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Guardian
Learn how Guardian provides comprehensive asset inventory and network visibility for OT and IoT environments.
Installation Guide
Information and resources on how to install Guardian, and the different options and settings that are available.
Virtual installation
Virtual Guardian installation
Before you install a virtual machine (VM), you should make sure that you are familiar with the minimum requirements, and the supported formats and software that you can use with the Nozomi Networks software products.

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.
  - Introduction
  - Physical installation
  - Virtual installation
    - Virtual Guardian installation
      Before you install a virtual machine (VM), you should make sure that you are familiar with the minimum requirements, and the supported formats and software that you can use with the Nozomi Networks software products.
    - Virtual machine sizing
      A description of the virtual machine (VM) sizing requirements for Nozomi Networks sensors.
    - Minimum Guardian sizing requirements
      The following table gives recommended sizes for instances running the Guardian.
    - Check the RAM of a virtual machine
      The amount of random-access memory (RAM) from the hypervisor might not correspond with the actual amount seen from within the virtual machine (VM). Therefore, it is important to confirm that your VM has sufficient RAM to support your configuration.
    - Install a virtual machine
      Do this procedure to install a virtual machine (VM).
    - Expand a disk on a virtual machine
      The monitoring scope of your sensor will dictate the size requirements of your virtual hard drive. Do this procedure to adjust the size of the virtual hard drive.
    - Add a secondary disk to a virtual machine
      If the main disk is not large enough when it is first imported, you can do this procedure to add a larger virtual data disk to the virtual machine (VM).
    - Add a monitoring interface to the virtual machine
      By default, the virtual machine (VM) has one management network interface and one monitoring interface. Depending on deployment needs, it might be useful to add more monitoring interfaces to the sensor.
    - Cloud deployment
  - Container installation
  - Basic configuration
  - Additional settings
  - Compatibility Reference
  - Federal Information Processing Standards
- Administrator Guide
  Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
- 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.

Virtual Guardian installation

Before you install a virtual machine (VM), you should make sure that you are familiar with the minimum requirements, and the supported formats and software that you can use with the Nozomi Networks software products.

Virtual installations are best-suited for organizations that:

Need to separate the lifecycle of hardware from software
Are looking to centralize the management of their assets
Value the ability to easily scale their solutions

The Nozomi Networks solution is available in these formats:

When you deploy the virtual machine (VM), use a hypervisor that supports OVA or VHD file formats, such as:

VMware
HyperV
KVM
XEN

All components should be in good working condition. The overall hypervisor load must be under control, with no regular ballooning, so as to avoid unexpected behavior, such as dropped packets or overall poor system performance.

Important:

After deploying the virtual appliance and starting the VM, you must access the console and perform the basic configuration. During this process, it is mandatory to enter a valid default gateway. Without a default gateway, the system may be unable to reach external services such as the Central Management Console (CMC), update servers, or other network resources.

Guardian minimum requirements

Make sure that you have the minimum requirements to install a Guardian sensor on a VM.

4 vCPU running at 2 GHz
6 GB of random-access memory (RAM)
100 GB of minimum disk space, running on SSD or hybrid storage
2 or more network interface controller (NIC)s. The maximum number depends on the hypervisor, with one being used for management and one (or more) being used for traffic monitoring