LAN

Local Area Network. A group of computer systems in close proximity that can communicate with one another through some connecting hardware and software.

layer 2

The data link layer. The OSI (Open Standards Interconnection) model has a total of seven layers. Layer 2 is concerned with procedures and protocols for operating the communication lines between networks as well as clients and servers. Layer 2 also has the ability to detect and correct message errors.

local host

The CPU or computer on which a software application is running.

local server

From the client's perspective, the most immediate server in the LAN.