> If not for NAT, we'd all need a firewall You still need a firewall regardless of NAT. Otherwise, every time you take your computer outside of your home, you'

> If not for NAT, we'd all need a firewall You still need a firewall regardless of NAT. Otherwise, every time you take your computer outside of your home, you're no longer protected. Any attacker or compromised device on your hotel, airport, or coffee shop wifi network would have direct access to your machine.