Session initiation protocol denial of service attack throttling
US9736118B2 · kind B2 · utility
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3References
19Claims
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Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jun 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1104
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one implementation, the number of half open session initiation protocol (SIP) sessions per-destination (e.g., SIP device) or globally is limited by SIP application layer gateway (ALG) as a SIP DoS/DDoS countermeasure. Compared with traditional SIP DoS/DDoS countermeasures, the proposed solution is simple to implement and, thus, less likely to degrade SIP ALG performance. Moreover, this solution automatically adapts to DoS/DDoS attack arrival rate, while at the same time not degrading legal SIP traffic even if throttling is enforced for the SIP device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.