TMS zl Management and Configuration Guide ST.1.1.100430

B-21
Glossary
NAT Network Address Translation. A method of reusing IP addresses wherein
endpoints inside one network have IP addresses that are different from those
that are presented to the Internet or another network. For more information,
see RFC 3022 at http://www.ietf.org/rfc/rfc3022.txt.
NAT policy A rule that defines which addresses are translated, what they are translated
into, and under what circumstances
NAT-T NAT-Traversal. An IKE method for UDP encapsulation of ESP packets so that
they pass better through firewalls. For more information, see RFC 3947 at
http://www.ietf.org/rfc/rfc3947.txt and RFC 3948 at http://www.ietf.org/rfc/
rfc3948.txt.
NAT address The IP address assigned by the NAT operation. For example, if 10.10.10.10 is
translated into 192.168.2.1, then 192.168.2.1 is the NAT address.
NAT policy A policy on the TMS zl Module that determines which traffic needs to be
translated, how it should be translated, and under what circumstances.
NAT pool A set of IP addresses that are reserved for NAT. These addresses are not used
on the network, but will instead be used as the NAT address of a packet that is
translated.
network address
object
An address object that contains one or more subnet addresses in CIDR format.
network
authentication
The process that requires users to submit credentials to an authentication
server before they can access the network. The TMS zl Module contains an
authentication server or it can relay messages from a remote RADIUS server.
network interface The physical interface that connects two network devices. For example, on
the TMS zl module, port 1 is the interface that serves as an uplink between the
module and the host switch.
NSSA Not-So-Stubby Area. An OSPF area that connects another area to an untrusted
network.
O
one-to-one A NAT operation wherein each internal IP address is assigned its own unique
NAT address.
Open Shortest
Path First
See OSPF.