ARP
Arp (address resolution protocol)
Arp (address resolution protocol)
In a Local hosts file.
ARP - Address resolution protocol (ARP) enables the packaging of IP data into ethernet packages. It is the system and messaging protocol that is used to find the ethernet (hardware) address from a specific IP number. Without this protocol, the ethernet package could not be generated from the IP package, because the ethernet address could not be determined RARP - Reverse address resolution protocol (RARP) is used to allow a computer without a local permanent data storage media to determine its IP address from its ethernet address. Fore More information you can visit this website:-http://www.iyogibusiness.com
The protocol used to discover a physical address from a known logical address is the Address Resolution Protocol (ARP). ARP operates by broadcasting an ARP request message on the local network, which contains the known logical address (IP address) and asks for the corresponding physical address (MAC address). The device that owns the requested IP address responds with an ARP reply message, providing its physical address. This process enables devices on the same local network to communicate effectively.
If a device does not receive an IP address from a DHCP server, it may resort to using a link-local IP address, often in the range of 169.254.0.1 to 169.254.255.254. This automatic configuration allows the device to communicate with other devices on the same local network segment without needing a DHCP server. This process is part of the Automatic Private IP Addressing (APIPA) protocol.
Obtaining an IP address refers to the process by which a device connects to a network and is assigned a unique identifier, known as an Internet Protocol (IP) address. This address allows the device to communicate with other devices over the internet or a local network. It can be assigned statically (fixed) or dynamically (temporary), typically through a DHCP (Dynamic Host Configuration Protocol) server. Essentially, obtaining an IP address is crucial for enabling data exchange and network connectivity.
A computer uses the Address Resolution Protocol (ARP) to find another machine's MAC address. When it needs to communicate with another device on the same local network, it sends out an ARP request, which is a broadcast message that asks, "Who has this IP address?" The device that owns that IP address responds with its MAC address. Once the requesting computer receives the MAC address, it can then send data directly to the intended device.
An IP address is a 4-byte (32-bit) number, used to identify a computer. This is often configured into the computer; or the IP address of a computer is handed to the computer, at startup, by a DHCP server. It is not generally coded into hardware, although certain networking equipment might have, in hardware, a default address such as 192.168.0.1 (this is a private address). For the most part, the IP address is none of the options you specify - it is neither hardware, nor software; it is information used by the hardware and software.
MAC spoofing involves changing the Media Access Control (MAC) address of a network interface to impersonate another device on a local network. In contrast, ARP spoofing targets the Address Resolution Protocol (ARP) by sending false ARP messages, linking an attacker’s MAC address to the IP address of a legitimate device, which can lead to data interception or network disruption. While both techniques aim to deceive network protocols for malicious purposes, MAC spoofing focuses on the hardware address, whereas ARP spoofing manipulates the mapping between IP and MAC addresses.
A hardware address of ff ff ff ff ff ff is a broadcast MAC address in Ethernet networks. This address is used to send packets to all devices on a local network segment, allowing communication with every device connected to that network. When a frame is sent to this address, all network interfaces on the same broadcast domain will receive and process the packet.
An IPv6 device is automatically assigned a link-local address, which is a type of address that is used for communication within a local network segment. This address is generated using the device's MAC address and the prefix "FE80::/10". Link-local addresses are essential for functions such as neighbor discovery and are not routable beyond the local link.