Handshake failed

[reishiki]

Salve a tutti
Mi trovo in difficoltà con la creazione di una connessione VPN tra il mio pc personale e il mio pc in ufficio.
Come Firewall c'è pfsense, c'è già una Ca creata ma, non riuscendo a fare l'handshake ne ho creato uno ex-novo.
Ecco il mio log

Mon Jan 02 22:36:08 2017 Attempting to establish TCP connection with [AF_INET][ip_address]:[porta] [nonblock]
Mon Jan 02 22:36:09 2017 TCP connection established with [AF_INET][ip_address]:[porta]
Mon Jan 02 22:36:09 2017 TCPv4_CLIENT link local (bound): [undef]
Mon Jan 02 22:36:09 2017 TCPv4_CLIENT link remote: [AF_INET][ip_address]:[porta]
Mon Jan 02 22:36:09 2017 VERIFY ERROR: depth=0, error=unsupported certificate purpose: C=, ST=, L=, O=, emailAddress=, CN=
Mon Jan 02 22:36:09 2017 OpenSSL: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
Mon Jan 02 22:36:09 2017 TLS_ERROR: BIO read tls_read_plaintext error
Mon Jan 02 22:36:09 2017 TLS Error: TLS object -> incoming plaintext read error
Mon Jan 02 22:36:09 2017 TLS Error: TLS handshake failed
Mon Jan 02 22:36:09 2017 Fatal TLS error (check_tls_errors_co), restarting
Mon Jan 02 22:36:09 2017 SIGUSR1[soft,tls-error] received, process restarting
Mon Jan 02 22:36:12 2017 SIGTERM[hard,init_instance] received, process exiting

Sono nuovo a questi sistemi, potete darmi una mano?
Vi ringrazio anticipatamente