Hi Kim kim.
you would get more appropriate advise for OpenVPN from:
https://forums.openvpn.net/
Also see the OpenVPN HOWTO located there ..
The manual page can also be very helpful:
https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage
The openvpn users mailing list is also a great source
A certificate certifies whatever it says it certifies,
nothing else.
More precisely, an X.509 certificate of the kind used with
OpenSSL, OpenVPN etc. certifies that:
The secret private key that corresponds to the public
key listed in the certificate is known only to something
or someone fo