How do firewalls aim to address malware threats?

Firewalls are designed to serve as a barrier between trusted internal networks and untrusted external networks, and one of their primary functions is to detect and block malicious software. This capability is fundamental to their role in cybersecurity. Firewalls utilize various techniques, such as signature-based detection, heuristics, and behavior analysis, to identify malware that may attempt to enter a network through various channels, such as suspicious downloads, email attachments, or other types of incoming traffic.

By actively monitoring traffic and applying predefined security rules, firewalls can prevent malware from infiltrating systems and spreading within the network. This proactive approach helps to maintain the integrity and security of the data and resources within the network by eliminating or mitigating threats before they cause harm.

In contrast, other options do not accurately describe the primary goals of firewalls in the context of malware protection. For instance, promoting user software installations does not relate to security; allowing all traffic without monitoring would expose the network to threats; and while system restoration is important for recovery, it is not a preventive measure against malware attacks. Therefore, focusing on the detection and blocking of malicious software is the cornerstone of how firewalls effectively address malware threats.