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What does "firewall" mean in programming?
firewall is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A network security system that monitors and controls incoming and outgoing traffic based on predefined rules. Firewalls block unauthorized access while allowing legitimate traffic through.
Example
"Configure the firewall to allow traffic only on ports 80 and 443."
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