Which kind of objects can be used to define a group of IP addresses for a firewall rule?

The correct choice of Network Address Objects is essential in defining groups of IP addresses for firewall rules because these objects specifically represent a single IP address, a range of IP addresses, or an entire subnet. This capability allows administrators to create rules based on various network environments or to manage access effectively across different segments of the network.

Network Address Objects facilitate more complex firewall rules by allowing the grouping of multiple addresses that can be referenced in policies. This means that when a firewall rule is created, using these objects helps streamline the configuration process and enhances manageability by allowing changes to be made in one location rather than adjusting individual rules scattered throughout the configuration.

While other types of objects also play roles in firewall configurations—Service Objects relate to applications and services, IP Address Objects represent singular addresses, and Group Objects typically combine several objects for more complex configurations—they do not specifically focus on defining groups of addresses for rules the way Network Address Objects do. Therefore, the choice of Network Address Objects distinguishes itself by enabling the targeted management of IP address groups tailored for firewall rules.