L

LAN

See local area network.

leased line

A high-capacity line (most often a telephone line) dedicated to network connections.

line printer daemon (LPD)

A line printer daemon service on the print server receives documents (print jobs) from line printer remote (LPR) utilities running on client systems.

LMHOSTS file

A local text file that maps IP addresses to the computer names of Windows NT networking computers outside the local subnet. In Windows NT, this file is stored in the \Systemroot \System32\Drivers\Etc directory.

local area network (LAN)

A group of computers and other devices dispersed over a relatively limited area and connected by a communications link that enables any device to interact with any other on the network.

Local Mail Delivery Agent

The component of the SMTP server that processes messages that have been received by the SMTP server and downloads the messages to the user's local computer.

loopback address

The IP address 127.0.0.1, which has been specified by the Internet Engineering Task Force as the IP address to use in conjunction with a loopback driver to route outgoing packets back to the source computer. See also loopback driver.

loopback driver

A network driver that allow the packets to bypass the network adapter card completely and be returned directly to the computer that is performing the test. See also loopback address.

LPD

See line printer daemon.