I understand that there is something that expires around 10 years but this install is only 3 years old.
I created all keys at one time. All are getting the same error implying that the certificate has expired. If I create a new key, it has the same error. ALL of these systems that connect to this VPN are remote and unmanned. Is there anything I can do on the server that can fix this?
The whole error when I try to use the new key (same error on the old keys)
Tue Jun 21 17:29:51 2022 VERIFY ERROR: depth=0, error=certificate has expired: CN=server_abc, serial=123
Tue Jun 21 17:29:51 2022 OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
Tue Jun 21 17:29:51 2022 TLS_ERROR: BIO read tls_read_plaintext error
Tue Jun 21 17:29:51 2022 TLS Error: TLS object -> incoming plaintext read error
Tue Jun 21 17:29:51 2022 TLS Error: TLS handshake failed