The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Dec. 01, 2006
Shaun Jaikarran Bharrat, Manalapan, NJ (US);
Mark Duffy, Lexington, MA (US);
Ronald V. Grippo, Red Bank, NJ (US);
Shiping LI, Acton, MA (US);
John A. Perreault, Hopkinton, MA (US);
Jian Yang, Boxboro, MA (US);
Shaun Jaikarran Bharrat, Manalapan, NJ (US);
Mark Duffy, Lexington, MA (US);
Ronald V. Grippo, Red Bank, NJ (US);
Shiping Li, Acton, MA (US);
John A. Perreault, Hopkinton, MA (US);
Jian Yang, Boxboro, MA (US);
Sonus Networks, Inc., Westford, MA (US);
Abstract
Described are computer-based methods and apparatuses, including computer program products, for filtering and policing for defending against denial of service attacks on 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.