Dynamic Address Translation (DNAT) is an improved procedure of Network Address Translation
(NAT). With the DNAT procedure, the router
only translates theIPv4 address, but not the port number, as with Network Address Port Translation
(NAPT). Thedynamic method is used
foraddress mapping from many internal computers
to a few public IPv4 addresses, whereas Static Network Address Translation (SNAT) is used for address translation in private networks.