Firewalld is a dynamic firewall management tool that provides a flexible and easy-to-use interface for configuring firewall rules. It replaces the iptables service, making it easier to manage and modify firewall rules on Ubuntu 20.04.
To install Firewalld on Ubuntu 20.04, you can follow the steps below:
Open the terminal on your Ubuntu 20.04 system.
Update the package list by running the following command: sudo apt update
Install the Firewalld package using the following command: sudo apt install firewalld
After the installation is complete, start the Firewalld service with the following command: sudo systemctl start firewalld
You can also enable Firewalld to start automatically on system boot by running: sudo systemctl enable firewalld
To check the status of Firewalld, you can use the following command: sudo systemctl status firewalld
Once Firewalld is installed and running, you can configure firewall rules using the firewall-cmd command. It provides a rich set of features to manage firewall zones, services, ports, and interfaces. For example, you can open ports, allow or deny services, and define custom rules to suit your specific needs.
Firewalld provides a centralized and easy-to-use interface for managing firewall rules on Ubuntu 20.04, making it a convenient tool for securing your system.
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