Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform
Reexamination Certificate
2007-10-16
2007-10-16
Lee, Andrew C. (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Fourier transform
C370S252000
Reexamination Certificate
active
10224507
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.
REFERENCES:
patent: 6296612 (2001-10-01), Mo et al.
patent: 7002913 (2006-02-01), Huang et al.
patent: 7072297 (2006-07-01), Grosdidier et al.
patent: 2002/0103916 (2002-08-01), Chen et al.
patent: 2006/0146869 (2006-07-01), Zhang et al.
patent: WO 01/80480 (2001-10-01), None
“The SRI IDES Statistical Anomaly Detector”, Harold S. Javitz et al., Proceedings of the Symposium on Research in Security and Privacy, May 20-22, 1991, IEEE Comp. Soc. Press, Vol. Symp. 12, pp. 316-326.
“Basic Principles of the Spectral Analyses with Discrete Fourier Transformation”, (Part 5), D. Kress et al., Nachrichtentechnik Elektronik, vol. 37, No. 9, pp. 348-352.
“Basics of the Dynamic Signal Analysis”, Jul. 1991, Hewlett Packard S.A., ISBN: 5952-8898, pp. 21-51.
“Probabilistic Techniques for Intrusion Detection Based on Computer Audit Data”, IEEE Transactions on Systesm, Man and Cybernetics. Ye, Nong et al., IEEE Service Center, vol. 31, No. 4, Jul. 2001, pp. 266-274, ISSN:1083-4427.
D'Souza Scott
Kierstead Paul
(Marks & Clerk)
Alcatel Canada Inc.
Budd S. Mark
Lee Andrew C.
LandOfFree
Detection of denial-of-service attacks using frequency... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection of denial-of-service attacks using frequency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of denial-of-service attacks using frequency... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3899856