Applies to ONTAP 9 Network Address Translation (NAT) Port Address Translation (PAT) Description NAT describes a situation in which to map multiple private addresses inside a local network to a IP addr...Applies to ONTAP 9 Network Address Translation (NAT) Port Address Translation (PAT) Description NAT describes a situation in which to map multiple private addresses inside a local network to a IP address before transferring the information onto another network (internet).