Unable to connect to VPN in v3.4

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pheonix74
OpenVpn Newbie
Posts: 1
Joined: Mon Jul 24, 2023 10:18 am

Unable to connect to VPN in v3.4

Post by pheonix74 » Mon Jul 24, 2023 10:22 am

Hi,
I have an OVPN file generated by a TP Link router.
If I use OpenVPN Client 2.7.1.111 I am able to connect without issue. However if I use the same file with OpenVPN Client 3.4 (3121) I get the error "Authenication Failed - Server TLS version is too low".
Is anyone able to shed some light on this?
Kind Regards,
Greg

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openvpn_inc
OpenVPN Inc.
Posts: 1332
Joined: Tue Feb 16, 2021 10:41 am

Re: Unable to connect to VPN in v3.4

Post by openvpn_inc » Wed Jul 26, 2023 8:07 am

Hello Greg,

I mean, the message says it, the TLS version is too low. It's probably still using TLS 1.0 or such. You could dive into the settings of the OpenVPN Connect v3 app and set the security level to the lowest possible setting and see if that helps. But the real issue is that your OpenVPN server is using too low security settings.

There are basically 3 paths you can follow;

Use a modern app and work on getting your server updated to something that meets current security standards, like using TLS 1.2 or such.

Use a modern app and see if there are options to make it still accept the lower (older) security standards that your server still uses.

Ignore it and use an older client app that doesn't know about modern security standards because, well, it's old, and hasn't received updates for years, and is deprecated (Connect v2.7.something)

To be fair though, you're still relatively quite safe, it's just that security is a field that moves on relatively quickly in terms of newer security standards. The app is just trying to warn you of the situation.

Kind regards,
Johan
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