[ur-whale]

> Don’t you need a basic router/nat to protect your systems?

You are under the mistaken impression that your router / NAT protects you.

It doesn't. It may mitigate some of the most basic attacks, the ones what were cutting edge in the 90s.

[mekster]

It does by not exposing the ports that aren't meant to be and only routing the traffic intended down to the local network.