Context-Based Bridge Server Access for Air-Gapped Networks
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Solution Overview
Problem
Traditional bridge servers for air-gapped networks lack the ability to inspect traffic and provide adequate security measures as threat capabilities increase, making reliance on isolation less acceptable.
Innovation Solution
Implement a bridge server with a context-based air-gap bridge application that includes modules for decryption/encryption, proxy resolution, security policy access, context-based security application, command forwarding, and temporary name generation to provide secure access to air-gapped and unadvertised cloud-based resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional bridge servers use simple SSH tunnels with minimal configurations, then ease of operation is improved, but security protection capability deteriorates
Solution Approach 1:
The patent introduces a bridge server as an intermediary component between the untrusted enterprise network and the air-gapped network. This mediator implements sophisticated security mechanisms including traffic inspection, context-based policy enforcement, and authentication protocols, thereby providing robust security protection while maintaining ease of operation for authorized users.
Solution Approach 2:
The bridge server architecture segments security functions into distinct modules: traffic inspection module, context analysis module, policy enforcement module, and authentication module. This segmentation allows each component to specialize in specific security tasks, improving overall security capability while maintaining system manageability and ease of operation.
2Device complexity
If air-gapped networks rely solely on isolation without traffic inspection, then device complexity is reduced, but security protection capability deteriorates
Solution Approach 1:
The bridge server serves as a mediator that implements traffic inspection and analysis capabilities without requiring modification of the air-gapped network infrastructure. By placing the inspection functionality in the intermediary bridge server, the patent achieves enhanced security protection while avoiding the complexity of modifying the isolated network's core components.
Solution Approach 2:
The patent extracts the traffic inspection and security analysis functions from the air-gapped network itself and places them in the bridge server. This extraction allows the air-gapped network to remain simple and isolated, while the bridge server handles the complex security inspection tasks, thereby reducing device complexity in the protected network while maintaining high security capability.
3Reliability
If bridge servers implement comprehensive traffic inspection and context-based security policies, then security protection capability is improved, but device complexity increases
Solution Approach 1:
The bridge server is designed as a multi-functional platform that combines traffic inspection, context analysis, policy enforcement, and authentication capabilities in a single unified system. This universal design allows the bridge server to perform multiple security functions simultaneously, improving security protection capability while avoiding the need for multiple separate complex systems.
Solution Approach 2:
The context-based security system implements self-service capabilities by automatically analyzing traffic patterns, evaluating context information, and enforcing policies without requiring manual intervention. The system autonomously performs security assessments and makes access decisions, thereby reducing operational complexity while maintaining high security protection capability.
Data Source
AI summary
Systems, devices, and methods are discussed for context protected access to an air-gapped network resource via a bridge server.