Invention Grant
- Patent Title: Detecting and preventing denial of service attacks due to fraudulent BSS color collision events
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Application No.: US17223323Application Date: 2021-04-06
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Publication No.: US11601469B2Publication Date: 2023-03-07
- Inventor: Gautam Bhanage , David Kloper , Brian Hart
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04L29/06
- IPC: H04L29/06 ; H04L9/40 ; H04W12/00 ; H04W84/12

Abstract:
A management entity obtains from a first wireless access point a Basic Service Set (BSS) color collision event detected by the first wireless access point. The first wireless access point uses a first BSS color. A color collision event occurs when the first wireless access point receives from a device in a BSS of a different physical wireless access point a frame or PHY Protocol Data Unit (PPDU) that includes the first BSS color. The management entity obtains from the first wireless access point an indication whether the color collision event has been detected for longer than a predetermined duration. When the color collision event has been detected for longer than the predetermined duration, the management computes a probability of the color collision event. The management entity determines whether the color collision event is malicious or benign, and determines whether to maintain the first BSS color.
Public/Granted literature
- US20210226989A1 DETECTING AND PREVENTING DENIAL OF SERVICE ATTACKS DUE TO FRAUDULENT BSS COLOR COLLISION EVENTS Public/Granted day:2021-07-22
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