OPENVPN

root@oco:~$ sudo openvpn {user.ovpn}
 Thu Dec 10 18:42:41 2020 OpenVPN 2.4.9 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Apr 21 2020
 Thu Dec 10 18:42:41 2020 library versions: OpenSSL 1.1.1g  21 Apr 2020, LZO 2.10
 Thu Dec 10 18:42:41 2020 Outgoing Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
 Thu Dec 10 18:42:41 2020 Incoming Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
 Thu Dec 10 18:42:41 2020 TCP/UDP: Preserving recently used remote address: [AF_INET]
 Thu Dec 10 18:42:41 2020 Socket Buffers: R=[212992->212992] S=[212992->212992]
 Thu Dec 10 18:42:41 2020 UDP link local: (not bound)
 ...
 
 Thu Dec 10 18:42:41 2020 Initialization Sequence Completed
 
 * the "user.ovpn" file is the VPN key used to connect to the VPN server