Access management apparatus, program and remote start-up method of terminal device

• US 20060056397A1
• Filed: 09/14/2005
• Published: 03/16/2006
• Est. Priority Date: 09/15/2004
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Teramoto, Keiichi, Morioka, Yasuhiro, Aizu, Hiroyuki
• Application Number:
  US11/225,031
• Publication Number:
  US 20060056397A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

There is provided with an access management apparatus which connects a communication network to a local area network and which manages access from the communication network to the local area network, the access management apparatus including: a packet receiver which receives a packet according to TCP or UDP from the communication network; a database storage unit which stores a database having a port number of the TCP or UDP in association with a MAC address; a MAC address detector which detects a MAC address associated with a destination port number in the packet received by the packet receiver, from the database; a start-up request packet generator which generates a start-up request packet to start up a terminal device having the detected MAC address on the local area network; and an output unit which outputs the generated start-up request packet to the local area network.

Claims

1. An access management apparatus which connects a communication network to a local area network and which manages access from the communication network to the local area network, the access management apparatus comprising:

a packet receiver which receives a packet according to TCP or UDP from the communication network;

a database storage unit which stores a database having a port number of the TCP or UDP in association with a MAC address;

a MAC address detector which detects a MAC address associated with a destination port number in the packet received by the packet receiver, from the database;

a start-up request packet generator which generates a start-up request packet to start up a terminal device having the detected MAC address on the local area network; and

an output unit which outputs the generated start-up request packet to the local area network.

2. The access management apparatus according to claim 1, further comprising:

an IP address manager which manages a plurality of IP addresses which are able to be assigned;

an assignment request receiver which receives IP address assignment request for requesting assignment of the IP address;

an IP address assigner which assigns the IP address to the terminal device in a case where the assignment request receiver has received the IP address assignment request from the terminal device; and

an IP address sender which sends a packet having the assigned IP address toward the terminal device in order to provide the terminal device with the assigned IP address.

3. The access management apparatus according to claim 2, further comprising:

a packet generator which generates a packet obtained by setting the assigned IP address to a destination IP address field of the packet received by the packet receiver; and

a packet output unit which outputs the generated packet to the local area network.

4. The access management apparatus according to claim 2, further comprising

a register which registers the assigned IP address in the database in association with the MAC address of the terminal device.

5. The access management apparatus according to claim 4, further comprising:

a checker which checks whether or not the terminal device is present on the local area network; and

an entry eraser which erases the IP address assigned to the terminal device from the database, in a case where the terminal device is not present.

6. The access management apparatus according to claim 4, further comprising

an entry eraser which erases the IP address assigned to the terminal device from the database, in a case where a validity term of the IP address assigned to the terminal device has expired.

7. The access management apparatus according to claim 4, further comprising

an entry eraser which erases the IP address assigned to the terminal device from the database, in a case of receiving a secession massage from the terminal device.

8. The access management apparatus according to claim 4, further comprising:

a further packet generator, in a case where a further packet is received by the packet receiver, which detects a destination port number in the further packet, which detects an IP address associated with the destination port number from the database, and which generates a packet obtained by setting the detected IP address to a destination IP address field of the further packet; and

a further packet output unit which outputs this generated packet to the local area network.

9. The access management apparatus according to claim 1, wherein the start-up request packet generator generates a magic packet as the start-up request packet.

10. The access management apparatus according to claim 1, further comprising a detector which detects an operational status of the terminal device, wherein

the output unit outputs the start-up request packet in a case where the terminal device is in standby status.

11. A program for inducing an access management device which connects a communication network to a local area network and which manages access from the communication network to the local area network, to execute:

a packet receiving step which receives a packet according to TCP or UDP from the communication network;

a MAC address detecting step which detects a MAC address associated with a destination port number in the received packet, from a database having a port number of the TCP or UDP in association with a MAC address;

a start-up request packet generating step which generates a start-up request packet to start-up a terminal device having the detected MAC address on the local area network; and

an outputting step which outputs the generated start-up request packet to the local area network.

12. The program according to claim 11, further for inducing the device to execute:

an assignment request receiving step which receives IP address assignment request for requesting assignment of an IP address;

an IP address assigning step which assigns an IP address to the terminal device in a case of receiving the IP address assignment request from the terminal device; and

an IP address sending step which sends a packet having the assigned IP address toward the terminal device, in order to provide the terminal device with the assigned IP address.

13. The program according to claim 12, further for inducing the device to execute:

a packet generating step which generates a packet obtained by setting the assigned IP address to a destination IP address field of the packet received by the packet receiving step; and

a packet outputting step which outputs the generated packet to the local area network.

14. The program according to claim 12, further for inducing the device to execute a registering step which registers the assigned IP address in the database in association with the MAC address of the terminal device.

15. The program according to claim 14, further for inducing the device to execute:

a detecting step, in a case where a further packet is received from the communication network, which detects a destination port number in the further packet;

a further detecting step which detects an IP address associated with the destination port number from the database;

a further packet generating step which generates a packet obtained by setting the detected IP address to a destination IP address field of the further packet; and

a further packet outputting step which outputs this generated packet to the local area network.

16. A remote start-up method that is used in an access management device which connects a communication network to a local area network and which manages access from the communication network to the local area network, comprising:

receiving a packet according to TCP or UDP from the communication network;

detecting a MAC address associated with a destination port number in the received packet, from a database having a port number of the TCP or UDP in association with a MAC address;

generating a start-up request packet to start-up a terminal device having the detected MAC address on the local area network; and

outputting the generated start-up request packet to the local area network.

17. The method according to claim 16, further comprising:

receiving IP address assignment request for requesting assignment of an IP address;

assigning an IP address to the terminal device in a case of receiving the IP address assignment request from the terminal device; and

sending a packet having the assigned IP address toward the terminal device, in order to provide the terminal device with the assigned IP address.

18. The method according to claim 17, further comprising:

generating a packet obtained by setting the assigned IP address to a destination IP address field of the received packet; and

outputting the generated packet to the local area network.

19. The method according to claim 17, further comprising

registering the assigned IP address in the database in association with the MAC address of the terminal device.

20. The method according to claim 19, further comprising:

in a case where a further packet is received from the communication network, detecting a destination port number in the further packet;

detecting an IP address associated with the destination port number from the database;

generating a packet obtained by setting the detected IP address to a destination IP address field of the further packet; and

outputting this generated packet to the local area network.