Firewall Diagram for Network Security

This visual metaphor illustrates the critical role of a firewall in network security. The sequence begins with a flat, red-outlined structure, perhaps hinting at a basic or theoretical barrier. Next, a plain grey block might represent an unprotected network, exposed and vulnerable. Finally, the image evolves into a robust, three-dimensional brick wall with orange accents, symbolizing a strong, active, and multi-layered firewall successfully defending a system. It effectively conveys the transformation from an unprotected state to a secured environment, emphasizing the firewall's role in filtering and safeguarding digital assets.

firewall - network security - cybersecurity - protection - digital barrier - defense - network - illustration