I can assure you that the general population has no idea what half the nouns in that sentence mean, let alone how to do any of that.
The next game will probably be mitming these devices by flashing a new CA store.
There is no general solution to running an openly adversarial app/device in your network.
Keep in mind you're on HN-- we tend to be a more technical population :). If you're interested I found this on StackOverflow via Google: https://unix.stackexchange.com/questions/144482/iptables-to-...
You'll have to Google how to set up iptables/telnet or ssh on your router yourself, assuming it supports it.