TMS zl Management and Configuration Guide ST.1.1.100226

B-21
Glossary
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.
operating mode A functionality set for the TMS zl Module, either routing (Layer 3) or monitor
(IDS).
operator account An administrative account with read-only privileges.
orphaned access
policy
A firewall access policy that is configured to affect traffic in the same TMS
VLAN. Orphaned policies cannot be enforced by the TMS zl Module because
the policies operate at Layer 3, whereas the traffic between devices on the
same TMS VLAN is at Layer 2.
OSPF Open Shortest Path First. A layer-3 router protocol that uses Dijkstra’s
algorithm to calculate the shortest path across routers to a destination. For
more information, see the IETF OSPF working group at http://www.ietf.org/
html.charters/ospf-charter.html.