Network device with addressing filtering

• US 7,631,090 B2
• Filed: 08/20/2004
• Issued: 12/08/2009
• Est. Priority Date: 08/27/2003
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Nagai, Yusuke
• Primary Examiner(s): Abdullahi; Salad
• Assistant Examiner(s): Hussain; Imad
• Application Number:
  US10/921,898
• Publication Number:
  US 20050060407A1
• Time in Patent Office: 1,936 Days
• Field of Search: 709/206, 709/225, 709/229
• US Class Current: 709/229
• CPC Class Codes: H04L 63/0236 Filtering by address, protocol, port number or service, e.g. IP-address or URL

Abstract

When it is judged that the IP address of a PC for the administrator is not included in IP addresses received from the PC for the administrator under accessing while a PC whose access is to be authorized is registered (NO in S20), the IP address of the PC for the administrator is registered besides IP addresses received for identifying PCs (S21). Meanwhile, when it is judged that the IP address of a PC for the administrator is included in IP addresses received from the PC for the administrator under accessing while a PC whose access is to be rejected is registered (YES in S43), the IP addresses received for identifying PCs are registered after excluding the IP address of the PC for the administrator therefrom (S21). This makes it possible to avoid a situation that an access from the terminal device for the administrator to a network device becomes impossible.

Claims

1. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

registering means for, when said judging means judges that the identification information detected by said detecting means is included in the received identification information, registering the received identification information on said identification information registration unit after excluding the identification information detected by said detecting means from the received identification information.

2. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

registering means for, when said judging means judges that the identification information detected by said detecting means is not included in the received identification information, registering the received identification information on said identification information registration unit after adding the identification information detected by said detecting means to the received identification information.

3. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

means for, when said judging means judges that the identification information detected by said detecting means is included in the received identification information, notifying the terminal device that is accessing the network device of the same.

4. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

means for, when said judging means judges that the identification information detected by said detecting means is not included in the received identification information, notifying the terminal device that is accessing the network device of the same.

5. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

means for, when said judging means judges that the identification information detected by said detecting means is included in the received identification information, making a display state of the identification information detected by said detecting means on a display screen of the terminal device that is accessing the network device different from other identification information.

6. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered;

detecting means for detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging means for judging whether the detected identification information by said detecting means is included in the received identification information by said receiving means or not; and

means for, when said judging means judges that the identification information detected by said detecting means is not included in the received identification information, setting the identification information detected by said detecting means on a display screen of the terminal device that is accessing the network device as identification information to be registered.

7. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

registering the received identification information on said identification information registration unit after excluding the detected identification information from the received identification information, when it is judged that the detected identification information is included in the received identification information.

8. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

registering the received identification information on said identification information registration unit after adding the detected identification information to the received identification information, when it is judged that the detected identification information is not included in the received identification information.

9. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

notifying the terminal device that is accessing the network device that the detected identification information is included in the received identification information, when it is judged so.

10. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

notifying the terminal device that is accessing the network device that the detected identification information is not included in the received identification information, when it is judged so.

11. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

making a display state of the detected identification information on a display screen of the terminal device that is accessing the network device different from other identification information, when it is judged that the detected identification information is included in the received identification information.

12. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered; and

a controller, coupled to said identification information registration unit, and capable of performing the following operations of;

detecting identification information of an access terminal device for an administrator that is accessing the network device;

receiving means for receiving identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device;

judging whether the detected identification information is included in the received identification information by said receiving means or not; and

setting the detected identification information on a display screen of the terminal device that is accessing the network device as identification information to be registered, when it is judged that the detected identification information is not included in the received identification information.

13. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for rejecting an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be rejected, among said plurality of terminal devices, is registered;

detecting unit which detects identification information of an access terminal device for an administrator that is accessing the network device;

a receiving unit which receives information of one or more terminal devices an access from which is to be rejected, wherein said identification information of one or more terminal devices an access from which is to be rejected is transmitted from said access terminal device that is accessing the network device; and

a judging unit which judges whether the detected identification information by the detecting unit is included in the received identification information by the receiving unit or not, wherein

the identification information registration unit, when said judging unit judges that the detected identification information by the detecting unit is included in the received identification information by the receiving unit, registers the received identification information after excluding the detected identification information by the detecting unit from the received identification information by the receiving unit.

14. A network device, which is network-connected with a plurality of terminal devices and has a network filtering function for authorizing an access from a preliminarily registered terminal device among said plurality of terminal devices, comprising:

an identification information registration unit on which identification information for identifying a terminal device an access from which is to be authorized, among said plurality of terminal devices, is registered;

detecting unit which detects identification information of an access terminal device for an administrator that is accessing the network device;

a receiving unit which receives identification information of one or more terminal devices an access from which is to be authorized, wherein said identification information of one or more terminal devices an access from which is to be authorized is transmitted from said access terminal device that is accessing the network device; and

a judging unit which judges whether the detected identification information by the detecting unit is included in the received identification information by the receiving unit or not, wherein

the identification information registration unit, when said judging unit judges that the detected identification information by the detecting unit is not included in the received identification information by the receiving unit, registers the received identification information after adding the detected identification information by the detecting unit to the received identification information by the receiving unit.