# CA the server trusts
#TLSCACertificateFile /var/log/proftpd/root.csr
# Authenticate clients that want to use FTP over TLS?
TLSVerifyClient off
</IfModule>
Делаем попытку коннекта и получаем в логе следующие сообщения:
Jun 02 21:45:28 mod_tls/2.0.7[6047]: using default OpenSSL verification locations (see $SSL_CERT_DIR)
Jun 02 21:45:28 mod_tls/2.0.7[6047]: error: '/var/log/proftpd/server.csr': error:0906D06C:PEM routines:PEM_r
ead_bio:no start line
Jun 02 21:45:28 mod_tls/2.0.7[6047]: SSL/TLS-P requested, starting TLS handshake
Jun 02 21:45:28 mod_tls/2.0.7[6047]: unable to accept TLS connection:
(1) error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher
Jun 02 21:45:28 mod_tls/2.0.7[6047]: SSL/TLS-P negotiation failed on control channel
Jun 02 21:45:32 mod_tls/2.0.7[6047]: SSL/TLS-P requested, starting TLS handshake
Jun 02 21:45:32 mod_tls/2.0.7[6047]: unable to accept TLS connection:
(1) error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher
Jun 02 21:45:32 mod_tls/2.0.7[6047]: SSL/TLS-P negotiation failed on control channel