Method and apparatus for detecting a distributed denial of service attack
US7788718B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2002 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1458
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of identifying a distributed denial of service attack is described in which a rate profile is determined, where the rate profile corresponds to information transfer rates at which information is received from a network. A burst magnitude threshold based on this rate profile is then established. A burst duration profile characterizing periods of time during which the information transfer rate exceeds this burst magnitude threshold is also calculated, and a burst duration threshold is then defined based upon this burst duration profile. A distributed denial of service attack is identified when the information transfer rate exceeds the burst magnitude threshold for a period of time exceeding the burst duration threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.