What is a firewall and how does it work in Linux?

Q: What is a firewall and how does it work in Linux?

> * **Definition**: A security system that controls incoming and outgoing network traffic based on configured rules. * **Function**: Decides which ports, IPs, and network services are allowed or blocked, protecting the system from unauthorized access.

💬Answer

Definition: A security system that controls incoming and outgoing network traffic based on configured rules.
Function: Decides which ports, IPs, and network services are allowed or blocked, protecting the system from unauthorized access.

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