What component works in tandem with IPS to enhance network security in FortiGate devices?

Firewall Policies play a crucial role in enhancing network security when used alongside Intrusion Prevention Systems (IPS) in FortiGate devices. IPS is designed to identify and mitigate threats by inspecting traffic in real-time. However, to effectively control how traffic is handled and to define the rules for allowing or blocking specific types of traffic, firewall policies are necessary.

These policies stipulate which traffic is allowed to enter or leave the network based on criteria such as source and destination addresses, services, and applications. By integrating IPS with Firewall Policies, FortiGate devices can not only actively detect and prevent potential threats but also maintain a structured approach to traffic management, enforcing security postures that align with organizational needs.

The other options, while relevant to network security, do not function in the same tandem manner as firewall policies with IPS. For example, antivirus signatures help in scanning for malware within traffic, but they do not provide the strategic direction that firewall policies offer. Similarly, VPN tunnels focus on establishing secure connections for remote access rather than real-time traffic monitoring and control, while bandwidth controllers manage traffic flow based on bandwidth rather than security threats. Therefore, firewall policies are integral to enhancing the capabilities of an IPS in FortiGate devices.