1

If I use MAC filtering on my router to prevent internet access for a smart device e.g. IP camera, could it feasibly change the MAC address to get around this and leak data to a remote server? If so, what can robustly prevent internet access?

2

Some devices randomise their MAC on start up, and that's a trivial function, so that's a feasible scenario, though unlikely. Benign IoT devices don't tend to want to avoid detection or stable identification.

The best case is to set up a VLAN or a separate network for your IoT devices that blocks all outgoing traffic to the internet.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.