Term | Definition |
Acknowledge | When the DHCP server sends a final unicast to the client that includes the IP information the client will use. |
APIPA | Short for Automatic Private IP Address, this is a private range of addresses automatically assigned by a host that cannot connect to a DHCP server. |
authentication header (AH) | An IPSec component that provides connectionless integrity and the authentication of data. It also provides protection versus replay attacks. |
Discovery | A step in DORA when a client computer broadcasts out to the network in order to find a DHCP server. |
domain name system (DNS) | A worldwide service that resolves host names to IP addresses. |
DORA | Short for Discovery, Offering, Request and Acknowledge, this is the four-step process used with DHCP. |
Dynamic Host Configuration Protocol (DHCP) | A protocol that allows properly configured client computers to obtain IP addresses automatically from a DHCP server. |
encapsulating security payload (ESP) | An IPSec component that provides the same services as AH but also provides confidentiality when sending data. |
IP forwarding | LAN routing that bridges the gap between the two network adapters even if they are on two different IP networks. |
Internet Protocol Security (IPSec) | A protocol within the TCP/IP suite that encrypts and authenticates IP packets. |
Offering | When the DHCP server sends out a unicast “offering” of an IP address to the client computer. |
Remote Access Service (RAS) | A grouping of different hardware and software platforms to allow remote access to another computer or network device. |
Remote Desktop Protocol (RDP) | The protocol used when you use the Remote Desktop Connections program to connect to a computer. |
Remote Desktop Services | A type of thin-client terminal server computing. It allows client computers to access and use applications loaded on the server, as well as to connect to and take control of a server. It was previously known as Terminal Services. |
Request | In DHCP, when the client broadcasts to all servers that it has accepted the offer. |
Routing and Remote Access Service (RRAS) | A network service in Windows Server 2008, Windows Server 2003, and Windows Server 2000. It permits an administrator to configure dial-up remote access servers, VPN servers, and IP routing, as well as NAT. |
security association (SA) | The IPSec component that generates the encryption and authentication keys that are used by IPsec. |
Terminal Services | A type of thin-client terminal server computing. It allows client computers to access and use applications loaded on the server, as well as to connect to and take control of a server. |
Windows Internet Name Service (WINS) | A service that resolves NetBIOS names to IP addresses. |