What role does a firewall serve?

A firewall plays a crucial role in network security by monitoring and controlling the traffic that flows in and out of a network. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. By allowing or denying traffic based on predetermined security rules, a firewall helps protect the network from unauthorized access, attacks, and potential breaches.

In addition to controlling data packets, a firewall can log traffic, provide alerts for suspicious activity, and enforce policies that govern what types of data can enter or leave the network. The core function of a firewall is to safeguard the network's integrity and protect sensitive information, making monitoring and control of network traffic its primary role. This functionality is essential for maintaining a secure computing environment, especially for organizations that handle sensitive data.