What is Firewall Security?

Firewall security is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Acting as a barrier between a trusted internal network and untrusted external networks (like the internet), firewalls aim to prevent unauthorized access to or from the private network. They are commonly used to protect computer systems and networks from malware, hackers, and other cyber threats by blocking malicious traffic and allowing legitimate traffic to pass through.