Title:
ネットワーク伝送装置およびネットワーク伝送方法
Document Type and Number:
Japanese Patent JP3705297
Kind Code:
B1
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.
Inventors:
Kaori Morimoto
Nobuhiro Tsubone
Nobuhiro Tsubone
Application Number:
JP2005012872A
Publication Date:
October 12, 2005
Filing Date:
January 20, 2005
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L12/70; H04L13/08; H04L29/06; H04L29/08; (IPC1-7): H04L12/56; H04L13/08; H04L29/08
Domestic Patent References:
| JP11252179A | ||||
| JP2002217988A |
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka