US 7,523,497 B2
Packet flooding defense systemGeneral
US 7,523,497 B2
Packet flooding defense system
Tech Center:
2400 Networking, Multiplexing, Cable, and Security
Examiner:
Kambiz Zand
Art Unit:
2439 Cryptography and Security
Inventors:
Donald N. Cohen
Assignee:
Priority:
11/16/00
Filed:
05/07/04
Granted:
04/21/09
Expiration:
11/05/22
Abstract
The invention prevents “packet flooding”, where an attacker uses up all available bandwidth to a victim with useless data. It can also be used to prevent some other related denial of service attacks. The defense is distributed among cooperating sites and routers. The sites identify data they don't want. The routers help sites to determine which routers forward that data. The sites then ask these routers to reduce the rate at which such data is forwarded. Variations of the defense protect against packet flooding attacks on routers and attacks in which an attacker tries to use up some service offered by a site.
Cooperative Patent Classification (CPC)
H04H04L63/1458H04L