To check if you have a VPN connection on your NAS:
- Go to the admin setting of your NAS and enable the connection via ssh.
- 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.
- Connect to your NAS
- Activate the command "curl ipinfo.io".
The same command/instructions can be used for Linux devices without GUI.