Title: +038=534.001-RA001._02-Porttelefon Siedle Systemanvisning.pdf
NAT – Network Address Translation Network address translation method for automatic replacement of address information in data packets with other information, to connect various networks (e.g. private and public IP-based network). For each established connection, the request- er’s connection information and the destination are stored so that the answer can be assigned to the right requester. In the public IP-based net- work, the private network address of the requester is not known. NAT is required in IPv4 networks due to the existing shortage of IPv4 addresses. Private networks receive just one public network address instead of several. There are two different NAT methods. NAT is also used within an IP-based network for the internal separation or connection of several private networks with different net- work address spaces.