Selective MITM Gateway Inspection for Smart Device Security
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Solution Overview
Problem
Smart devices on home and business networks are vulnerable to hacking, with users often unaware of compromised devices until they fail, and existing solutions do not effectively detect or thwart malicious activity targeting these devices.
Innovation Solution
The implementation of crowdsourced Bayesian packet analysis for anomaly detection, selective Man-In-The-Middle (MITM) gateway inspection of network traffic, and smart device fingerprinting to identify services and predict vulnerabilities, utilizing Bayesian priors and crowdsourced data to analyze network traffic and device metadata for early threat identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MITM gateway performs inspection of all network traffic associated with smart devices, then network security detection capability is improved, but network performance and device operation are adversely affected
Solution Approach 1:
The MITM gateway performs packet capture and inspection selectively rather than on all traffic. It captures packets from smart devices and analyzes them for anomalies, but only inspects a subset of traffic based on device classification and anomaly detection needs, rather than performing full-depth inspection on every packet flowing through the network
Solution Approach 2:
The system segments network traffic analysis by classifying smart devices into different categories and applying different inspection strategies. The gateway divides traffic into segments based on device type, priority, and risk level, allowing focused inspection on high-risk traffic while minimizing interference with low-risk communications
2Measurement precision
If MITM gateway captures and inspects packets from all smart devices, then anomaly detection accuracy is improved, but device operation is adversely affected
Solution Approach 1:
The MITM gateway acts as an intermediary between smart devices and the network, capturing packets at the gateway level rather than installing monitoring software on each device. This intermediary approach allows comprehensive packet capture and analysis while keeping the actual devices unaware and unaffected by the monitoring process
Solution Approach 2:
The system performs partial packet inspection by analyzing packet headers and metadata rather than full packet contents in all cases. It captures all packets from classified devices but applies different levels of inspection depth based on anomaly indicators, device classification, and risk assessment
Data Source
AI summary
A method is provided for performing selective inspection of network traffic associated with a plurality of network-connected smart devices using a Man-In-The-Middle (MITM) gateway. The MITM gateway operate in a first mode or a second mode for each of the network-connected smart devices. The first mode configures the MITM gateway to perform inspection of network traffic associated with the respective network-connected smart device, and the second mode configures the MITM gateway to not perform any inspection of network traffic associated with the respective network-connected smart device. The MITM gateway is changed to operate in the second mode for a respective network-connected smart device when it is detected that the MITM gateway operating in the first mode is adversely affecting the operation of the respective network-connected smart device.