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Cyber Security > Learn Cyber Security > What is a firewall, and how does it protect against...
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What is a firewall, and how does it protect against cyber threats?

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A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. Firewalls help protect against cyber threats by...
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A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. Firewalls help protect against cyber threats by analyzing data packets and determining whether to allow or block them based on the configured rules. These rules can be set to filter traffic based on various criteria, including IP addresses, port numbers, and protocols. By doing so, firewalls prevent unauthorized access, limit exposure to potential vulnerabilities, and help detect and block malicious activities like hacking attempts, malware, and other cyber threats. Firewalls are a fundamental component of a comprehensive cybersecurity strategy. read less
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