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Gatekeeper Overview

Introduction​

The ColorTokens Xshield Gatekeeper is a network security appliance designed to provide micro-segmentation and zero-trust security for operational technology (OT) and medical device networks. It acts as a transparent gateway that monitors, controls, and secures network traffic while maintaining the performance requirements of critical systems.

Key Features​

Network Segmentation​

  • Provides micro-segmentation without requiring network infrastructure changes
  • Enforces zero-trust policies between devices and network segments
  • Maintains network performance while adding security controls

Device Management​

  • Automatic device discovery and classification
  • Real-time monitoring of device connection states
  • Integration with asset management and vulnerability assessment tools

High Availability​

  • Supports active/standby and active/active configurations
  • Automatic failover with minimal service disruption
  • Redundant network paths and power supplies

Policy Enforcement​

  • Progressive enforcement methodology
  • Test mode for policy validation
  • Centralized policy management through Xshield Console

Use Cases​

Medical Device Networks​

  • Protects critical medical equipment while maintaining availability
  • Ensures compliance with healthcare regulations
  • Provides audit trails for medical device communications

Industrial Control Systems​

  • Secures SCADA and industrial automation systems
  • Prevents lateral movement between OT network segments
  • Maintains real-time performance requirements

Critical Infrastructure​

  • Protects essential services and utilities
  • Provides network visibility and control
  • Ensures business continuity during security incidents