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The Address Resolution Protocol (ARP) is a communication protocol for discovering the link layer address, such as a MAC address, associated with a internet layer address, typically an IPv4 address. The protocol, part of the Internet protocol suite , was defined in 1982 by RFC 826 , which is Internet Standard STD 37.
Automatic repeat request (ARQ), also known as automatic repeat query, is an error-control method for data transmission that uses acknowledgements (messages sent by the receiver indicating that it has correctly received a message) and timeouts (specified periods of time allowed to elapse before an acknowledgment is to be received) to achieve ...
Locus Address Resolution Protocol: 0x5C 92 MTP Multicast Transport Protocol: 0x5D 93 AX.25 AX.25: 0x5E 94 OS KA9Q NOS compatible IP over IP tunneling: 0x5F 95 MICP Mobile Internetworking Control Protocol: 0x60 96 SCC-SP Semaphore Communications Sec. Pro 0x61 97 ETHERIP Ethernet-within-IP Encapsulation RFC 3378: 0x62 98 ENCAP Encapsulation ...
An ARP cache [1] is a collection of Address Resolution Protocol entries (mostly dynamic), that are created when an IP address is resolved to a MAC address (so the computer can effectively communicate with the IP address). [2] An ARP cache has the disadvantage of potentially being used by hackers and cyberattackers (an ARP cache poisoning attack).
The modern "reverse DNS lookup" should not be confused with the now-obsolete "inverse query" (IQUERY) mechanism specified in RFC 1035: Inverse queries take the form of a single resource record (RR) in the answer section of the message, with an empty question section. The owner name of the query RR and its time to live (TTL
Proxy ARP is a technique by which a proxy server on a given network answers the Address Resolution Protocol (ARP) queries for an IP address that is not on that network. The proxy is aware of the location of the traffic's destination and offers its own MAC address as the (ostensibly final) destination. [ 1 ]
ID - A 16-bit identifier assigned by the program that generates any kind of query. QR - Query/Response. OPCODE - A 4-bit field that specifies the kind of query in this message. This value is set by the originator of a query and copied into the response. This specification defines the behavior of standard queries and responses (opcode value of ...
arping is a software utility for discovering hosts on a computer network by sending link layer frames using Address Resolution Protocol (ARP) requests addressed to a host identified by its MAC address. [1] The utility may use ARP to resolve an IP address provided by the user.