JP2004133723A - Service providing method, system and program using terminal with assignment of dynamic identification address - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accommodate frequent changes in the IP address of a terminal device, dispense with the acquisition of a domain name of own terminal device, and enable access to the terminal device even from another terminal device that does not know the IP address of own terminal device, by dispensing with a dynamic DNS service for correlating an IP address. <P>SOLUTION: A public server device 20 secures a homepage area in advance, and in own terminal device 30, file creating means 33 create a file hyperlinked to a homepage of an IP address of own terminal device 30 dynamically assigned by an address answering server device 10, and transmitting means 36 transmit the file to the public information homepage area 21 in the public server device 20. Only by following the link in a public homepage in the public server device 20, another terminal device 40 can access own terminal device 30. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, the other terminal devices connected to the own terminal device whose identification address is dynamically changed by a network such as the Internet do not need to know the identification address of the own terminal device at that time, and perform the same procedure. This is a technology that enables access to the own terminal device, and in particular, acquires an identification address of the own terminal device from an address reply server device, generates a file including link information to the identification address, and generates the generated file. By transmitting to the public server device and publishing, the other terminal device acquires the file on the public server device and accesses according to the link information in the file, so that the other terminal device can obtain the file of its own terminal device at that time. A service providing method by a terminal to which a dynamic identification address is assigned so that the terminal can be accessed even if the identification address is known. Backup unit, and to their program.
[0002]
[Prior art]
2. Description of the Related Art In recent years, with the spread of an always-on Internet environment, it has become possible to always provide services on personally owned terminal devices. For example, executing a Web server on a personally owned terminal device to provide a service for providing information may be mentioned.
However, an IP address used as an identification address on the Internet is often dynamically assigned from a network provider to a personally owned terminal device. Therefore, when a terminal device provides a service using a dynamically assigned IP address, it is necessary to announce the IP address.
[0003]
In the related art, a technique using Dynamic DNS (Domain Name System) has been used to solve this problem. In DynamicDNS, the terminal device associates the IP address of the terminal device with the domain name and transmits the corresponding information to the DynamicDNS server, so that the corresponding information is recorded in the DynamicDNS server, and the corresponding information is further stored in another DNS. Propagate to the server.
A user who wants to access the terminal device specifies the domain name of the terminal device and inquires of DynamicDNS to obtain an IP address corresponding to the domain, thereby enabling access to the terminal device.
[0004]
However, the point that the terminal device needs to register the correspondence information in the DynamicDNS server, the point that it is necessary to assign a domain name to the terminal device in advance, and the correspondence information is propagated from the registered DNS server to another DNS server. If the IP address of the terminal device is frequently changed, if the IP address information of the terminal device is acquired from another DNS server other than the registered Dynamic DNS server, the latest IP address cannot be acquired. There is a problem.
[0005]
[Non-patent document 1]
S. Thomson, two outsiders, "Dynamic Updates in the Domain Name System (DNS UPDATE)", April 1997, Internet Rules (original text), Internet <URL: // ring. asahi-net. or. jp / pub / doc / RFC / rfc2136. txt>
[Non-patent document 2]
S. Thomson, et al., "Dynamic Update of Domain Name System (DNS Update)" April 1997, Internet Rules (with Japanese translation), Internet <URL: http: // www5d. bigrobe. ne. jp / ~ stssk / rfc2136j. html>
[0006]
[Problems to be solved by the invention]
As described above, in the conventional technology, when a service is provided by a terminal device having a dynamically assigned IP address, the terminal device is registered in a Dynamic DNS service that associates a domain name with an IP address. In this case, it is necessary to assign a domain name to the terminal device in advance, the terminal device needs to register the correspondence information at any time in the Dynamic DNS server, and the correspondence information is transmitted from the registered DNS server to other DNS servers. When the IP address of the terminal device is frequently changed, if the IP address information of the terminal device is obtained from another DNS server other than the registered Dynamic DNS server, the latest IP address is obtained. The inability to do so was a problem.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, eliminate the need for a Dynamic DNS service for associating an IP address, and cope with a case where the IP address of a terminal device is frequently changed. Service providing method and device by a terminal to which a dynamic identification address capable of accessing the own terminal device even from another terminal device that does not need to acquire the To provide a program.
[0008]
[Means for Solving the Problems]
The terminal device of the present invention obtains a dynamic identification address, creates a file in which the identification address is included in link information for providing a service, and registers the file in a public server to provide a service. provide.
[0009]
That is, in the present invention, a home page area is reserved in the public server device in advance, and the terminal device creates a file hyperlinked to the home page of the IP address of the terminal device dynamically allocated, and at an appropriate timing. By transmitting the file to the public information homepage area of the public server device installed in advance by the terminal device, it becomes possible to access the terminal device only by following the link of the homepage published by the public server device.
This eliminates the need for a Dynamic DNS service that associates an IP address. Thereby, the problem that cannot be dealt with when the IP address of the terminal device is frequently changed and the problem that it is necessary to obtain the domain name of the terminal device are solved.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a system configuration diagram showing an embodiment of the present invention. A method for providing a service in a terminal device to which a dynamic identification address is assigned and a configuration of the terminal device will be described.
The system shown in FIG. 1 includes a terminal device 30 connected to the Internet, an address reply server device 10, a public server device 20, and a back end device 40. The own terminal device 30 to which the identification address is dynamically assigned is a device that provides a service to another terminal device 40 that does not know the dynamically assigned IP address.
[0011]
The public server device 20 is assigned a fixed IP address or domain name, and is recorded in response to a request from the other terminal device 40 and a public information recording area 21 for recording a file transmitted from the own terminal device 30. And a public service providing means 22 such as a WWW service for transmitting a file.
[0012]
The own terminal device 30 is assigned a dynamic IP address, and makes an inquiry to the address reply means 11 of the address reply server device 10 at an appropriate occasion, and the IP address assigned to the own terminal device 30 Address confirmation means 31 for confirming the password, file creation means 33 for creating a file in which “keyword” in the template file created in advance is replaced with “IP address of own terminal”, and public server device 20. A file transmitting unit 36 for transmitting the created file and a service providing unit 37 for providing a service in response to access from another terminal device 40 are provided. In addition, it has an execution trigger issuing unit 32 for notifying the own address confirmation unit 31 of the execution trigger, a template file 34 for sending a read file to the file creation unit 33, and a page file 35 for storing the created file. ing.
[0013]
The address reply server device 10 is assigned a fixed IP address or a domain name, and assigns an identification address of the terminal device viewed from the address reply server device 10 to a terminal device that inquires the address reply server device 10. An address reply means 11 for providing a reply service is provided.
[0014]
FIG. 2 is a diagram illustrating an operation procedure of a service providing method by a terminal to which a dynamic identification address is assigned according to an embodiment of the present invention.
From the left, the address response means 11 of the address response server device, the own address confirmation means 31 of the own terminal device, the execution trigger execution means 32, the file creation means 33, the template file 34, the page file 35, the file transmission means 36, the service provision means 37 The public information recording area 21 of the public server device, the public service providing means 22, and the service providing means 37 for other terminal devices are arranged.
The processing procedure includes a step of obtaining an IP address in STEP1, a step of creating a file including an identification address of STEP2, and a step of registering the file in STEP3 on a public server and providing a service.
[0015]
First, the processing of (1) to (3) in STEP 1 will be described.
The self-address confirmation means 32 of the self-terminal device 30 makes a request to the address reply means 11 of the address reply server device 10 ((2)) upon execution of a preset timer or user input ((1)). The address reply server device 10 responds with the confirmed IP address of the terminal device 10 ([3]).
For example, when a global IP address of 202.24.244.24 is dynamically assigned to the own terminal device 30 in advance, the address reply server device 10 assigns an address of 202.24.244.24 to the own terminal device 30. Is acquired, and the result of the acquisition is returned to the terminal device 30.
[0016]
The reason for acquiring the IP address of the own terminal device 30 from the address reply server device 10 is that the own terminal device 30 has a local IP address, a router or a network device is installed in front of the own terminal device 30, and a NAT (Network Address Translator) is used. If the terminal device 30 can be accessed from outside using the IP address masquerading function or the IP address, the terminal device 30 cannot acquire an externally accessible IP address assigned to the terminal device 30. It is.
Therefore, if the own terminal device 30 can acquire an IP address that can access the own terminal device 30 from the outside, there is no need to use this mechanism.
[0017]
FIG. 3 is a diagram showing an example of a template file and an example of a page file.
The processing of (4) to (8) in STEP 2 of FIG. 2 will be described using the example of FIG.
The file creation means 33 acquires the IP address of the own terminal device 30 from the own address confirmation means 31 ((4)), reads the template file 34 ((5)), and replaces the character string portion such as HOSTNAME with the own terminal. Replace with the IP address of the device 30. Then, the file obtained by replacing the template file 34 is stored as a page file 35 ([6]). The page file 35 has a content in which a hyperlink for accessing the service providing means 37 on the terminal device 30 called the WWW service is described. Next, the generated page file 35 is read by the file transmission means 36 ((7)) and transmitted to the public server device 20 ((8)).
[0018]
Specifically, it reads the page file 35 of its own terminal device 30 and transmits it to the public information recording area (public HDD of the WWW server, etc.) 21 of the public server device 20 using a file transfer protocol such as FTP. The public server device 20 provides a public service (such as a WWW service), and the terminal devices 30 and 40 can access the public server device 20 based on predetermined address information (URL). It is possible.
[0019]
Next, the flow from when the other terminal device 40 accesses the own terminal device 30 in FIG. 2 will be described along (3) to (12) in STEP3.
The other terminal device 40 accesses the public server device 20 based on the URL for accessing the page file transmitted by the own terminal device 30 in the previous section ([9]).
The public server device 20 reads the page file ((10)) and transmits it to another terminal device ((11)). The other terminal device 40 can access the service providing unit 37 on the own terminal device 30 by accessing the hyperlink destination described in the page file ((12)).
[0020]
In addition, by periodically changing the IP address of the own terminal device, there is an effect of preventing an act of directly accessing the own terminal device without going through the designated homepage.
By using the above apparatus and procedure, it is possible to provide a service to a terminal apparatus to which a dynamic identification address is assigned even to another terminal apparatus that does not know the identification address.
By converting the processing procedure of FIG. 2 into a program and storing the program in a recording medium such as a CD-ROM, the recording medium can be carried and moved to an arbitrary place. The present invention can be easily realized by mounting the program on a computer at an arbitrary place, loading a program from a recording medium, and causing the computer to execute the program.
[0021]
【The invention's effect】
As described above, according to the present invention, without acquiring a new domain name and without using Dynamic DNS, only by following the hyperlink of the homepage published by the external public server device, It becomes possible to access the own terminal device even from another terminal device that does not know the IP address.
This makes it possible to easily provide a service such as WWW on the terminal device using the dynamically assigned IP address. Further, by periodically changing the IP address of the own terminal device, there is an effect of preventing an act of directly accessing the own terminal device without going through the designated homepage.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of a service providing method by a terminal to which a dynamic identification address is assigned according to an embodiment of the present invention.
FIG. 2 is a diagram showing a processing procedure of the system in FIG. 1;
FIG. 3 is a diagram showing an example of a template file and an example of a page file used in FIG. 1;
[Explanation of symbols]
10 ... address reply server device, 11 ... address reply means,
20 public server device 21 public information recording area
22: public service providing means, 30: own terminal device,
31: own address confirmation means, 32: execution timing execution means,
33: file creation means, 34: template file,
35: page file, 36: file transmitting means, 37: service providing means,
40 ... Other terminal device.

Claims (8)

In a method for providing a service of a terminal device connected to a network and assigned a dynamic identification address,
The own terminal device acquires a dynamic identification address according to a predetermined procedure,
Create a file in which the identification address is included in the link information for service provision,
Sending the file to the public server, registering with the public server,
A dynamic identification address is assigned, characterized in that another terminal device referring to the file of the public server provides a service for access from another terminal device generated based on the link information of the file. Service providing method for a terminal device provided. In a method for providing a service of a terminal device connected to a network and assigned a dynamic identification address,
The own terminal device has in advance a dynamic identification address that cannot be identified by the own terminal device obtained in a predetermined procedure,
In response to a request from the own terminal device, the address reply server confirms an address already assigned to the own terminal device,
Create a file in which the identification address is included in the link information for service provision,
Sending the file to the public server, registering with the public server,
A dynamic identification address is assigned, characterized in that another terminal device referring to the file of the public server provides a service for access from another terminal device generated based on the link information of the file. Service providing method for a terminal device provided. 3. A service providing method for a terminal device to which a dynamic identification address is assigned according to claim 1 or 2,
The own terminal device replaces the keyword of the template file and creates a file in which the identification information is included in the link information to provide a service. Delivery method. In the service providing device of the own terminal device connected to the network and assigned a dynamic identification address,
Identification address acquisition means for acquiring a dynamically assigned identification address in a predetermined procedure,
File creation means for creating a file containing link information to a service on the terminal device;
File transmission means for transmitting the created file to the public server when the identification address of the own terminal device is changed;
A service providing unit for providing a service in response to access from another terminal device by registering the file in a public server, the service providing device being provided by a terminal to which a dynamic identification address is assigned. In the service providing device of the own terminal device connected to the network and assigned a dynamic identification address,
Own address confirming means for inquiring the address reply server of a dynamically assigned identification address that can be identified from the address reply server but cannot be identified only by the own terminal device;
File creation means for creating a file containing link information to a service on the terminal device;
File transmission means for transmitting the created file to the public server when the identification address of the own terminal device is changed;
A service providing unit for providing a service in response to access from another terminal device by registering the file in a public server, the service providing device being provided by a terminal to which a dynamic identification address is assigned. A service providing device of the terminal device to which the dynamic identification address according to claim 4 or 5 is assigned,
The own terminal device creates a file including link information to a service on the own terminal device by replacing “keyword” in the template file created in advance with “identification address of the own terminal device”. A service providing device provided by a terminal to which a dynamic identification address is assigned. Requesting the computer of the terminal device to confirm the identification address to the address response server, receiving the confirmation response from the address response server, reading the template file, reading the file obtained by replacing the template file. A service providing program of the terminal device for executing a procedure of saving as a page file, a procedure of reading the page file into a file transmitting unit, and a procedure of transmitting the page file to a public server. A computer-readable recording medium on which the service providing program of the terminal device according to claim 7 is recorded.

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