Which tool is commonly used for vulnerability scanning?

Nessus is widely recognized as a powerful vulnerability scanning tool that helps organizations identify security vulnerabilities in their systems and applications. It performs comprehensive scans by examining devices for potential weaknesses that could be exploited by attackers. Nessus checks for a range of vulnerabilities, including missing patches, configuration issues, and known software flaws, making it an essential component of a proactive security strategy. By utilizing such tools, organizations can remediate vulnerabilities before they are exploited, thereby significantly improving their overall security posture.

Firewalls, intrusion detection systems, and VPNs serve different roles in the security infrastructure. Firewalls focus on controlling inbound and outbound traffic based on predetermined security rules. Intrusion Detection Systems monitor network and system activity for malicious actions or policy violations. VPNs are used to create secure connections over the internet, providing privacy and secure communication for users. While all of these tools play important roles in security, they do not specifically focus on the identification and analysis of vulnerabilities like Nessus does.