DHCP
Short for Dynamic Host Configuration Protocol, DHCP is a protocol used to assign an IP address to a computer or device connected to a network automatically. Routers, switches, or servers that assign addresses to other computers using DHCP on a network make the setup and management of the network easier by not requiring the user or network admin to have to manually define each address for each computer and network device on the network.
For home network users you can setup a DHCP network by purchasing a home router, wireless router, or switch with NAT/DHCP and connect each computer to it. In order for each computer or network device to properly work on a DHCP network with any firewall setup ports 67 and 68 need to be open.
Also see: APIPA, Dynamic, Dynamic allocation, Network definitions, Port, Protocol, Static allocation