Short for Address Resolution Protocol, a network layer protocol used to convert an IP address into a physical address (called a DLC address), such as an Ethernet address. A host wishing to obtain a physical address broadcastsan ARP request onto the TCP/IP network. The host on the network that has the IP address in the request then replies with its physical hardware address.
There is also Reverse ARP (RARP)which can be used by a host to discover its IP address. In this case, the host broadcasts its physical address and a RARP server replies with the host’s IP address.
The precursor to the Internet, ARPANET was a large wide-area network created by the United States Defense Advanced Research Project Agency (ARPA). Established in 1969, ARPANET served as a testbed for new networking technologies, linking many universities and research centers. The first two nodes that formed the ARPANET were UCLA and the Stanford Research Institute, […]
- ARP spoofing
(n.) Also referred to as ARP poison routing (APR) or ARP cache poisoning, a method of attacking an Ethernet LAN by updating the target computer’s ARP cache with both a forged ARP request and reply packets in an effort to change the Layer 2 Ethernet MAC address (i.e., the address of the network card) to […]
(1) Acronym for Automatic Repeat reQuest. A function of a modem that enables it to detect flawed data and request that it be retransmitted. (2) Short for advanced RISC computing, a reduced instruction set computer (RISC) based computer architecture standard, associated with the ACE consortium. The Advanced RISC Computing Specification (ARC Spec) defines the architecture […]
ARccOS is a digital copy protection system developed by Sony and is available for some DVD-Video. is designed to prevent the creating of unauthorized DVD copies in high-quality. Each ARccOS guarded DVD-Video can be equipped with a different encryption code. The digital signature protects the DVD-Video by preventing 1:1 duplication, ripping, recompression and unauthorized mass […]
Acronym for Autonomous System An Autonomous System (AS) is a group of networks under mutual administration that share the same routing methodology. An AS uses an internal gateway protocol and common metrics to route packets within the AS and uses an external gateway protocol to route packets to other Autonomous Systems.