Title:
UNAUTHORIZED PACKET ANALYZER AND UNAUTHORIZED PACKET ANALYSIS METHOD
Document Type and Number:
Japanese Patent JP3721182
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an unauthorized packet analyzer and an unauthorized packet analysis method capable of enhancing the performance of an unauthorized access monitoring system by remarkably alleviating a processing load regarding a calculation of check sum in system operation.
SOLUTION: A comparison and judgment processing part 20 provided at a prestage of a check sum inspection part 30 transmits a packet which is judged not to be legitimate and has possibility of attacking a server of a packet transmission destination to the check sum inspection part 30. In addition, a packet which is judged to be legitimate and has no possibility of attacking the server of the packet transmission destination is not transmitted to the check sum inspection part 30 but directly transferred to a network interface 12 via a transfer path (PT).
Inventors:
Masamichi Tateoka
Application Number:
JP2003318797A
Publication Date:
November 30, 2005
Filing Date:
September 10, 2003
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04L12/66; (IPC1-7): H04L12/66
Other References:
S. Gill,Maximizing Firewall Availability,2002年 6月15日,URL,http://www.cymru.com/gillsr/documents/maximizing-firewall-availability.pdf
Fanglu Guo and Tzi-cker Chiueh,Traffic Analysis: From Stateful Firewall to Network Intrusion Detection System,State University of New York, Department of Computer Science, Technical Report,2004年 1月,TR-164
Fanglu Guo and Tzi-cker Chiueh,Traffic Analysis: From Stateful Firewall to Network Intrusion Detection System,State University of New York, Department of Computer Science, Technical Report,2004年 1月,TR-164
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto