Control apparatus, communication control method executed by the control apparatus, communication control program controlling the control apparatus, and data processing system

• US 20060212554A1
• Filed: 03/10/2006
• Published: 09/21/2006
• Est. Priority Date: 03/18/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Shouno, Hirioki
• Granted Patent: US 8,706,848 B2
• Time in Patent Office: Days
• US Class Current: 709/221
• CPC Class Codes: H04L 41/08 Configuration management of networks or network elements address allocation H04L61/50
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0866 Checking the configuration
• CPC Class Codes: H04L 61/2575 using address mapping retrieval, e.g. simple traversal of user datagram protocol through session traversal utilities for NAT [STUN]

Abstract

A control apparatus is provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network. The control apparatus notifies the data processing apparatus of a change of setting information that is set for network communications. Then, the control apparatus rewrites information involved in received data according to the changed setting information, when the data processing apparatus transmits data to be transmitted to a destination apparatus connected to the second network under a condition that the data processing apparatus is not yet operating based on the changed setting information.

Claims

1. A control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the control apparatus comprising:

a changing unit configured to change setting information that is set for network communications;

a notifying unit configured to notify the data processing apparatus of the setting information changed by the changing unit; and

a rewriting unit configured to, when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that the data processing apparatus is not yet operating based on the setting information notified by the notifying unit, rewrite information included in the received data according to the setting information changed by the changing unit.

4. The control apparatus according to claim 1, further comprising a judging unit configured to judge the necessity of notification by the notifying unit in accordance with the setting information changed by the changing unit.

5. The control apparatus according to claim 1, wherein the rewriting unit rewrites a destination address of the data received from the image processing apparatus.

6. The control apparatus according to claim 1, wherein the rewriting unit rewrites designated information included in data corresponding to a designated protocol.

2. A control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the control apparatus comprising:

a changing unit configured to change setting information that is set for network communications;

a notifying unit configured to notify the data processing apparatus of the setting information changed by the changing unit;

a detecting unit configured to detect a reboot operation of the data processing apparatus performed after notification by the notifying unit; and

a rewriting unit configured to, when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that the detecting unit detects no reboot operation of the data processing apparatus, rewrite information included in the received data according to the setting information changed by the changing unit.

3. The control apparatus according to claim 2, further comprising a transmitting unit configured to transmit, to the data processing apparatus, a message requesting the data processing apparatus to encourage a user to reboot the data processing apparatus, after notification by the notifying unit.

7. A method for controlling communications performed by a control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the method comprising:

changing setting information that is set for network communications;

notifying the data processing apparatus of the changed setting information; and

when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that the data processing apparatus is not yet operating based on the changed setting information, rewriting information included in the received data according to the changed setting information.

8. A method for controlling communications performed by a control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the method comprising:

changing setting information that is set for network communications;

transmitting the changed setting information to the data processing apparatus via the first network;

detecting a reboot operation of the data processing apparatus performed after the changed setting information is transmitted; and

when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that no reboot operation of the data processing apparatus is detected, rewriting information included in the received data according to the changed setting information.

9. A communication control program for controlling a control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the communication control program comprising:

program code for a changing Step of changing setting information that is set for network communications;

program code for a notifying Step of notifying the data processing apparatus of the setting information changed in the changing Step; and

program code for a rewriting Step of, when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that the data processing apparatus is not yet operating based on the setting information notified in the notifying Step, rewriting information included in the received data according to the setting information changed in the changing Step.

10. A communication control program for controlling a control apparatus provided between a first network and a second network different from the first network, in which a data processing apparatus is connected to the first network, the communication control program comprising:

program code for changing setting information that is set for network communications;

program code for transmitting the changed setting information to the data processing apparatus via the first network;

program code for detecting a reboot operation of the data processing apparatus performed after the changed setting information is transmitted; and

program code for, when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that no reboot operation of the data processing apparatus is detected, rewriting information included in the received data according to the changed setting information.

11. A data processing system and network comprising:

a data processing apparatus connected to a first network; and

a control apparatus provided between the first network and a second network different from the first network, wherein

the control apparatus comprises,

a changing unit configured to change setting information that is set for network communications;

a notifying unit configured to notify the data processing apparatus of the setting information changed by the changing unit;

a detecting unit configured to detect a reboot operation of the data processing apparatus performed after notification by the notifying unit; and

a rewriting unit configured to, when the control apparatus receives data to be transmitted to a destination apparatus connected to the second network from the data processing apparatus under a condition that the detecting unit detects no reboot operation of the data processing apparatus, rewrite information included in the received data according to the setting information changed by the changing unit.