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:
Oct. 16, 2007
Filed:
Aug. 21, 2002
Applicants:
Scott D'souza, Ottawa, CA;
Paul Kierstead, Ottawa, CA;
Inventors:
Scott D'Souza, Ottawa, CA;
Paul Kierstead, Ottawa, CA;
Assignee:
Alcatel Canada Inc., Kanata, ON, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04J 11/00 (2006.01); H04J 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus for detecting denial of service attacks on a system in a communications network are provided. A frequency analysis is performed on certain types of packets that arrive with a periodic nature. A frequency power spectrum obtained through Fourier Transform reveals whether the power level of any particular frequency is greater than the average power spectrum. The detection of a higher than average power level is an indication that an attack is in progress.