Dynamic Packet Selection for Residential Threat Detection
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Solution Overview
Problem
Home networks are increasingly vulnerable to cyber-attacks due to the growing number of devices and lack of basic cybersecurity measures, with existing residential threat detection solutions being ineffective in identifying new or changing threats and requiring extensive resources, making them impractical for residential environments.
Innovation Solution
A dynamically optimized packet inspection method is implemented in customer premises equipment (CPE) that monitors CPE load characteristics, internal and external threat information, and asset characteristics to create packet selection rules, allowing for the efficient inspection of a predefined number of packets from communication sessions, thereby identifying potential threats and blocking malicious traffic without disrupting network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If comprehensive packet inspection is performed on all communication sessions, then threat detection accuracy is improved, but network performance deteriorates and resource consumption increases
Solution Approach 1:
The system inspects only a predefined number of packets from each communication session rather than performing comprehensive inspection on all packets. This partial action approach maintains adequate threat detection while significantly reducing the processing burden on network resources and maintaining network performance.
Solution Approach 2:
The packet inspection process is segmented by dividing communication sessions into individual packet units, where only a limited number of packets per session are selected for inspection. This segmentation allows the system to manage inspection workload efficiently while maintaining security effectiveness.
2Reliability
If packet inspection resources are increased to detect more threats, then threat detection capability is improved, but device complexity and cost increase
Solution Approach 1:
Instead of allocating resources to inspect all packets, the system inspects only a predefined subset of packets from each session. This reduces the computational resources, memory, and processing power required for threat detection, making the solution feasible for residential CPE devices with limited capabilities.
3Measurement precision
If all packets from communication sessions are inspected, then detection precision is improved, but loss of time and processing overhead increase
Solution Approach 1:
The system achieves adequate detection precision by inspecting only a predefined number of packets from each communication session rather than all packets. This partial inspection approach maintains the ability to detect threats while significantly reducing processing time and minimizing impact on network throughput.
Data Source
AI summary
A method of dynamic residential threat detection is disclosed. The method includes a packet selection component on a customer premises equipment (CPE) sending a predefined number of packets of each of a plurality of communication sessions to a detection engine based on packet selection rules. The method also includes the detection engine on the CPE receiving and inspecting the predefined number of packets. The method further includes a dynamic optimizing component on the CPE monitoring one or more factors and creating and sending updated packet selection rules based on the monitored factor(s) to the packet selection component. The method additionally comprises the packet selection component sending a different predefined number of packets of each of a second plurality of communication sessions to the detection engine based on the updated packet selection rules. The method further includes the detection engine receiving and inspecting the different predefined number of packets.