Detection of denial-of-service attacks using frequency...

Details Detection of denial-of-service attacks using frequency... Detection of denial-of-service attacks using frequency...

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.

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