Não é possível conectar ao servidor OpenVPN no Ubuntu 14.04 (do terminal), mas tudo está bem no Windows

Question

No Windows tudo está OK. No Ubuntu quando eu corro

sudo openvpn --config client.ovpn

Recebo estas mensagens de erro:

 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
 TLS Error: TLS handshake failed

O que devo fazer para corrigir isso? Eu já tentei mudar nobind - > ip local em client.ovpn sem sucesso.

2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 
188.226.96.50:56532 TLS: Initial packet from [AF_INET]188.226.96.50:56532, sid=b8f1f244 63645f4e'
2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 188.226.96.50:56532 OpenSSL: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol'
2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 188.226.96.50:56532 TLS_ERROR: BIO read tls_read_plaintext error'
2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 188.226.96.50:56532 TLS Error: TLS object -> incoming plaintext read error'
2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 188.226.96.50:56532 TLS Error: TLS handshake failed'
2018-01-11 07:03:11+0000 [-] OVPN 1 OUT: 'Thu Jan 11 07:03:11 2018 188.226.96.50:56532 SIGUSR1[soft,tls-error] received, client-instance restarting'

client.ovpn

configurações do servidor encontradas com 'locate .conf | grep openvpn