Linux Operating System: A Complete Linux Guide for Beginners - Firewall

The video tutorial explains the importance of firewalls in network security, especially for system administrators. It covers basic commands to enable and check the status of firewalls using UFW, and discusses how to manage ports and user access. Advanced configurations, such as IP restrictions and SSH access, are also explored. Practical examples demonstrate how to manage firewall rules, including enabling, denying, and deleting rules, as well as resetting the firewall to its default state.

What is the primary function of a firewall in a network?

Explain how you can restrict users based on their origin when configuring a firewall.

What command is used to enable the firewall on a computer?

Describe the process of checking the status of a firewall and what information it provides.

How can you allow HTTP traffic through the firewall?

What steps would you take to deny access to a specific IP address using the firewall?

What does the command 'sudo UFW reset' accomplish?