sudo mv /etc/openvpn/keys/user.crt{,.backup} sudo mv /etc/openvpn/keys/user.key{,.backup} sudo mv /etc/openvpn/keys/ca-server.crt{,.backup} sudo mv client.crt /etc/openvpn/keys/user.crt sudo mv client.key /etc/openvpn/keys/user.key sudo mv ca.crt /etc/openvpn/keys/ca-server.crt