Configure an internal firewall

Do this procedure to configure the internal firewall to restrict access to components such as: the management interface, the secure shell (SSH) terminal, the simple network management protocol (SNMP) service, and internet control message protocol (ICMP) of the full stack edition.

To limit access to these services, you must use the command-line interface (CLI) to add the required configurations.

  1. In the top navigation bar, select Administration icon - which looks like a gear cog
    The administration page opens.
  2. In the Settings section, select CLI.
    The CLI page opens.
  3. In the CLI, enter the necessary configuration lines.
    Note: For example, the lines below permits connections only from networks 192.168.55.0/24 or from the host 10.10.10.10:
    conf.user configure system firewall https 192.168.55.0/24, 10.10.10.10
  4. Log into the text console, either directly, or through secure shell (SSH).
  5. To apply the new settings, enter this command: 
    n2os-firewall-update
The internal firewall has been configured.