The application server must use DoW or CNSS-approved PKI Class 3 or Class 4 certificates.

Class 3 PKI certificates are used for servers and software signing rather than for identifying individuals. Class 4 certificates are used for business-to-business transactions. Utilizing unapproved certificates not issued or approved by DoW or CNS creates an integrity risk. The application server must utilize approved DoW or CNS Class 3 or Class 4 certificates for software signing and business-to-business transactions.

This requirement also applies to Zero Trust initiatives.

Review the application server configuration to determine if the application server utilizes approved PKI Class 3 or Class 4 certificates.

If the application server is not configured to use approved DoW or CNS certificates, this is a finding.

Configure the application server to use DoW or CNSS-approved Class 3 or Class 4 PKI certificates.