To access the firewall settings and permit / prohibit network communications on certain protocols, in the IoT Server Configuration application, you need to select the "Firewall rules" option from the left sidebar menu.
Create a new Firewall rule
To create a new or your first firewall rule, click on the Create a new firewall rule button located at the bottom right of the screen. core rules are mandatory system routes that can be changed with this application. Communication are DENY by default, from this application you add ACCEPT rules.
Upon clicking to add a firewall rule, a dialog box will emerge on the right side of the screen for configuring the rule. You will need to provide the following details:
- Rule Name: Assign a descriptive name to the rule, typically reflecting the associated service.
- Network Interface: Choose the network interface for the rule to take effect on, either a specific one or 'All'.
- Input/Output: Determine whether the rule is for inbound or outbound traffic.
- IP Address: Define the IP source or destination in CIDR format (e.g., 192.168.0/24) or as a single IP (e.g., 192.168.0.1), based on the rule's direction. The setting 0.0.0.0/0 covers all IPs.
- Specific Port/All Ports: Opt to apply the rule to a particular UDP/TCP port or to an entire IP source/range.
- Network Port Number: Enter the specific port number to link with the rule; currently, only one port can be designated.
- Protocol: Choose between TCP and UDP protocols.
Then click on Create button, the creation is confirmed by a green banner on top of the screen.
Edit an existing firewall rule
To modify an existing firewall rule (out of the core rules) click on edit icon (pencil icon) located on the right of the firewall rule line.
Then you can edit the different fields described in firewall rule creation chapter above. After editing it, save your updates clicking on Edit button.
Remove an existing firewall rule
To remove an existing firewall rule (out of the core rules) click on delete icon (trash icon) located on the right of the firewall rule line.
Then you will be asked for a confirmation for this action:
Enter the firewall rule name into the input box (1), then click on Confirm button (2). A green banner will confirm the firewall rule deletion.