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:
Oct. 14, 2008
Filed:
Jan. 21, 2004
Jason Sterne, Ottawa, CA;
Adrian Grah, Kanata, CA;
Shay Nahum, Ottawa, CA;
Predrag Kostic, Burnaby, CA;
Herman Ho Ming Liu, Vancouver, CA;
Jason Sterne, Ottawa, CA;
Adrian Grah, Kanata, CA;
Shay Nahum, Ottawa, CA;
Predrag Kostic, Burnaby, CA;
Herman Ho Ming Liu, Vancouver, CA;
Alcatel Lucent, Paris, FR;
Abstract
The packet rate limiting method and system is used for detecting and blocking the effects of DoS attacks on IP networks. The method uses an ACL counter that stores an action parameter in the first 3 most significant bits and uses 13 bits as a packet counter. A rate limit is enforced by setting the packet counter to an initial value, and resetting this value at given intervals of time. The action parameter enables the ACL to accept or deny packets based on this rate limit. If the number of packets in the incoming flow saturates the packet counter before the reset time, the packets are denied access to the network until the counter is next reset. The denied packets may be just discarded or may be extracted for further examination.