Scalable filtering and policing mechanism for protecting user traffic in a network
US7804774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2006 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Aug 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/141
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Described are computer-based methods and apparatuses, including computer program products, for scalable filtering and policing mechanism for protecting user traffic in a network. A data packet is filtered by a multi-tiered filtering and transmission system. Data packets matching the first tier filter are discarded. Data packets matching the second tier filter are transmitted to an output module based on a criterion. Data packets in the third tier filter are hashed into bins and data packets matching an entry in the bin are transmitted to the output module based on a criterion for the bin. Data packets in the fourth tier transmission system are transmitted to the output module based on a criterion. Data packets that do not meet the criterion for transmission to the output module are transmitted to an attack identification module which analyzes the data packets to identify attacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.