PFHMIIPCCS-MM01-EN.01

Network

Improve security of networked devices by using multiple layers of cyber defense (such as firewalls, network segmentation, and network intrusion detection and protection). Disable unused ports/services and default accounts to help minimize pathways for malicious attackers.

To reduce the security risks associated with networks, follow these guidelines:

  • Use firewalls and other security devices or settings to limit access to the host network, based on your security risk assessment.

  • When using a firewall:
    Restrict communication to the expected ports, as per your network configuration. Only open those ports that are necessary for network communication.

  • When using network switches:
    Close or disable unused network ports to prevent unauthorized connection of network nodes or other devices.

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