Server certificate
1. Generate a Certificate Signing Request (CSR) on the FortiGate unit.
2. Copy the CSR base-64 encoded text (PKCS10 or PKCS7) into the CA software and generate the certificate.
PKCS10 is the format used to send the certificate request to the signing authority. PKCS7 is the format the signing authority can use for the newly signed certificate.
3. Export the certificate as a X.509 DER encoded binary file with .CER extension
4. Upload the certificate file to the FortiGate unit Local Certificates page (type is Certificate).