Explore a metered connection and add additional firewall roules therefore

[franke12359]

The task is

1. to explore if a client is connected with a metered (costly) connection and
2. add additional firewall roules to disable automated update and backup operations

Are there any ideas to use a existing solution ?

the first step is to eplore, if a client uses a metered connection. the client ip may tested at https://ip-api.com/
i have no idea for the second step.