Multilayer firewall system
CA 2291158 A1 · Owner: 3Com Corporation · Inventors: Sherer, William Paul; Nessett, Danny M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system provides for establishing security in a network (10) that includes nodes having security functions operating in multiple protocol layers. Multiple network devices, such as remote access equipment (13) routers (14), switches (12), repeaters (16) and network cards (15) having security functions are configured to contribute to implementation of distributed firewall functions in the network. By distributing firewall functionality throughout many layers of the network in a variety of network devices a pervasive , firewall is implemented. The pervasive multilayer firewall includes a policy definition component (11) that accepts policy data that define how the firewall should …
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 May 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2020.
- 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.