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Guardian
Learn how Guardian provides comprehensive asset inventory and network visibility for OT and IoT environments.
Administrator Guide
Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
Administration
Settings
Synchronization settings
The Synchronization settings page lets you customize the parameters related to Vantage or Central Management Console (CMC).
Data Diode
Data diodes provide unidirectional network communication to securely transfer data from high-security environments, ensuring critical infrastructure and industrial control systems are protected from inbound cyber threats.
Data diodes
Data diodes provide unidirectional network communication to securely transfer data from high-security environments, ensuring critical infrastructure and industrial control systems (ICS) are protected from inbound cyber threats.

Guardian
Learn how Guardian provides comprehensive asset inventory and network visibility for OT and IoT environments.
- Introduction
  An overview of Guardian.
- Installation Guide
  Information and resources on how to install Guardian, and the different options and settings that are available.
- Administrator Guide
  Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
  - Administration
    - Administration page
      The administration page lets a user with administrator privileges configure settings and do other tasks.
    - Settings
      - Security control panel
        The Security control panel page shows an overview of the current status of the learning process and lets you configure the features that manage the: learning, security profile, zones, alerts tuning, and alert closing options.
      - Features
        The Features page shows an overview of the current status of system features configuration and lets you fine tune specific values.
      - Users management
        The Users management page shows all the pages that you need to let you manage authentication and authorization policies for users and groups.
      - CLI
        The CLI page lets you change configuration parameters and perform troubleshooting activities.
      - Dashboards
        The Dashboards page lets you create and configure widget-based dashboards that provide information about your network. The dashboards created here will show on the Guardian home page, and give an overview of the monitored environment.
      - Threat Intelligence
        The Threat Intelligence page lets you manage packet rules, YARA rules, Sigma rules, structured threat information expression (STIX) indicators and vulnerabilities to provide detailed threat information.
      - Custom fields
        The Custom fields page lets you create a custom field to the Nodes (All-In-One CMC only) and Assets tables. A custom field lets you add information that might be relevant to your organization, and cannot be extracted from network traffic.
      - Data integration
      - Firewall integration
        The Firewall integrations page shows all the firewall integrations and lets you add new ones.
      - Credentials manager
        The Credentials manager is a tool that lets you centralize the management of monitored endpoints to make it easier to create, delete, or update the credentials that are needed to access those endpoints.
      - Zone configurations
        The Zone configurations page shows all the zone configurations in your environment and lets you add new zone configurations and edit them.
      - Synchronization settings
        The Synchronization settings page lets you customize the parameters related to Vantage or Central Management Console (CMC).
        General
        The General page lets you customize the parameters related to Vantage or Central Management Console (CMC).
        Data Diode
        Data diodes provide unidirectional network communication to securely transfer data from high-security environments, ensuring critical infrastructure and industrial control systems are protected from inbound cyber threats.
        Data diodes
        Data diodes provide unidirectional network communication to securely transfer data from high-security environments, ensuring critical infrastructure and industrial control systems (ICS) are protected from inbound cyber threats.
        Configure a Guardian as a producer
        Configure a Guardian sensor to communicate to an upstream data diode and Central Management Console (CMC).
        Connect a sensor to CMC
        Connect one or more sensors to a Central Management Console (CMC).
      - Alert playbooks
    - System
- User Guide
  Information and resources about the main features of Guardian, and the tasks that you can do from the user interface (UI).
- Maintenance Guide
  Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
- Print format documentation
  A list of all the print-format documentation that is available for Guardian.

Data diodes

Data diodes provide unidirectional network communication to securely transfer data from high-security environments, ensuring critical infrastructure and industrial control systems (ICS) are protected from inbound cyber threats.

In cybersecurity software, data diodes are used to establish unidirectional network communication, which allows data to flow in only one direction. This ensures that sensitive networks can send out information, such as system logs or alerts, without risking inbound connections that attackers could exploit. Data diodes prevent a reverse flow of data to effectively block potential cyberattacks and data leaks.

Data diodes are particularly crucial in securing critical infrastructure and industrial control systems (ICS), such as power grids and water supply systems. They allow operational data to be monitored externally without exposing these systems to outside threats. Additionally, they isolate high-security networks from less secure ones, maintaining strict separation to prevent unauthorized access while enabling necessary data sharing.

This technology secures data transfer to protect the integrity of logs and alerts, which supports compliance with regulatory requirements. As they use a physical barrier against cyber threats, data diodes enhance the security posture of organizations in sectors where safeguarding data and maintaining system integrity are critical.

Unlike firewalls, which allow controlled bidirectional communication and require ongoing management, data diodes provide a hardware-based, one-way data flow that is inherently more secure against breaches. This makes them ideal for environments that require absolute isolation.

Data diodes complement firewalls, and offer simpler, fail-safe protection for high-risk, unidirectional data transfer scenarios.