What is the primary function of a firewall in a network?

The primary function of a firewall in a network is to block unauthorized access and control both incoming and outgoing traffic. Firewalls serve as a security checkpoint between trusted internal networks and untrusted external networks, such as the internet. They analyze the data packets that pass through them and apply predefined security rules to determine whether to allow or block specific traffic.

By doing so, firewalls help protect networks from potential security threats, unauthorized access attempts, and various attack vectors, ensuring that sensitive data and systems remain secure. This role is crucial in maintaining the integrity and confidentiality of network resources and safeguarding user data from cyber threats.

While monitoring network traffic is an important function, it is a part of the broader task that firewalls perform. Similarly, device storage and enhancing wireless connectivity are unrelated to the primary purpose of a firewall, as these functions pertain to different aspects of network design and operation.