LAN: (Local Area Network) - A computer network restricted to a limited area, usually the same building or a floor of a building. Office computers are typically connected to a LAN.

Leased-line: Refers to a telephone line that is rented for an exclusive 24-hour, 7-days-a-week connection from your location to the Internet. The highest speed data connections require a leased line.

List server: The most common kind of mailing list. List servers originated on BITNET, but are now common on the Internet.

Login: The user- or account-name used to gain access to a computer system. Also, the act of entering or "signing on" to a computer system.

Lurking: To read through mailing lists or newsgroups and get a feel of the topic before posting your own messages. It is considered good netiquette to "lurk" a while before joining an online discussion.