Which NGFW core subscription alerts the firewall of a potential attack from a suspicious domain?

The correct choice is DNS Security, which plays a crucial role in identifying and mitigating potential threats originating from suspicious domains. This core subscription is designed to monitor DNS queries and responses, enabling the firewall to detect malicious domains before they can be reached. By leveraging established threat intelligence and analytics, DNS Security can alert the system about domains associated with phishing, malware, or other types of cyber threats, allowing for proactive defense and mitigation strategies.

In contrast, URL Filtering primarily focuses on controlling access to specific websites based on categories and policies rather than alerting on domain-based threats. Threat Prevention encompasses broader protection mechanisms against known vulnerabilities and exploits, whereas WildFire is primarily concerned with analyzing and identifying unknown malware through dynamic analysis techniques. These other subscriptions have their respective functionalities but do not specifically alert the firewall to potential attacks from suspicious domains like DNS Security does.