How to filter and find out all traffic from all programs for a specific connection with the possibility of blocking?

Question

Computer networks

I want to connect a laptop to the Internet from a mobile connected via WIFI or USB modem. Interested in how to limit the use of the Internet from the mobile only on the White List.
The need is that the ports on the normal Internet are blocked by Router, and you can not fully use SSH.

Answer 1

Wireshark is here to help.