The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

DHCP Dynamic Host Configuration Protocol

The program used on client-server networks, as opposed to peer-to-peer networks. When a network uses DHCP, the network includes a DHCP server that automatically assigns IP addresses to computers on the network as needed. Each time that a computer disconnects from the network and then reconnects, the DHCP server assigns a new IP address. Most client-server networks have either a DHCP server or a Bootp server. Bootp is a program that performs the same function as DHCP. When a computer is not on a network, or the network does not have a DHCP server or similar server, then the computer uses a static IP address. The computer static IP address does not change until is it changed manually. A static IP address is retained during a system restart.

A TCP/IP protocol that provides dynamic configuration of host IP addresses and enables individual computers on an IP network to extract configuration parameters from a DHCP server. DHCP lets a system administrator supervise and distribute IP addresses from a central point in the network.

A TCP/IP facility for dynamic assignment of an IP address to network hosts.