Which tool would Marco use to discover other resources within an organization's network after exploiting a perimeter firewall vulnerability?

The most appropriate tool for discovering other resources within an organization's network after exploiting a perimeter firewall vulnerability is Nmap. This tool specializes in network scanning and enumeration, allowing a user to discover hosts and services on a computer network. It can provide information such as open ports, running services, and operating system details, which is invaluable for understanding the network's layout and any additional vulnerabilities that may be present.

Nslookup is primarily used for querying DNS to obtain domain name or IP address mapping information. While useful for gathering some information about network resources, it does not facilitate the broader scanning and enumeration of hosts that Nmap does.

Netcat is a versatile networking utility that can read and write data across network connections. It can be used for banner grabbing or as a backdoor, but it is not designed specifically for network discovery and does not provide comprehensive scanning capabilities.

Wireshark is a packet analysis tool that captures network traffic. While it can be instrumental in inspecting data as it travels over the network, it does not perform the active scanning and mapping functions needed to uncover a wide range of resources on a network effectively.

Thus, Nmap is the most suitable choice for the task at hand since it offers robust scanning capabilities to identify resources on a network after gaining