Wi-Fi 6E Rogue AP Mitigation with Pre-Encryption Spoofed Beacons
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Solution Overview
Problem
Existing methods for detecting and mitigating Wi-Fi 6E rogue access points are inadequate due to mandatory management frame protection (MFP) and WPA3 encryption, making standard layer 2 mitigation strategies ineffective, and there is a need for a robust technique to prevent connections from Wi-Fi 6E stations to rogue access points before encryption.
Innovation Solution
A rogue Wi-Fi 6E scanning module periodically scans for beacons from neighboring access points, identifies potential rogue access points using MFP fields, and broadcasts spoofed beacons with modified MFP fields to indicate no encryption capability, preventing connections to rogue access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard layer 2 mitigation strategies (spoofing de-authentication frames) are used, then rogue access points can be disrupted, but these strategies become ineffective due to mandatory MFP and WPA3 encryption
Solution Approach 1:
The system performs preliminary identification of rogue access points by analyzing beacon frames and MFP fields before encryption is established. By detecting rogue APs in advance through their beacon signatures and MFP configuration, the system can prepare mitigation actions before the encrypted connection is formed, making standard layer 2 strategies effective again
Solution Approach 2:
The system uses MFP fields in beacon frames as an intermediary indicator to identify rogue access points. Instead of directly attacking encrypted management frames, the system analyzes the MFP field configurations in beacons to detect anomalies that indicate rogue APs, then uses this information to coordinate targeted mitigation actions
2Object-affected harmful factors
If WIPS sensors transmit layer 2 de-authentication frames to mitigate rogue access points, then rogue connections can be disrupted, but MFP and WPA3 encryption render these frames ineffective
Solution Approach 1:
The system identifies rogue access points through beacon frame analysis and MFP field inspection before encrypted connections are established. This preliminary identification allows the system to coordinate mitigation actions through the Wi-Fi controller before rogue clients can connect, making de-authentication frames effective again by timing them before MFP encryption takes over
Solution Approach 2:
The system continuously monitors beacon frames and MFP fields from access points, providing feedback to the Wi-Fi controller about detected rogue APs. This feedback loop enables real-time coordination of mitigation strategies, allowing de-authentication frames to be sent at optimal moments when they can still affect rogue connections despite MFP and WPA3 encryption
Data Source
AI summary
A list is received from the Wi-Fi controller of rogue Wi-Fi 6E access points identified by BSSID within a vicinity of the Wi-Fi 6E access points based on RSSI measurements sent to the Wi-Fi controller. A rogue Wi-Fi 6E access point of the Wi-Fi controller list from the periodic beacon scanning. In response, prior to connection of any station to the rogue Wi-Fi 6E access point, broadcasts spoofed beacons on behalf of the rogue Wi-Fi 6E access point, using SSID and BSSID over the current operating channel of the rogue Wi-Fi 6E access point. The beacons are spoofed by modifying the MFP field value to indicate no encryption capability and also to indicate no encryption requirement for management frames.