Communication control apparatus, communication system, information processing apparatus, and communication control method
First Claim
1. A communication control apparatus for controlling data communication between a first network and a second network, the communication control apparatus comprising:
- a processor;
a memory containing program instructions, the processor coupled to the memory executing the program instructions stored on the memory causing the processor to perform a procedure including;
receiving a first packet sent from an access requesting apparatus over the first network, and upon determining that an access requested apparatus recognized from the received first packet exists in the second network, registering first identification information included in the received first packet in a storage unit of the communication control apparatus, the first packet being generated so as to include the first identification information identifying the access requesting apparatus and to enable communication control apparatuses which receives the first packet over the first network to recognize the access requested apparatus;
receiving a second packet including the first identification information over the first network, the second packet being sent by multicast to search for a communication control apparatus connected to a network which the access requested apparatus is connected to;
upon determining that the first identification information included in the received second packet is registered in the storage unit of the communication control apparatus, sending second identification information identifying the communication control apparatus to the access requesting apparatus; and
upon determining that the first identification information included in the received second packet is not registered in the storage unit of the communication control apparatus, preventing sending of the second identification information to the access requesting apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
In a communication control apparatus, a first receiving unit receives a registration request packet which is generated so as to enable the communication control apparatus to recognize an access requested apparatus, and if determining that the access requested apparatus recognized from the registration request packet exists in a network, registers first identification information identifying an access requesting apparatus which is included in the registration request packet, in a storage unit. A second receiving unit receives an explorer packet, and if determining that first identification information included in the explorer packet has been registered in the storage unit, sends second identification information identifying the own apparatus to the access requesting apparatus.
-
Citations
18 Claims
-
1. A communication control apparatus for controlling data communication between a first network and a second network, the communication control apparatus comprising:
-
a processor; a memory containing program instructions, the processor coupled to the memory executing the program instructions stored on the memory causing the processor to perform a procedure including; receiving a first packet sent from an access requesting apparatus over the first network, and upon determining that an access requested apparatus recognized from the received first packet exists in the second network, registering first identification information included in the received first packet in a storage unit of the communication control apparatus, the first packet being generated so as to include the first identification information identifying the access requesting apparatus and to enable communication control apparatuses which receives the first packet over the first network to recognize the access requested apparatus; receiving a second packet including the first identification information over the first network, the second packet being sent by multicast to search for a communication control apparatus connected to a network which the access requested apparatus is connected to; upon determining that the first identification information included in the received second packet is registered in the storage unit of the communication control apparatus, sending second identification information identifying the communication control apparatus to the access requesting apparatus; and upon determining that the first identification information included in the received second packet is not registered in the storage unit of the communication control apparatus, preventing sending of the second identification information to the access requesting apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. communication system comprising:
- an information processing apparatus connected to a first network; and
a plurality of communication control apparatuses connected to respective ones of other networks different from the first network for controlling data communication between the first network and said respective ones of other networks connected to the communication control apparatuses, wherein;the information processing apparatus generates a first packet so as to include first identification information identifying the information processing apparatus and to enable communication control apparatuses which receives the first packet over the first network to recognize an access requested apparatus connected to one of said other networks, and sends the generated first packet over the first network, and sends a second packet including the first identification information over the first network after the first packet is sent; one of the plurality of communication control apparatuses receives the first packet over the first network, and upon determining that the access requested apparatus recognized from the received first packet exists in a second network connected to the one of the plurality of communication control apparatuses, registers the first identification information included in the received first packet in a storage unit of the one of the plurality of communication control apparatuses, receives the second packet over the first network, upon determining that the first identification information included in the received second packet is registered in the storage unit of the one of the plurality of communication control apparatuses, sends second identification information identifying the one of the plurality of communication control apparatuses to the information processing apparatus, and upon determining that the first identification information included in the received second packet is not registered in the storage unit of the one of the plurality of communication control apparatuses, prevents sending of the second identification information to the access requesting apparatus; and the second packet is sent by multicast to search for a communication control apparatus connected to a network which the access requested apparatus is connected to. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- an information processing apparatus connected to a first network; and
-
15. A communication control method for a communication control apparatus connected to a first network and a second network, the communication control method comprising:
-
receiving, by the communication control apparatus, a first packet sent from an access requesting apparatus over the first network, and upon determining that an access requested apparatus recognized from the received first packet exists in the second network, registering first identification information included in the received first packet in a storage unit of the communication control apparatus, the first packet being generated so as to include the first identification information identifying the access requesting apparatus and to enable communication control apparatuses which receives the first packet over the first network to recognize the access requested apparatus; receiving, by the communication control apparatus, a second packet including the first identification information over the first network, the second packet being sent by multicast to search for a communication control apparatus connected to a network which the access requested apparatus is connected to; upon determining that the first identification information included in the received second packet is registered in the storage unit of the communication control apparatus, sending, by the communication control apparatus, second identification information identifying the communication control apparatus to the access requesting apparatus; and
upon determining that the first identification information included in the received second packet is not registered in the storage unit of the communication control apparatus, preventing, by thecommunication control apparatus, sending of the second identification information to the access requesting apparatus. - View Dependent Claims (16, 17, 18)
-
Specification