Perhaps, but this not the case with this model of router.
The mechanism seems to be different !
From what I can see when I click on the Connect button:
OpenVPN is launched and connected to the server
The firewall rules are updated
The network is restarted (I'm connected to the router by wifi and the connection is cut a few seconds before to be connected again)
When I click on the Disconnect button:
OpenVPN is disconnected form the server and stopped
The firewall rules are updated
Again the network is restarted (lost of connection to the router by wifi a few seconds)
I just want to write a script for launching or stopping the VPN client by SSH with plink from a remote computer without to have to be logged to the web interface.
Now this is possible.