Installing Firewalld on Ubuntu 22.04

Firewalld is a powerful and flexible firewall management service that comes with many Linux distributions, including Ubuntu. It provides a way to manage and set up firewall rules to protect your system from unauthorized network access.

Here's how you can install and configure Firewalld on Ubuntu 22.04:

sudo apt update

sudo apt install firewalld

sudo systemctl start firewalld

sudo systemctl enable firewalld

1. Update the package lists for upgrades and new package installations by running the following command:
2. Install Firewalld by running the following command:
3. Once the installation is complete, start the Firewalld service by running the following command:
4. To enable Firewalld to start on boot, run the following command:

You have successfully installed Firewalld on your Ubuntu 22.04 system. Now you can configure the firewall rules using the firewall-cmd command line tool or the graphical user interface tools, such as firewall-config.

Note: It's important to be cautious and ensure that you don't block legitimate network traffic while configuring Firewalld.