How To Install FirewallD on Rocky Linux 9

To install FirewallD on Rocky Linux 9, follow the steps below.

Step 1 : Ensure your system is up to date by running the following command:

sudo dnf update

Step 2 : If FirewallD is not already installed, install it using the following command:

sudo dnf install firewalld

Step 3 : Start the FirewallD service with the following command:

sudo systemctl start firewalld

Step 4 : Enable FirewallD to start at boot using the following command:

sudo systemctl enable firewalld

Step 5 : Verify the status of FirewallD to ensure it is active and running:

sudo systemctl status firewalld

Step 6 : Begin configuring FirewallD by adding rules for specific services or ports. For example, Add a rule to allow incoming traffic on port 80 (HTTP)

sudo firewall-cmd --add-port=80/tcp --permanent
sudo firewall-cmd --reload

Congratulations! You have successfully installed and configured FirewallD on Rocky Linux 9.