Subject: Ubuntu OpenVPN Server and Industrial VPN Router OpenVPN Client :


Please send a new backup.

Please remove last 2 lines in your hms_client.ovpn file

You’re on your own with this. Can you ping the Flexy from the OpenVPN server? If not, find out why.


I attached a new backup of flexy. Check it & revert back.

After removing two lines in my hms_client.ovpn file i also have same error like Options error: Unrecognized option or missing parameter(s) in /var/run/OpenVPN-qyhtri:1: client (2.0.9). I also check the ping from Openvpn server to flexy. It looks fine.
Which version of openvpn use for communication for the same?



Hey kyle,

We have one customer that have their own cloud (amazon AWS server )and wants to communicate with eWON rather than talk2M

Is it possible to connect flexy with third party amazon AWS server ?

They have an urgent requirement like this…can u help me as soon as possible?

And please give us the feasibility of the same.


Yes, you can run OpenVPN on public cloud. However, it is not officially supported by HMS. The OpenVPN instructions above were put together by the Americas region (who runs If you have a project where you need urgent support, you need to contact and work with your local HMS support team. You can open a ticket with them by going to . Since you are in India, I am unable to officially take your case, but I can provide some support through the forum. I would recommend starting fresh with the above instructions being especially careful to complete each step. Your settings look ok but something must be wrong with your keys. I am going to be working on cleaning up the instructions and making them easier to follow in the future.


Hi kyle,

I have tested hms_client.ovpn file (Ubuntu VPN Client) with Ubuntu VPN Server. It communicates fine and i got ping from Ubuntu VPN Client to Ubuntu VPN Server.

I have tested that same with Windows VPN Client & Windows VPN Server and i got the same result. It communicates fine.So, I Guess there is no issue with keys.

If I use the same Server & Client configuration files in flexy it gives me an error message like Options error: Unrecognized option or missing parameter(s) in /var/run/OpenVPN-qyhtri:1: client (2.0.9).

I am using openvpn version 2.4.0. Is flexy supports the openvpn version 2.4.0 ?

I have attached Server & Client log files and Screenshots of tun network appears after Successfully run the code.

Please share your views for the same.

Serverlog.txt (22.3 KB)

Clientlog.txt (1022 Bytes)


My set up was with firmware version 13.0. Can you try with that firmware?


Hi kyle,

Gentle Reminder…


I will try and revert you…

I am using 2.4.0 openvpn server…Is flexy compitable with openvpn version 2.4.0 ?

Because in one document of hms i read eWon is based on openvpn version 2.0. it may not work in higher version of openvpn.


Yes, it has been tested with 2.4. Make sure to make a backup of the eWON because when reverting it will clear the settings.