I am a newbie regarding openvpn and cannot find a way to properly revoke a client certificate. I need to work on the openvpn server only because the client is no more accessible.
I am running a openvpn server and a customer which owns a remote client disconnected it. I need to avoid them reconnecting (forever) because of security reasons: it is possible they tampered with the unit in the meantime.
The openvpn server has been installed eons ago and it looks like something is missing.
OpenVPN server disable and reenable clients does not work because
/easy_rsa/vars is missing.
How to Revoke an SSL/TLS Certificate needs
easyrsa that is also missing.
Is there something I can do to completely cut them out?