How to configure traffic to go only through VPN, and in case of a drop, the traffic is blocked?

Question

VPN

help me figure it out, I think there is no need for a special description.

Answer 1

1. In the settings of the network card, remove the default gateway
2. Add one route to the VPN server.
Thus, only the VPN server will be available through the main channel, and when the connection with it is established, a new main gateway will be registered inside the VPN network.

Answer 2

try to block all traffic not from vpna subnet
:)