Information
All forms of authentication other than CAC must be disabled. Password authentication can be temporarily re-enabled for emergency access to the local SSO domain accounts but it must be disable as soon as CAC authentication is functional.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
Solution
From the vSphere Client go to Administration >> Single Sign-On >> Configuration >> Smart Card Authentication. Next to 'Authentication methods', click 'Edit'. Click the 'Enable smart card authentication' radio button and click 'Save'.
To re-enable password authentication for troubleshooting purposes, run the following command on the vCenter server:
/opt/vmware/bin/sso-config.sh -set_authn_policy -pwdAuthn true -winAuthn false -certAuthn false -securIDAuthn false -t vsphere.local