Kernel-Space Packet Validation for Legacy Network Security

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Solution Overview

Problem

The challenge lies in securing communications between protected, trusted Ethernet-based networks and unsecured networks, particularly in bridging legacy devices that cannot be easily upgraded, due to high costs and infrastructure retrofitting barriers, necessitating methods to immunize or limit risks in mixed network environments.

Innovation Solution

Implementing communication management operations that validate and secure network packets by confirming payloads against pre-established data models, using secure communication pathways with rotated cryptographic keys, and verifying program and data model identifications before transmission, executed in kernel space to ensure authorized and formatted data exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If communication management operations are implemented to validate and secure network packets, then network security is improved, but device complexity increases

Engineering Contradiction:

Improvenetwork securityVSAvoidcommunication management operations

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary communication management operation layer that sits between the network interface controller and the operating system. This intermediary validates packets, checks data models, and manages cryptographic keys without requiring changes to legacy devices or applications, thus improving security while containing complexity in a dedicated component.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The security validation process is segmented into distinct operations: packet consumption, data model validation, cryptographic key management, and authorized pathway routing. Each segment handles a specific aspect of security, making the overall system more manageable and maintainable despite the increased complexity.

Inventive Principle:

Principle #1Segmentation

2Reliability

If data validation against pre-established data models is performed, then data integrity is improved, but processing time increases

Engineering Contradiction:

Improvedata integrityVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Data models are pre-established and registered before runtime operations. The communication management operation consumes packets and validates them against these pre-configured data models, avoiding the need to create or interpret schema definitions during packet processing, thus reducing validation time while maintaining integrity.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If secure communication pathways with cryptographic keys are established, then communication security is improved, but computational overhead increases

Engineering Contradiction:

Improvecommunication securityVSAvoidcomputational overhead

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Cryptographic keys are rotated periodically rather than being static. The system manages key rotation in a structured manner, establishing secure pathways with rotated keys at scheduled intervals. This periodic approach maintains security while allowing the system to optimize computational resources by reusing keys within their validity periods.

Inventive Principle:

Principle #19Periodic action

4Adaptability or versatility

If legacy devices are accommodated without upgrading, then adaptability is improved, but network vulnerability increases

Engineering Contradiction:

Improvelegacy device compatibilityVSAvoidnetwork vulnerability

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The communication management operation acts as a mediator between legacy devices and the secured network. It validates packets from legacy devices against data models and routes them through authorized pathways, allowing legacy devices to communicate without upgrading while protecting the network from their inherent vulnerabilities.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach effectively secures communications by ensuring only authorized and formatted data is transmitted between protected and unsecured networks, reducing risks and maintaining network integrity while accommodating legacy devices.

Implementation Method 1

using secure communication pathways with rotated cryptographic keys

Methodology Applied

Scientific EffectCryptographic key rotation:

Data Source

PatentUS20260039625A1Methods for Internet Communication Security

Publication Date: 2026.02.05 STEALTHPATH IP INC

AI summary

The present disclosure relates to network security software cooperatively configured on plural nodes to authenticate and authorize devices, applications, users, and data protocol in network communications by exchanging nonpublic identification codes, application identifiers, and data type identifiers via pre-established communication pathways and comparing against pre-established values to provide authorized communication and prevent compromised nodes from spreading malware to other nodes.