Firewall with index to access rule
CA 2434600 A1 · Owner: Marconi Communications Limited · Inventors: Weeks, Robert Anthony; Lumb, Anthony Peter; St. Pier, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packet control means for checking packets according to a plurality of rules in which each packet is associated with a control value; the packet control means comprising index means for generating an index value from the control value associated with a packet and means for using the index value to access a rule for checking the packet from the plurality of rules. The control value is set by the packet control means. Advantageously the packet checking always , requires a single access to the plurality of rules allowing for faster , operation.
Read the whole patent
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 January 7, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2024.
- 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.