Apparatus and method for detecting tiny fragment attacks
CA 2518607 C · Owner: Cisco Technology, Inc. · Inventors: Wong, Kevin C.; He, Kaichuan; Rose, Kenneth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method and apparatus for checking link layer protocol frames such as Ethernet frames. The method can be implemented on a processor executing software instructions stored in memory. In one embodiment of the invention, the method includes receiving an Ethernet frame and counting data , bytes of the Ethernet frame to generate a total number of counted bytes. The total number of counted bytes can be used to calculate a data length of a datagram of the Ethernet frame. Once calculated the datagram data length can , be compared to a predetermined value. If the datagram length does not fall within an acceptable range of the predetermined value the Ethernet frame may , be …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 27, 2004 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.