Yes, of course. Exposing your LAN confguration for the world to see is insanity, it's like hiding your private SSH keys in a password-protected Excel file. An

Yes, of course. Exposing your LAN confguration for the world to see is insanity, it's like hiding your private SSH keys in a password-protected Excel file. And yes, you need both NAT and firewall. They're complimentary technologies and do not replace each other.