What term describes the private IP address of a device inside the NATed network?

• A. Inside Local
• B. Inside Global
• C. Outside Local
• D. Outside Global

Answer: (A)

Inside local is the address used for a device inside the NAT’d network. It represents the private IP assigned to the host inside the local network (often a RFC 1918 address) as it exists on the inside of the NAT device. When that traffic goes out to the Internet, the NAT device translates it to an outside address that represents the same device on the global Internet, called the inside global address. The other terms describe addresses from different viewpoints: outside local is how an outside host’s address looks from inside the network, and outside global is the actual public IP address of that outside host on the Internet. So the private address of a device inside the NAT network is described as inside local.