Final answer:
To configure a Web Application Proxy server, external DNS records and SSL certificates are required to direct traffic correctly and to encrypt communications between the server and client devices.
Step-by-step explanation:
To configure a Web Application Proxy server in the perimeter network, the required information typically includes external DNS records and SSL certificates. This is because the Web Application Proxy serves as an intermediary between users on the external network and the applications hosted within your internal network. As such, it needs to know how to direct traffic properly, which is managed by DNS, and it must securely encrypt communications, which is handled by SSL certificates.
Configuring a Web Application Proxy server correctly is crucial for both the functionality and security of the applications it serves. The external DNS records ensure that requests from users are directed to the correct server, and the SSL certificates encrypt the communication between the client devices and the Web Application Proxy, safeguarding the transfer of sensitive data.