Device for protection against illegal communications and network system thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8175096
APP PUB NO 20070201474A1
SERIAL NO

11657556

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A communication device, an illegal communication protection device, and network system for providing protection from illegal communications. A communication device is connected to a network, for receiving packets sent and received over networks, and transmitting packets based on the packet destination, includes a control unit, and a storage unit for storing a routing table that stores the destination information. When there is a connection request from a packet that was received, the control unit stores the transmit source address of that packet and the line number where that packet was received, into a routing table, and where there is no connection request from the received packet, the control unit refers to the routing table, acquires the line number linked to an address matching the destination address of that packet, and sends the applicable packet via the acquired line number.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTDJAPAN

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Isobe, Takashi Machida, JP 100 1257

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