Virtual Host Security Profiles for Multi-Homed Devices
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Solution Overview
Problem
Multi-homed machines connected to multiple networks face connectivity issues due to restrictive firewall profiles, as existing systems select the most restrictive profile, hindering seamless communication across different networks.
Innovation Solution
The implementation of virtual security profiles, each with specific sets of rules for different network address ranges, allows for seamless concurrent connectivity by creating and applying distinct firewall profiles for each network connection, ensuring secure and unrestricted communication across multiple networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the most restrictive firewall profile is selected for multi-homed machines, then security is improved, but connectivity and convenience deteriorate
Solution Approach 1:
The patent divides the single firewall profile into multiple virtual host profiles (work, home, public) that can be independently applied to different network interfaces. Each profile contains specific security rules tailored to its network type, allowing the firewall to segment security policies by network context rather than applying a single restrictive profile to all connections.
Solution Approach 2:
The firewall dynamically selects and applies appropriate virtual host profiles based on the active network interface and detected network type. The system automatically transitions between profiles as network connections change, enabling adaptive security that adjusts to the current network context without manual intervention or excessive restrictiveness.
2Device complexity
If a single firewall profile is applied to all network connections, then device complexity is reduced, but adaptability to different networks deteriorates
Solution Approach 1:
The firewall system implements multiple virtual host profiles that can be universally applied across different network interfaces. Each profile is designed to handle specific network types (work, home, public), giving the firewall multi-functionality to adapt to various network environments while maintaining a unified management interface.
Solution Approach 2:
The system automatically detects the network type and selects the appropriate virtual host profile without requiring manual configuration or user intervention. The firewall self-services by monitoring active network interfaces and applying the correct profile based on detected network characteristics, reducing the need for complex manual setup.
Data Source
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AI summary
Architecture that creates and applies a virtual firewall profile for each network to which a multi-homed device is connected. In one implementation, the virtual profiles can be based on address ranges of the networks. This ensures seamless concurrent connectivity of the multi-homed device to multiple networks.