ELI5 mode
A firewall is a security system or barrier designed to prevent the spread of fire or unauthorized access, commonly used in both physical structures and digital networks. In modern contexts, it serves as a protective gatekeeper for computers and networks, filtering out potential threats like hackers or malware while allowing safe data flow. This dual role highlights how the concept has evolved from literal fire prevention to essential cyber defense in our tech-driven world.
AI-generated·