NAT stands for "Network Address Translation".....
A NAT Firewall is one where the communication to the internet all passes through a router/modem/gateway device which has an IP address assigned by the ISP which is in a totally different address range than the Local Area Network addresses that are on the other side of that device....in other words, there is no direct connection from the internet to your computer. So if your router is assigned an address of 206.155.74.233 as an example, and it then serves data that comes to it at that address out to all the devices behind the router on the Local Area Network all within the 192.168.1.xxx range ---- those devices are all isolated from the Wide Area Network coming into the router at the 206.xxx.xxx.xxx address.
Artie, this means that your 192.168.1.1 LAN address is totally isolated from Rita's 192.168.1.1 LAN address.......there are a minimum of at least TWO NAT firewalls separating them from each other.
