TMS zl Management and Configuration Guide ST.1.1.100430

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Glossary

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.

out-of-sequence

packets

An attack check performed by the TMS zl Module that drops packets that are

received out of order.

outbound

authentication

key

The manual authentication key that a remote device expects to receive from

a local device when establishing a VPN.

outbound

encryption key

The manual encryption key that a remote device expects to receive from a

local device when establishing a VPN.

packet flow The logical path of a packet through a device, such as the TMS zl Module.

PAP Password Authentication Protocol. A protocol used to authenticate a client

to a remote server or an Internet service provider. PAP transmits usernames

and passwords in unencrypted plaintext, making it unsecure. For more infor-

mation, see RFC 1334 at http://www.ietf.org/rfc/rfc1334.txt.

participant A member of an HA cluster that relies on the master to receive data.

passive mode A RIP V LAN mo de in whi ch the VLAN receives routing tables from other routers

but does not broadcast its own routing table.

passphrase A passphrase is a password that is used for authentication or encryption. A

passphrase is typically more complex than the average password.

PAT Port Address Translation. A type of destination NAT where the port is trans-

lated as well as (or instead of) the IP address.

path MTU See PMTU.