On Wed, Aug 30, 2023 at 5:36 PM, Gert Doering
<g...@greenie.muc.de> wrote:  >Hi,

>On Wed, Aug 30, 2023 at 01:53:40PM +0000, >Jason Long via Openvpn-users wrote:
> Thank you so much for your reply.
> As I understand, The "ca.crt" and "ta.crt" keys  >are mandatory. I disabled 
> the "ta.crt" in >Client.ovpn file and I got the following error:

>ta.crt is outside the "basic" TLS handshake, so >a different thing - and
>if used, must be used on both sides.

> Wed Aug 30 17:36:57 2023 TLS Error: TLS key >negotiation failed to occur 
> within 60 seconds >>(check your network connectivity)
> Wed Aug 30 17:36:57 2023 TLS Error: TLS >handshake failed
> 
> Why the following files must exist in the >server.conf file, when the client 
> using the >username and password authentication >method?
> 
> cert server.crt
> key server.key                            
> dh dh.pem

>For the same reason you have them in your >apache config if your web server
>offers TLS (https).  Because TLS needs a >server certificate, and Diffie-
>Hellman needs a file with DH groups.

>Maybe you really want to follow David's >suggestion and buy one of the
>OpenVPN books *and actually read it, from >beginning to end*?

>gert
 >-- 
>"If was one thing all people took for granted, >was conviction that if you 
>feed honest figures into a computer, honest >figures come out. Never doubted 
>it myself till I met a computer with a sense of >humor."
>                             Robert A. Heinlein, The Moon >is a Harsh Mistress

>Gert Doering - Munich, Germany                            >g...@greenie.muc.de

Hello,Thanks again.I will.In the end, I want to know if it is possible to 
connect the server and the client without any key?
  
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