NAV 2016 Tablet Certificate SSL Internal Usage

Hi All!!!

I want to use the tablet client (on iOS) for NAV 2016 internally.
I don't understand what kind of certificate I need to buy and if the installation is any different than providing external access?

I read about the self-signed certificates but MS recommends not to use it for a production environment....

I've previously bought and configured a certificate for using the tablet client on an external network and it worked fine...

Can anyone please shed some light and point me in the right direction on what is required for using the tablet client on an internal network?

I would assume that you would have two different addresses for using the client internally and externally?

Any help is greatly appreciated!

Thanks