@skaaptjop:
Could you describe what you meant by "single OpenVPN configuration file"?
Sure.
All my users are using the exact same OpenVPN configuration file(s), but every user can login with his own Active Directory login. The files are
OpenVPN Configuration file
Security certificate
Key file
Each user has to import those three files in his […]OpenVPN/config/ directory to be able to connect to pfSense VPN. If they connect with this connection/settings, they will see a login prompt for username and password and there they can use their Active Directory login credentials. :)
Well… At the end I just had to create one single OpenVPN configuration package and user and don't have to create always a OpenVPN configuration for each user. Also I don't have to delete all those users after they may have left the company or just don't need the access anymore.
To manage the access to pfSense, I've created a security group in our Active Directory, which has members like me and other users, which should have access to pfSense VPN. If somebody shouldn't have access anymore, I just have to remove his membership of this group. Very easy. :)