Can I use the Letsencrypt cert with the OpenVPN server?

[hilfubsi]

I would like to setup an OpenVPN server on my OPNsense so I can encrypt my connection when using public WiFis.

I also have Letsencrypt setup with the os-acme-client plugin.

Can I use Letsencrypt for my OpenVPN server certificate? It seems the only option is to self-sign the OpenVPN certificate in the wizard.

[elektroinside]

Theoretically, it might be possible, but you don't want to do that. You'll be better off with your own CA and sign your own certs.

[fabian]

Yes and No - Let's Encrypt has in my opinion no client certificates which is a problem however in case of password authentication it would work.
The problem is that I see no advantage since OpenVPN does not rely on a preinstalled certificates.