Which service definition may be included in FortiGate policies?

In FortiGate policies, NAT (Network Address Translation) rules play a crucial role as they define how IP addresses are translated for outbound or inbound traffic. Including NAT rules within the policy framework allows for control over address translation on a per-policy basis, enabling the secure and proper routing of traffic based on specific requirements.

NAT rules are essential for managing the public interaction of private network services, allowing entities within a private network to communicate with the wider internet. This can include translating private internal IP addresses to a public IP, facilitating the necessary security and functionality for a variety of network applications.

While other options like traffic shaping, logging, and URL filtering services are components of FortiGate's extensive feature set that enhances usability and security, they do not directly represent the core operational functionality in the same way that NAT rules do within a policy context. Specifically, traffic shaping is focused on bandwidth management, URL filtering is aimed at controlling web access, and logging provides insight into network activity, but none serve the same foundational purpose as NAT within the context of policy definitions.