In this section, you gained insights into:

Firewalls:
Understanding the purpose and role of firewalls in network security.

What Is a Firewall?:
Exploring the definition and functionality of firewalls as a protective barrier for networked systems.

Packet Filtering:
Understanding the concept of packet filtering, a technique used by firewalls to control network traffic.

Firewall Generations:
Exploring different generations of firewalls, each with its own set of features and capabilities.

Firewall Interfaces and Tools:
Learning about interfaces and tools for interacting with firewalls to configure and manage their settings.

Why We Are Not Working with iptables:
Understanding the choice of not working directly with iptables and opting for higher-level tools like firewalld.

firewalld and firewall-cmd:
Introduction to firewalld and firewall-cmd, tools for configuring and managing firewalls in Linux.

firewalld Service Status:
Understanding how to check the status of the firewalld service.

Zones:
Exploring the concept of zones in firewalld, which categorize network connections based on security levels.

Zone Management Examples:
Practical examples of managing zones in firewalld for enhanced network security.

Source Management:
Learning about source management in firewalld, controlling the source of incoming network traffic.

Service Management:
Understanding how to manage services in firewalld, allowing or restricting specific types of traffic.

Port Management:
Exploring port management in firewalld, controlling access to specific network ports.

Quiz 29.1: Change Listening Port:
Testing your knowledge through a quiz focused on changing the listening port, reinforcing your understanding of firewall configuration.

Quiz 29.2: Redirect Inbound Traffic:
Testing your knowledge through a quiz focused on redirecting inbound traffic, reinforcing your understanding of advanced firewall configurations.