Final answer:
The client should provide system architecture, access credentials, and internal documentation before starting a black box penetration test for gaining access to an internal database server.
Step-by-step explanation:
Prior to starting the black box penetration test for gaining access to the information stored on an internal database server, the client should provide the following information:
- System architecture: The client should provide details about the network infrastructure, including the IP addresses, subnets, and firewalls in place.
- Access credentials: The client should provide valid user credentials, such as usernames and passwords, for the systems being tested.
- Internal documentation: It is important for the client to share any relevant documentation or system documentation that can help in understanding the server architecture, network topology, and any known vulnerabilities.