How does a firewall protect a server?

A firewall is a critical security component that acts as a barrier between a trusted internal network and untrusted external networks, such as the internet. Its primary function is to monitor and control incoming and outgoing network traffic based on predetermined security rules. By doing so, it helps prevent unauthorized access to server resources and ensures that harmful data or traffic does not compromise the security of the server.

The firewall analyzes all traffic that attempts to enter or leave the server, allowing or blocking it according to established security policies. This protects the server from various threats such as cyberattacks, malware, and unauthorized access, significantly enhancing overall server security.

While other options touch upon aspects related to server operation, they do not specifically address the protective function of a firewall; hence, they do not accurately represent how a firewall contributes to server security.