NETWORK TRANSMISSION DEVICE - MITSUBISHI ELECTRIC CORP

Title:

NETWORK TRANSMISSION DEVICE

Document Type and Number:

WIPO Patent Application WO/2006/077659

Kind Code:

A1

Abstract:

When a network transmission device receives a SYN+ACK packet, the device allocates a memory area for managing a connection state and starts state management. Here, the connection state includes the type (SYN+ACK, ACK for SY_N+ACK, etc.) of the TCP control packet received. When the network transmission device receives an ACK packet, the device judges that the connection state is established and allocates a buffer for storing the TCP packet transmitted from a terminal device (1), in a memory. Thus, it is possible to obtain a network transmission device which is not easily attacked by a DoS attack by effectively using the memory resource.

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Inventors:

MORIMOTO KAORI (JP)
TSUBONE NOBUHIRO (JP)

Application Number:

PCT/JP2005/004103

Publication Date:

July 27, 2006

Filing Date:

March 09, 2005

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
MORIMOTO KAORI (JP)
TSUBONE NOBUHIRO (JP)

International Classes:

H04L12/70; H04L29/08; H04L13/08; H04L29/06

Foreign References:

JPH11252179A

1999-09-17

Attorney, Agent or Firm:

Takahashi, Shogo c/o MITSUBISHI DENKI KABUSHIKI KAISHA Corporate Intellectual Property Division (7-3 Marunouchi 2-chom, Chiyoda-ku Tokyo, JP)

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