OpenVPN Support Forum

Good day,

There is an issue with my setup. If I am trying to establish a tunnel using TLS 1.1 or 1.2, it won't work and I'll get this error: OpenVPN Server TLS version is too low. If I am using TLS 1.0, it works fine. The VPN client is a Galaxy Tab A (Android with last firmware update)) with OpenVPN Connect 1.1.16. The VPN server is a ASUS RT-AC-68U (with last firmware update). From the server, there is no way to select TLS 1.0, 1.1, or 1.2. From the client, you can choose between those.

VPN Client



VPN Server



Any idea?


Thank you!

Does your router have a field where you can insert custom options ?

Yes it does but I don't know what to do! lol

See --tls-version-min in The Manual v23x

You could try that in the field:

This is what I've got with ''tls-version-min 1.2'':

OpenVPN server daemon failed to start.
Please check your device environment or contents on the Advanced Setting page.

Thanks again for your help!

Or maybe for compatibility on both sides.

Check your server log for the version of openvpn installed.

Got an answer back from ASUS:

Thank you for contacting ASUS Technical Support.

I really apologize for all the inconvenience caused to you. I will certianly help you out.

I have received reply from my next level of support team that TLS 1.1/1.2 is not yet supported. However they will release a firmware (ETA July, 2016) to include TLS v1.1 and v1.2.

If you need any further assistance, please feel free to contact us anytime.

Thank you for choosing ASUS.

Regards,
April K

Customer Service Center.
ASUSTek Computer Inc.

Thanks for help!

Great news .. thanks for letting us know