Private web servers must require certificates issued from a DoD-authorized Certificate Authority.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-6531WG140WG140 W22SV-33106r1_rule2018-12-241
Description
Web sites requiring authentication within the DoD must utilize PKI as an authentication mechanism for web users. Information systems residing behind web servers requiring authorization based on individual identity must use the identity provided by certificate-based authentication to support access control decisions.
ℹ️ Check
Locate the Apache httpd.conf file. If unable to locate the file, perform a search of the system to find the location of the file. Open the httpd.conf file with an editor such as notepad, and search for the following uncommented directive: SSLVerifyClient If SSLVerifyClient is not set to “require” this is a finding as the client is not required to present a valid certificate.
✔️ Fix
Set the SSLVerifyClient directive to "require".