TMS zl Management and Configuration Guide ST.1.1.100226

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Glossary
L
L2TP Layer 2 Tunneling Protocol. A protocol that is used in VPNs. For more
information, see RFC 2661 at http://www.ietf.org/rfc/rfc2661.txt.
L2TP access
concentrator
See LAC.
L2TP network
server
See LNS.
L2TP remote
access
Remote access that uses L2TP.
LAC L2TP Access Concentrator. A device that virtually extends an Internet connec-
tion to an LNS, which is located at the corporate network.
land attack An attack where the attacker exploits the TCP protocol by sending a stream
of TCP SYN packets that have the same source and destination IP addresses
and TCP port number.
license The document granting you the legal right to use the TMS zl Module.
link state
advertisements
See LSA.
LNS L2TP Network Server. The device that provides access to the target L2TP VPN
network.
local database A database of user credentials stored on the TMS zl Module itself.
local gateway The VPN gateway of the device that you are configuring.
local mirroring Copying all traffic transmitted on one port (the monitored port) to another
port on the same device (the mirror port). The TMS zl Module in monitor mode
uses the host switch’s local mirroring capability to monitor traffic.
local user A user in the local database.
logging The process of documenting events (usually security events) detected by the
TMS zl Module.
login banner The text that is displayed at the top of the login page.
LSAs Link-State Advertisements. Messages sent by OSPF routers that distribute
information about routers' connections to networks and to other routers.