  The storage area 54 can store administrator information 56. What information the manager information 56 is will be described later. In addition, the storage area 54 can store an installation flag 58, a port number table 60, and the like. The installation flag 58 and the port number table 60 are not information used in this embodiment. Therefore, the storage area 54 of the present embodiment does not necessarily need to be configured to store the installation flag 58 and the port number table 60.

  The control unit 62 executes various processes according to the program stored in the program storage area 52. The contents of the process executed by the control unit 62 will be described in detail later. The network interface 64 is connected to the LAN line 66. The LAN line 66 is connected to the PC 10. The multi-function device 40 can communicate with the PC 10 via the network interface 64 and the LAN line 66.

(Processing executed by the PC according to the media program)
Next, the contents of processing executed by the control unit 28 of the PC 10 according to the installation execution program 80 of the medium 18 will be described. 3 and 4 show a flowchart of this process.

  The control unit 28 searches the device group connected to the LAN line 66 for a device that executes the function in accordance with an instruction transmitted using the applications 70 to 78 (S10). The control unit 28 determines whether a device has been found as a result of the search (S12). Specifically, the control unit 28 broadcasts a predetermined command in S10. The multi-function device 40 is programmed to send a response to the predetermined command. When the response to the broadcast is received, the control unit 28 determines YES in S12. When a plurality of multi-function devices are connected to the LAN line 66, a plurality of responses are received. Also in this case, YES is determined in S12. If YES in S12, the processes after S14 are executed. Note that the processing from S14 onward is executed for the multi-function device selected by the user from the devices that sent the response. For example, when the multi-function device 40 and another multi-function device send a response, the device names of all multi-function devices that sent the response are displayed, and one of the displayed device names is selected by the user. Let When the user selects a device name corresponding to the multi-function device 40, the processing after S14 is executed for the multi-function device 40. If NO in S12, the installation process ends.

  In the present embodiment, the following description will be continued on the assumption that the processing after S14 is executed for the multi-function device 40. In S <b> 14, the control unit 28 determines whether communication setting information is set in the multi-function device 40. Specifically, the control unit 28 determines whether or not an IP address is set for the multi-function device 40. In the case of NO here, the control unit 28 transmits the IP address to be set to the multi-function device 40 to the multi-function device 40 (S16). For example, the user can input an IP address to be set in the multi-function device 40 to the PC 10 by operating the operation unit 12. The control unit 28 transmits the IP address input by the user to the multi-function device 40. The multi-function device 40 receives the IP address transmitted from the PC 10 and sets (stores) the IP address as its own IP address. When S16 ends, the process proceeds to S18. If YES in S14, S16 is skipped and the process proceeds to S18.

  In S <b> 18, the control unit 28 transmits an administrator information request to the multi-function device 40. When receiving the administrator information request, the multi-function device 40 is programmed to transmit predetermined information indicating whether or not the administrator information 56 is stored in the storage area 54 to the PC 10. Based on the predetermined information from the multi-function device 40, the control unit 28 determines whether or not an administrator exists (whether or not the administrator information 56 is stored in the storage area 54). S20). In the case of YES here, the process proceeds to S40 in FIG. On the other hand, if NO in S20, the process proceeds to S22.

  In S22, the control unit 28 displays a selection screen. This selection screen includes a character string that asks the user whether or not to become an administrator. If the user wants to become an administrator, the first operation is performed by the user. If the user does not want to become an administrator, a second operation is performed by the user. The control unit 28 determines which of the first operation and the second operation has been executed (S24). When the user performs the first operation, the control unit 28 executes an administrator installation process (S26). On the other hand, when the user performs the second operation, the control unit 28 proceeds to S50 in FIG. 4 and executes non-administrator installation processing. The administrator installation process and the non-administrator installation process will be described in detail later.

  In S40 of FIG. 4, the control unit 28 displays a selection screen. This selection screen includes a character string for asking the user whether or not to perform administrator authentication. If the user desires to perform administrator authentication, a third operation is performed by the user. If the user does not want to perform administrator authentication, a fourth operation is performed by the user. The control unit 28 determines which of the third operation and the fourth operation has been executed (S42). When the user performs the third operation, the process proceeds to S44. On the other hand, when the user performs the fourth operation, the control unit 28 executes non-administrator installation processing (S50).

  In S44, the control unit 28 displays an administrator authentication screen. This administrator authentication screen includes an area for inputting an ID and an area for inputting a password. The user can input the ID and password. The control unit 28 transmits the ID and password input by the user to the multi-function device 40 (S46). The multi-function device 40 compares the ID and password transmitted from the PC 10 in S46 with the ID and password of the administrator information 56 stored in its own storage area 54, and whether or not they match. Is programmed to transmit predetermined information indicating the above to the PC 10. The control unit 28 determines whether or not the administrator authentication is successful based on the predetermined information from the multi-function device 40 (S48). In the case of YES here, the process proceeds to S26 of FIG. 3, and the control unit 28 executes the manager installation process. On the other hand, if NO in S48, the process proceeds to S50, and the control unit 28 executes non-administrator installation processing.

(Administrator installation process)
Next, the contents of the manager installation process in S26 of FIG. 3 will be described. FIG. 5 shows a flowchart of the manager installation process. The control unit 28 displays an administrator registration screen (S70). FIG. 6 shows an example of the administrator registration screen 110. The administrator registration screen 110 has an area 112 for inputting an ID, an area 114 for inputting a password, and an area 116 for inputting a contact address. The user can input a desired ID and password in the areas 112 and 114. The user can also input his / her contact information (e.g., email address, telephone number, name, etc.) in area 116. The areas 112 and 114 are indispensable input items, and the area 116 is an arbitrary input item. When at least the ID and password are input by the user, the process proceeds to S72.

  In S72, the control unit 28 displays an application selection screen. FIG. 7 shows an example of the application selection screen 120 displayed in S72. The application selection screen 120 includes the names of the applications 70 to 78. The user can determine which application to install on the PC 10 according to the application selection screen 120. If one or more applications are selected by the user, the process proceeds to S74.

  In S74, the control unit 28 installs the application selected in S72. Specifically, the control unit 28 reads the application selected in S 72 from the medium 18 and stores it in the hard disk 22. Next, the control unit 28 reads the port number list 82 (S76). The control unit 28 specifies a necessary port number and an unnecessary port number based on the port number list 82 (S78). Specifically, the control unit 28 specifies a port number corresponding to the application selected in S72 as a necessary port number, and specifies a port number not corresponding to the application selected in S72 as an unnecessary port number. . For example, when the PC print application 70 and the multi-function peripheral management application 78 are selected in S72, the control unit 28 specifies the port numbers “515”, “161”, and “23XXX” as necessary port numbers (FIG. 2 combination information 90, 98). In addition, the control unit 28 identifies the port numbers “20XXX” and “22XXX” as unnecessary port numbers.

  Next, the control unit 28 sends a request to the multi-function device 40 to open the necessary port number and instruct to close the unnecessary port number (S80). In the case of the above example, the port numbers “515”, “161”, and “23XXX” are opened, and a request instructing to close the port numbers “20XXX” and “22XXX” is transmitted to the multi-function device 40. As a result, the multi-function device 40 sets the port numbers “515”, “161”, and “23XXX” to an open state (in other words, can be referred to as an ON state), and closes the port numbers “20XXX” and “22XXX”. To a state (which can be called an OFF state).

  In the present embodiment, in the multi-function device 40, all port numbers are open in the initial state. When the multi-function device 40 receives the request transmitted from the PC 10 in S80, the multi-function device 40 is instructed to close and open the port numbers instructed to be closed (in the above example, “20XXX” and “22XXX”). The port numbers (“515”, “161”, and “23XXX” in the above example) remain open. The multi-function device 40 may maintain an open state for other port numbers (for example, “24XXXX”, etc.) not designated by the request transmitted from the PC 10 in S80, but in order to improve security. It is preferable to close. In this case, the multi-function device 40 preferably maintains the open state for the port numbers that are determined to be used regardless of the applications 70 to 78.

  Subsequently, the control unit 28 transmits the administrator information input in S70 to the multi-function device 40 (S82). In S70, the ID and password are always input, and the contact information is arbitrarily input. When only the ID and password are input in S <b> 70, the control unit 28 transmits only the ID and password to the multi-function device 40. When the ID, password, and contact information are input in S <b> 70, the control unit 28 transmits the ID, password, and contact information to the multi-function device 40. Upon receiving the administrator information transmitted from the PC 10 in S82, the multi-function device 40 stores the administrator information in the storage area 54 (see reference numeral 56 in FIG. 1). As a result, the administrator information is set in the multi-function device 40. When S82 ends, the manager installation process ends.

(Non-administrator installation process)
Next, the contents of the non-administrator installation process in S50 of FIG. 4 will be described. FIG. 8 shows a flowchart of the non-administrator installation process. The control unit 28 checks the status (open state or closed state) of each port number of the multi-function device 40 (S100). Specifically, the control unit 28 transmits a request to the multi-function device 40 so as to return the status of each port number. As a result, the multi-function device 40 returns the status of each port number to the PC 10.

  When S100 ends, the control unit 28 reads the port number list 82 (S102). Next, the control unit 28 specifies the application specifying information corresponding to the open port number based on the status of each port number obtained in S100 and the port number list 82 read in S102, and closes it. The application specifying information corresponding to the state port number is specified (S104). For example, it is assumed that the port numbers “20XXX” and “22XXX” are closed by the multi-function device 40 in the processing of S80 of FIG. In this case, “PCPrint”, “StatusChecker”, and “MFPAdm” corresponding to the port numbers “515”, “161”, and “23XXX” are specified as the application specifying information corresponding to the open port number. Further, “NetScan” and “RemPanel” corresponding to the port numbers “20XXX” and “22XXX” are specified as the application specifying information corresponding to the closed port number.

  Subsequently, the control unit 28 transmits an administrator information contact address request to the multi-function device 40 (S106). When receiving the administrator information contact request, the multi-function device 40 determines whether a contact is set. Specifically, the multi-function device 40 determines whether or not the contact information is included in the administrator information 56 stored in the storage area 54. When the contact information is set, the multi-function device 40 returns the contact information to the PC 10. On the other hand, when the contact information is not set, the multi-function device 40 returns information indicating that the contact information is not set to the PC 10.

  Based on the reply from the multi-function device 40, the control unit 28 determines whether or not a contact is set in the multi-function device 40 (S108). In the case of YES here, the control unit 28 displays a predetermined screen (S110). FIG. 9 shows an example of the screen 130 displayed in S110. The screen 130 includes the name of the application that cannot be used and information indicating the contact information of the administrator. The name of the application that cannot be used is information specified as application specifying information corresponding to the closed port number in S104. The information indicating the contact information of the administrator is contact information returned in response to the administrator information contact request transmitted in S106. On the other hand, if NO in S108, S110 is skipped and the process proceeds to S112.

  In S112, the control unit 28 displays an application selection screen (S112). FIG. 10 shows an example of the application selection screen 140 displayed in S112. The application selection screen 140 includes names of applications that can be used, and does not include names of applications that cannot be used. The name of the application that can be used is information specified as application specifying information corresponding to the open port number in S104. The user can determine which application to install on the PC 10 according to the application selection screen 140. When one or more applications are selected by the user, the control unit 28 installs the applications selected in S112 (S114). As a result, the non-administrator installation process ends. In the non-administrator installation process, even if the port number is unnecessary for the application selected in S112, the port number corresponding to the application installed by the administrator installation process is an instruction to close the port number. Not performed.

(Processes executed by the PC according to the application)
The user can execute an operation for starting an application (for example, the PC print application 70) installed in the PC 10. In a state where the application is activated, the user can cause the multi-function device 40 to execute a function corresponding to the application by executing a predetermined operation. Specifically, when the predetermined operation is executed, the control unit 28 transmits an instruction including a port number corresponding to the application to the multi-function device 40. For example, in the case of the PC print application 70, a print instruction including the port number “515” is transmitted to the multi-function device 40. The multi-function device 40 can identify the print function execution instruction based on the port number “515” included in the print instruction. The multi-function device 40 executes a printing function.

  According to the multi-function device system 2 of the present embodiment, only the application selected by the user is installed in the PC 10. In the multi-function device 40, the port number corresponding to the application selected by the user is opened, and the port number not corresponding to the application selected by the user is closed. Since port numbers that are not executed by the multi-function device 40 are closed, the security of the multi-function device 40 can be enhanced.

  Further, according to the multi-function device system 2 of the present embodiment, the administrator user can select a desired application from all the applications. On the other hand, users other than the administrator can select only from applications corresponding to the opened port numbers. The port number closed by the multi-function device 40 according to the administrator's selection is prohibited from being opened by a user other than the administrator.

(Modification 1 of the first embodiment)
In the first embodiment, the user (administrator) of the PC 10 selects an application to be installed. In the multi-function device 40, the port number corresponding to the application selected by the user is opened, and the port number not corresponding to the application selected by the user is closed. This can be paraphrased as follows. That is, the user (administrator) of the PC 10 selects a function to be executed by the multi-function device 40. In the multi-function device 40, the port number corresponding to the function selected by the user is opened, and the port number not corresponding to the function selected by the user is closed. At this time, the port number list 82 is associated with functions (for example, PC print function, scan function, status check function, panel operation function, SNMP function, firmware update function) and port numbers. The port number corresponding to the function selected by the user is read from the port number list 82, and a close instruction for port numbers other than the port numbers necessary for the function is transmitted. The user may select an application, specify a function executed by the application, and specify a port number corresponding to the function.

  The multi-function device management application 78 is compatible with both the SNMP function and the firmware update function. In the first embodiment, the user (administrator) of the PC 10 may be configured to individually select the SNMP function and the firmware update function. In this case, each of the SNMP function and the firmware update function is displayed on the application selection screen 120 in FIG. That is, the user can select an arbitrary function from the six functions. For example, when only the SNMP function corresponding to the port number “161” is selected, the control unit 28 instructs to open the port number “161” and other port numbers (“515”, “23XXX”). Etc.) may be transmitted to the multi-function device 40. In this case, only the SNMP function can be executed by the multi-function device 40 using the multi-function device management application 78. However, since “23XXX” corresponding to the firmware update function is closed, the multi-function device 40 cannot execute the firmware update function.

(Modification 2 of the first embodiment)
In S80 of FIG. 5, the PC 10 may not transmit a request for instructing to close unnecessary port numbers (the installation execution program 80 may be configured to execute such processing). That is, in S80 of FIG. 5, the PC 10 may transmit a request instructing only to open a necessary port number. In this case, the multi-function device 40 may open a necessary port number (that is, keep the open state) and close all other port numbers.

(Modification 3 of the first embodiment)
In S80 of FIG. 5, the PC 10 may not transmit a request for instructing to close a necessary port number (the installation execution program 80 may be configured to execute such processing). That is, in S80 of FIG. 5, the PC 10 may transmit a request instructing only to close unnecessary port numbers. In this case, the multi-function device 40 may close unnecessary port numbers and open all other port numbers (that is, keep the open state).

(Modification 4 of the first embodiment)
In the multi-function device 40, all port numbers may be closed in the initial state. In this case, when the multi-function device 40 receives the request transmitted from the PC 10 in S80 of FIG. 5, the multi-function device 40 opens the port number instructed to be opened, and maintains the closed state for other port numbers. Also good.

  Any of the methods of the first embodiment, the modified example 2, the modified example 3 and the modified example 4 described above is “a request for instructing to close a port number not corresponding to the application (or function) selected by the user”. Is transmitted to the multi-function device 40.

(Modification 5 of the first embodiment)
In S100 of FIG. 8, the PC 10 acquires the statuses of all the port numbers of the multi-function device 40. Alternatively, only the port number opened in the multi-function device 40 may be acquired by the PC 10 in S100 of FIG. For example, the PC 10 may send a request to send back the opened port number to the multi-function device 40 (the installation execution program 80 may be configured to execute such processing). ). In S100 of FIG. 8, only the port number closed in the multi-function device 40 may be acquired by the PC 10. For example, the PC 10 may send a request for returning a closed port number to the multi-function device 40 (the installation execution program 80 may be configured to execute such processing). ). If either the opened port number or the closed port number is known in the multi-function device 40, the PC 10 can execute the process of S104.

(Second embodiment)
Subsequently, a second embodiment will be described. The multi-function device 40 of this embodiment can store an installation flag 58 (see FIG. 1). The installation flag 58 is a flag indicating a value of “0” or “1”. In the initial state, the installation flag 58 is set to “0”. Note that the multi-function device 40 of this embodiment does not necessarily need to store the administrator information 56 and the port number table 60. In this embodiment, the installation execution program 80 for the medium 18 is different from that of the first embodiment.

(Processing executed by the PC according to the media program)
The contents of processing executed by the control unit 28 of the PC 10 according to the installation execution program 80 of this embodiment will be described. FIG. 11 shows a flowchart of this process.

  S210 to S216 are the same as S10 to S16 in FIG. In S <b> 218, the control unit 28 transmits an installation flag request to the multi-function device 40. When receiving the install flag request, the multi-function device 40 returns the value (“0” or “1”) of the install flag 58 in the storage area 54 to the PC 10. The control unit 28 determines whether or not the value of the installation flag 58 returned from the multi-function device 40 is “1” (S220). In the case of NO (that is, when the value of the installation flag 58 is “0”), the control unit 28 executes the initial installation process (S222). On the other hand, in the case of YES in S220, the control unit 28 executes the installation process for the second and subsequent times (S224).

(Initial installation process)
FIG. 12 shows a flowchart of the initial installation process. S240 to S248 are the same as S72 to S80 in FIG. By performing S248, the multi-function device 40 closes the port number not corresponding to the application selected by the user. Thereby, the security of the multi-function device 40 is improved. When S248 is completed, the control unit 28 transmits the installed information to the multi-function device 40 (S250). Upon receiving the installed information, the multi-function device 40 changes the installation flag 58 from “0” to “1”.

(Installation process for the second and subsequent times)
FIG. 13 shows a flowchart of the installation process for the second and subsequent times. S270 to S276 are the same as S72 to S78 in FIG. 5 (S240 to S246 in FIG. 12). In S270, the user can select a desired application from all the applications 70 to 78. In S276, the control unit 28 may specify a port number that does not correspond to the application selected by the user in S270, but may not specify it. When S276 is completed, the control unit 28 checks the status (open state or closed state) of each port number of the multi-function device 40 (S278). This process is the same as S100 of FIG.

  Subsequently, the control unit 28 determines whether or not all port numbers corresponding to the application selected by the user in S270 are open (S280). The port number corresponding to the application selected by the user in S270 is specified in S276. Whether or not the port number is open is determined based on the information obtained in S278. For example, the applications selected by the user in S270 are the PC print application 70 (port number “515”) and the scan application 72 (port number “20XXX”), and the port number “515” is opened in the information obtained in S278. If the port number “20XXX” is in the closed state, the control unit 28 determines NO in S282. In this case, the control unit 28 transmits to the multi-function device 40 a request for opening a closed port number among the port numbers corresponding to the application selected by the user in S270 (S282). In the case of the above example, the control unit 28 transmits a request instructing to open the port number “20XXX” to the multi-function device 40. When receiving the request transmitted from the PC 10 in S282, the multi-function device 40 opens the port number according to the request. As a result, the second and subsequent installation processes are completed. If YES in S280, the control unit 28 skips S282 and ends the installation process for the second and subsequent times.

  Also in this embodiment, in the multi-function device 40, the port number corresponding to the application selected by the user is opened, and the port number not corresponding to the application selected by the user is closed. The security of the multi-function device 40 can be increased. Further, according to the present embodiment, the user can select a desired application from all the applications 70 to 78 even if there is a port number closed by another user's selection.

(Modification 1 of the second embodiment)
Also in the second embodiment, any one of the first to fifth modifications of the first embodiment can be applied.

(Modification 2 of the second embodiment)
S278 and S280 in FIG. 13 may be omitted. In this case, the control unit 28 may transmit a request instructing to open a necessary port number in S282. The multi-function device 40 may specify a closed port number among necessary port numbers included in the request transmitted from the PC 10 in S282 and open the specified port number.

(Third embodiment)
Subsequently, a third embodiment will be described. The multi-function device 40 of this embodiment can store a port number table 60 (see FIG. 1). The port number table 60 has the same contents as the port number list 82 in FIG. That is, the application and the port number are associated with each other. Note that the multi-function device 40 of this embodiment does not necessarily need to store the installation flag 58. In this embodiment, the installation execution program 80 for the medium 18 is different from that of the first embodiment.

(Processing executed by the PC according to the media program)
The contents of processing executed by the control unit 28 of the PC 10 according to the installation execution program 80 of this embodiment will be described. 3 and 4 are the same as those in the first embodiment. However, in this embodiment, the contents of the administrator installation process executed in S26 of FIG. 3 are different from those in the first embodiment.

(Administrator installation process)
FIG. 14 shows a flowchart of the administrator installation process of this embodiment. S300 to S304 are the same as S70 to S74 in FIG. Moreover, S306 is the same as S82 of FIG. When S306 ends, the control unit 28 transmits application specifying information for specifying the application selected by the user in S300 to the multi-function device 40 (S308). For example, when the PC print application 70 and the scan application 72 are selected by the user in S300, the control unit 28 transmits a character string “PCPrint” and a character string “NetScan” to the multi-function device 40.

(Processes executed by multi-function devices)
Next, processing executed by the control unit 62 of the multi-function device 40 will be described. FIG. 15 shows a flowchart of processing executed by the control unit 62. Note that FIG. 15 does not show all the processes executed by the multi-function device 40, but shows only a part of the processes executed by the multi-function device 40.

  The control unit 62 monitors reception of the administrator information transmitted from the PC 10 in S306 of FIG. 14 (S320). In the case of YES here, the control unit 62 stores the administrator information (ID and password (may include contact information)) received in S320 in the storage area 54 (see FIG. 1) (S322). On the other hand, if NO in S320, S322 is skipped.

  The control unit 62 monitors reception of the application specifying information transmitted from the PC 10 in S308 of FIG. 14 (S324). In the case of YES here, the control unit 62 reads the port number table 60 (S326). Next, the control unit 62 specifies a necessary port number and an unnecessary port number (S328). For example, when the application specifying information received in S324 includes the character string “PCPrint”, the control unit 62 sets the port number “corresponding to“ PCPrint ”in the port number table 60 read in S326. "515" is identified as the required port number. Further, the control unit 62 specifies a port number (such as “20XXX”) other than the port number “515” as an unnecessary port number.

  In the multi-function device 40 of this embodiment, all port numbers are open in the initial state (however, all port numbers may be closed). The control unit 62 maintains the necessary port number specified in S328 in an open state, and closes the unnecessary port number specified in S328 (S330). Thereby, the process of the multi-function device 40 ends.

  In this embodiment, a request for instructing to close unnecessary port numbers is not transmitted from the PC 10 to the multi-function device 40. Instead, only the application specifying information is transmitted from the PC 10 to the multi-function device 40. The multi-function device 40 specifies a port number to be closed based on the application specifying information transmitted from the PC 10, and closes the specified port number. Also in this embodiment, the port number not corresponding to the application selected by the user is closed. The security of the multi-function device 40 can be increased.

(Modification 1 of the third embodiment)
The third embodiment may be configured such that the user can select a function to be executed by the multi-function device 40 as in the first modification of the first embodiment. In this case, in the port number table 60 of FIG. 1 and the port number list 82 of FIG. 2, the function specifying information and the port number may be associated with each other. For example, for each of the PC print function, scan function, status check function, and panel operation function, the same character string as the application specific information shown in the combination information 90 to 96 in FIG. 2 may be adopted as the function specific information. Good. Further, the character string “SNMP” may be adopted as the function specifying information of the SNMP function, and the character string “FirmUpdate” may be adopted as the function specifying information of the firmware update function. In the present modification, the function specifying information of the function selected by the user is transmitted to the multi-function device 40 in S308 of FIG. The multi-function device 40 receives the function specifying information in S324, and specifies a necessary port number and an unnecessary port number based on the function specifying information. Also by this modification, the same effect as the third embodiment can be obtained. Further, since the multi-function device 40 has a port number set for each of a plurality of functions in order to realize each function, the port number corresponding to the function selected by the user using this setting content. May be specified.

(Modification 2 of the third embodiment)
In S328 of FIG. 15, the multi-function device 40 may not specify unnecessary port numbers. That is, in S328 of FIG. 15, the multi-function device 40 may specify only a necessary port number. In this case, the multi-function device 40 may open a necessary port number and close all other port numbers.

(Modification 3 of the third embodiment)
In S328 of FIG. 15, the multi-function device 40 may not specify a necessary port number. That is, in S328 of FIG. 15, the multi-function device 40 may specify only unnecessary port numbers. In this case, the multi-function device 40 may close unnecessary port numbers and open all other port numbers.

(Modification 4 of the third embodiment)
In S308 of FIG. 14, the PC 10 may transmit application specifying information of an application not selected by the user to the multi-function device 40 (even if the installation execution program 80 is configured to execute such processing). Good). In S308 of FIG. 14, the PC 10 may transmit the application specifying information of the application selected by the user and the application specifying information of the application not selected by the user to the multi-function device 40 (such as this The installation execution program 80 may be configured to execute the process). Even when configured as in the present modification, the multi-function device 40 can specify a necessary port number and an unnecessary port number.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. For example, the installation execution program 80 may be downloaded to the PC 10 from an external network such as the Internet. In addition, when specifying the port number, the port number is specified based on the character string of the application or function. However, the present invention is not limited to this, and for example, a number is associated with each application or function. The port number may be specified by the correspondence between the number and the port number.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

The configuration of the multi-function device system is shown. An example of the storage content of a medium is shown typically. The flowchart of an installation process is shown. FIG. 4 is a flowchart continued from FIG. 3. FIG. The flowchart of the installation process for administrators is shown. An example of an administrator registration screen is shown. An example of an application selection screen is shown. The flowchart of the non-administrator installation process is shown. An example of a notification screen is shown. An example of an application selection screen is shown. The flowchart of an installation process is shown (2nd Example). The flowchart of an initial installation process is shown. The flowchart of the installation process after the second time is shown. The flowchart of the installation process for administrators is shown (3rd Example). The flowchart of the process of a multi-function device is shown.

Explanation of symbols

2: Multifunctional system 10: PC
16: Media accommodation unit 18: Media 20: Storage unit 28: Control unit 40: Multi-function device 50: Storage unit 56: Administrator information 58: Installation flag 60: Port number table 62: Control units 70 to 78: Application 80: Installation execution program 82: Port number list 90-98: Combination information 100: Application specifying information 102: Port number

Claims (11)

It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set A computer program for installing the plurality of applications in a communication device that is communicably connected to a function execution device having each characteristic of executing the function being performed,
In the computer mounted on the communication device, the following processing, that is,
A selection permission process for allowing a user to select one or more functions from the plurality of functions;
An installation process for installing an application corresponding to the function selected by the user;
Port identification processing for identifying a non-selected port number that is a port number other than the selected port number set for the function selected by the user among the plurality of port numbers set for the plurality of functions. When,
A port setting instruction transmission process for transmitting a port close instruction for instructing to close the non-selected port number specified in the port specifying process to the function execution device; and
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device. The computer has the following processing:
A user identification information inquiry process for inquiring of the function execution device whether or not the user identification information is set in the function execution device;
On the condition that the user identification information is not set in the function execution device, the user identification information setting process for setting the user identification information in the function execution device is further executed by transmitting the user identification information to the function execution device. ,
The user corresponding to the user identification information set in the function execution device is allowed to select one or more functions from all of the plurality of functions in the selection permission process, and the installation process The computer program according to claim 1, wherein the computer executes the port specifying process and the port setting instruction transmission process. The computer has the following processing:
The port execution process for confirming the information on the opened port number and / or the information on the closed port number in the function execution device is further executed.
For users who do not correspond to the user identification information set in the function execution device, one or more functions from among the functions corresponding to the opened port numbers confirmed in the port confirmation process in the selection permission process The computer program according to claim 2, wherein the computer program is allowed to be selected and the installation process is executed by the computer. The computer has the following processing:
Further execute instruction inquiry processing for inquiring of the function execution device whether or not a port close instruction has been transmitted to the function execution device in the past,
On the condition that a port close instruction has not been transmitted to the function execution device in the past, the selection permissible process, the installation process, the port specifying process, and the port setting instruction transmission process are executed by the computer,
On the condition that a port close instruction has been transmitted to the function execution device in the past, the selection permission process, the installation process, and opening the port number set for the function selected by the user The computer program according to claim 1, wherein the computer is caused to execute port open instruction transmission processing for transmitting a port open instruction to instruct the function execution apparatus. In the port specifying process, further, the selected port number set for the function selected by the user among the plurality of port numbers set for the plurality of functions is specified,
In the port setting instruction transmission process, a port open instruction for instructing to open the selected port number specified in the port specifying process is further transmitted to the function execution device.
The computer program according to claim 1, wherein the computer program is a computer program. It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set A computer program for installing the plurality of applications in a communication device that is communicably connected to a function execution device having each characteristic of executing the function being performed,
In the computer mounted on the communication device, the following processing, that is,
A selection permission process for allowing a user to select one or more applications from the plurality of applications;
An installation process to install the application selected by the user;
Among the plurality of port numbers set for the plurality of functions, an unselected port number that is a port number other than the selected port number set for the function corresponding to the application selected by the user is specified. Port identification processing to
A port setting instruction transmission process for transmitting a port close instruction for instructing to close the non-selected port number specified in the port specifying process to the function execution device; and
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device. In the port specifying process, for each of the plurality of applications, the non-selected port number is obtained from a port number list in which the application is associated with a port number set for a function corresponding to the application. The computer program according to claim 6 , wherein the computer program is specified. It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set A function execution system comprising a function execution device having each characteristic of executing the function being performed and a communication device connected to the function execution device in a communicable manner,
The communication device
A selection permission means for allowing the user to select one or more functions from the plurality of functions;
An installation means for installing an application corresponding to the function selected by the user;
A function information transmitting means for transmitting to the function execution device selected function information related to a function selected by the user and / or non-selected function information related to a function not selected by the user;
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device,
Function execution device
Function information receiving means for receiving selected function information and / or non-selected function information transmitted from the communication device when an application corresponding to the function selected by the user of the communication device is installed in the communication device;
According to the selected function information and / or non-selection function information received by the function information reception unit, among the plurality of port numbers that have been set for the plurality of functions, it is set for the selected function by the user A port identifying means for identifying a non-selected port number that is a port number other than the selected port number;
And a port closing means for closing the non-selected port number specified by the port specifying means . It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set It is a function execution device that has each characteristic of executing the function being performed,
The user is allowed to select one or more functions from among the plurality of functions, installs an application corresponding to the function selected by the user, and selects function information and / or user related to the function selected by the user. An interface that is communicably connected to a communication device that transmits non-selected function information related to the function not selected by the function execution device;
When an application corresponding to a function selected by a user is installed in the communication device, a plurality of functions set for the plurality of functions according to selected function information and / or non-selected function information received by the interface. of the port number, and the port identifying means for identifying the non-selected port number is a port number other than the selected port number that is set for the selected function by the user,
Port closing means for closing the non-selected port number specified by the port specifying means ,
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device. It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set A function execution system comprising a function execution device having each characteristic of executing the function being performed and a communication device connected to the function execution device in a communicable manner,
The communication device
A selection permission means for allowing a user to select one or more applications from the plurality of applications;
An installation means for installing the application selected by the user;
Application information transmitting means for transmitting selected application information related to an application selected by the user and / or non-selected application information related to an application not selected by the user to the function execution device;
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device,
Function execution device
Application information receiving means for receiving selected application information and / or non-selected application information transmitted from the communication device when an application corresponding to the function selected by the user is installed in the communication device;
For the function corresponding to the application selected by the user among the plurality of port numbers set for the plurality of functions according to the selected application information and / or the non-selected application information received by the application information receiving means. A port identifying means for identifying a non-selected port number that is a port number other than the selected port number set in
And a port closing means for closing the non-selected port number specified by the port specifying means . It is possible to execute a plurality of functions corresponding to a plurality of applications, a port number is set for each of the plurality of functions, and a port number included in a function execution instruction from the outside is set It is a function execution device that has each characteristic of executing the function being performed,
Allows the user to select one or more applications from the plurality of applications, installs the application selected by the user, and is not selected by the user for selected application information regarding the application selected by the user An interface that is communicably connected to a communication device that transmits non-selected application information about the selected application to the function execution device;
When the application corresponding to the function selected by the user is installed in the communication device, the plurality of functions set for the plurality of functions according to the selected application information and / or the non-selected application information received by the interface. A port specifying means for specifying a non-selected port number that is a port number other than the selected port number set for the function corresponding to the application selected by the user ,
Port closing means for closing the non-selected port number specified by the port specifying means ,
Each of the plurality of applications is an application for transmitting a function execution instruction including a port number set for a function corresponding to the application to the function execution device.

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