How do I know if I have a VPN connection on my NAS?

1. Go to the admin setting of your NAS and enable the connection via ssh.
2. Then open an application to connect to your NAS. On a Windows device this is the application called "Putty client", for linux you can use the standard terminal and on a macOS via your login and password.
3. Connect to your NAS
4. Activate the command "curl ipinfo.io".

The same command/instructions can be used for Linux devices without GUI.