I am an administrator in a large store. I have a router, MikroTik to manage Internet.
I need to internet customers, and I have to give all Internet.
There is an attacker between my clients with a app, MAC address changes himself and I have no way to block it. And I do not want to be connected to the network.
The first part of the MAC address is fixed and it looks like this:
He bothers me, please let me propose a solution.
Please help me.