Lease time
The lease time refers to the validity period of a dynamic IP address
that a client has been given by a DHCP server.
Leased line
See Leased line
Leased line
A leased line is a permanent connection of two communication part-
ners via telecommunications network.
Line access author-
isation
See Exchange access right.
LLC
The Link Layer Control (LLC) regulates the media allocation at MAC
level.
LNS
See L2TP.
Load balancing
With load balancing, data is sent via different interfaces in order to
increase the overall bandwidth available. In contrast to Multilink,
load balancing also functions with accounts with different providers.
Loopback
In a loopback switch the sender and recipient are identical.
LTE
Long Term Evolution (LTE), also known as 4G, is a mobile commu-
nications standard with a standardised maximum data transmission
rate of 300 Mbit/s.
MAC address
The Media Access Control address (MAC address) is the hardware
address of the network adapter and is used to identify the device at
the hardware level.
Main Mode
When establishing an IPSec connection, main mode is used to im-
plement a phase 1 exchange by setting up a secure channel. See
also Aggressive mode.
Man-in-the-Middle at-
tack
In a Man-in-the-Middle attack, the attacker is physically or logically
between the two communication partners and so is able to view, and
even manipulate, the data traffic.
MD5
Message Digest Algorithm 5 (MD5) is a hash function that generates
a 128 bit hash value (checksum). See also Hash.
Media gateway
A media gateway converts the network type of digital voice, audio or
image information. For example, the signals from an ISDN network
can be converted to an IP network.
Metric
The metric is a measure for the properties of the route. The fastest
route has the lowest metric (costs). Simplified, this is connecting
bintec elmeg GmbH
Glossary
elmeg hybird 120 / hybird 130
703
