During external reconnaissance, you issue a simple HEAD request and the response header discloses "Server: Apache/2.4.54 (Ubuntu) PHP/8.1.2". To reduce this banner information leakage while leaving the site's functionality unchanged, which single Apache httpd.conf directive should you modify?
Change ServerTokens to the value "Prod"
Comment out the autoindex_module load line
Disable HTTP persistent connections with KeepAlive Off
Apache includes the ServerTokens directive to control how much detail is revealed in the Server response header. Setting it to "Prod" (ServerTokens Prod) trims the banner to just "Apache", hiding version numbers, build details, and loaded modules. Disabling KeepAlive or autoindex does not affect banner content, and enabling HTTP/2 only adds protocol support without altering header disclosure. Therefore, editing ServerTokens to the Prod level is the most direct way to minimize information exposure without impacting normal operation.
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