FQDN in OpenVPN SSL site to site

[svenny]

Hi all, I'm trying to realize a site to site VPN throught OpenVPN. I'm following this link:

Setup SSL VPN site to site tunnel

At some point in the page it states the following:

Leaf Certificate - Type Server - Site B: Set the Common Name to the FQDN of this machine.

Is it mandatory to insert a real DNS name as the FQDN or is it possible to use a public static IP address?

Many thanks in advance.

Cheers

[ludarkstar99]

it's not mandatory a "real" dns name for certificate common name for this purpose. in doubt use the internal dns name like fw01.doe.it.
but keep in mind: the name you insert there gonna be displayed in the connection status.