Definition
A firewall is a network security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It establishes a barrier between trusted internal networks and untrusted external networks such as the internet.
Frequently Asked Questions
Related Terms
Intrusion Detection System
An Intrusion Detection System (IDS) is a security tool that monitors network traffic or system activities for malicious behavior or policy violations. It alerts security teams when suspicious activity is detected, enabling rapid investigation and response.
Network Security
Network security encompasses the policies, practices, and technologies designed to protect the integrity, confidentiality, and accessibility of computer networks and data. It includes both hardware and software solutions that defend against unauthorized access and cyber threats.
Zero Trust
Zero Trust is a security framework that requires all users, devices, and applications to be verified, authenticated, and continuously validated before being granted access to resources, regardless of whether they are inside or outside the network perimeter.
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