Wireless local or metropolitan area network with intrusion detection features and related methods
US7224678B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2002 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | May 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless local or metropolitan area network may include a plurality of stations for transmitting data therebetween using a media access layer (MAC), where each of the stations has a respective MAC address associated therewith. The wireless network may also include a policing station for detecting intrusions into the wireless network by monitoring transmissions among the plurality of stations to detect frame check sequence (FCS) errors from a MAC address, and generating an intrusion alert based upon detecting a number of FCS errors for the MAC address exceeding a threshold. The policing station may also detect intrusions based upon one or more of failed MAC address authentications, illegal network allocation vector (NAV) values, and unexpected contention or contention-free operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.