Maintaining spatial ordering in firewall filters
US8316151B1 · kind B1 · utility
5Cited by
2References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Sep 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0236
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device may be configured to filter network traffic using multiple filters bound to different interfaces, such as different ports or other logical interfaces associated with the network device. Multiple filters may be merged to obtain a number of merged filter sets. A rank may be calculated for the merged filter sets and used to maintain a required ordering of the merged filter sets when performing a lookup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.