What must match to avoid connection abortion to the FortiGuard server?

To ensure a successful and uninterrupted connection to the FortiGuard server, it is essential that the Common Name (CN) in the server certificate matches the hostname of the server you are trying to connect to. The CN serves as a critical identifier within the SSL certificate, indicating for which domain the certificate has been issued. If there is a mismatch between the CN in the certificate and the server's actual hostname, this discrepancy can lead to connection errors or abortion, as the client will not recognize or trust the certificate due to the validation failure.

This concept is vital for maintaining secure communications, as SSL/TLS certificates are designed to ensure that you are connecting to the legitimate server and not an imposter. A proper match indicates a trusted and secure connection, while a mismatch can lead to security risks and disconnection.

Other factors, while relevant to the overall connection process and security, do not directly impact the immediate connection to the FortiGuard server in the same way that the CN does. For instance, the server location must be correctly configured for network routing, the root-CA version is significant for certificate authority validation, and the OCSP status relates to the revocation status of the certificate, but none of these directly affect the initial connection abortion as critically as