The way dynamic NAT differs from static NAT is that where static NAT provides a one-to-one internal to public static IP address mapping, dynamic NAT doesn't make the mapping to the public IP address static and usually uses a group of available public IP addresses.
Существует 3 базовых концепции трансляции адресов: статическая (Static Network Address Translation), динамическая (Dynamic Address Translation), маскарадная (NAPT, NAT Overload, PAT).