WG520 W22 - Web server and/or operating system information must be protected.
The web server response header of an HTTP response can contain several fields of information including the requested HTML page. The information included in this response can be web server type and version, operating system and version, and ports associated with the web server. This provides the malicious user valuable information without the use of extensive tools.
Ensure the web server is configured to not advertise the web server and operating system information to the client.