No Routing
It does not make IP routing decisions or act as a network router.
Bardin Gate Light
Physical Layer 1 Network Isolation
A hardware-based network isolation switch designed for controlled path selection between Safe, Common, and Unsafe networks.
Safe Network
Trusted or protected network path.
Common Network
Shared endpoint connected to only one selected path at a time.
Unsafe Network
Untrusted or external network path.
Hardware Isolation
Not a Router. Not a Firewall. Not a Software Bridge.
Bardin Gate Light operates at the physical layer. It does not route packets, forward traffic, inspect packets, or create a software bridge between networks.
No Packet Forwarding
It does not forward packets between two networks like a switch or bridge.
No Packet Inspection
It does not inspect payloads, sessions, protocols, or application traffic.
No Simultaneous Connectivity
The common path is connected to one selected side, not both at the same time.
How It Works
Bardin Gate Light provides hardware-based path switching. The selected network path is physically connected while the other path remains disconnected.
1. Select Path
An authorized control mechanism selects the active network path.
2. Physical Switching
The device changes the physical connection path at Layer 1.
3. Isolated State
Only one path is active. The alternate network remains physically separated.
Three Network Roles
Bardin Gate Light is designed around three network roles: Safe, Common, and Unsafe.
Safe Network
A protected, trusted, or internal network that should not remain continuously connected to an unsafe network.
Common Network
The shared endpoint or system side that can be connected to only one selected path at a time.
Unsafe Network
An external, untrusted, temporary, or less-controlled network path.
Common Use Cases
These scenarios require a device or system to use one network path at a time without creating a persistent bridge between different trust levels.
Controlled Maintenance Access
Temporarily switch access paths during maintenance while keeping networks separated by default.
Testing and Validation
Switch between safe and test environments without relying on routing rules.
Operational Network Separation
Support scenarios where operational paths must be physically selected and not simultaneously connected.
Security Boundary Control
Add a physical control point between networks with different trust levels.
Lab and Staging Isolation
Separate lab, staging, and operational paths using hardware-based switching.
Emergency Disconnection
Support fast path change or disconnection strategies in controlled environments.
Why Layer 1 Matters
Many security controls operate at software, network, or application layers. Bardin Gate Light focuses on the physical connectivity layer.
Simple Boundary
The active path is determined by physical connectivity, not packet-processing logic.
Reduced Attack Surface
No routing or forwarding plane is introduced between the separated networks.
Clear Connection State
The design makes the selected connection state explicit and operationally visible.
No Hidden Bridge
The device is not designed to behave as a hidden software or network bridge.
Relevant Environments
Bardin Gate Light is relevant for organizations that need physical separation between network paths.
Telecommunications
Controlled switching between operational and support paths.
Government
Physical separation for sensitive network boundaries.
Energy & Utilities
Operational environments requiring controlled connectivity.
Industrial & OT
Network path control for industrial and operational systems.
Define the Required Physical Network Boundary
Discuss the Safe, Common, and Unsafe roles, control method, and operating procedure for your environment.