The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2008
Filed:
Jul. 26, 2004
Naohiro Tamura, Kawasaki, JP;
Takuya Habu, Kawasaki, JP;
Mayuko Morita, Kawasaki, JP;
Osamu Koyano, Kawasaki, JP;
Naohiro Tamura, Kawasaki, JP;
Takuya Habu, Kawasaki, JP;
Mayuko Morita, Kawasaki, JP;
Osamu Koyano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
This invention is to minimize influence to other network by preventing unauthorized accesses such as DDoS attacks and probing by worms. When the blocking apparatusesanddetect outbound packets by the DDoS attacks or by the probing by the worm, they carry out the Egress filtering for such outbound packets to prevent the packets relating to the unauthorized access from being sent to the backbone network. Moreover, because a notice to the effect that the unauthorized access is detected is sent to other blocking apparatusesandvia the management apparatus, for example, the blocking apparatusesandprecautionarily carry out the Ingress filtering to prevent the packets relating to the unauthorized access from being sent to the network C and D.