Address Resolution Protocol (ARP) is a protocol that maps dynamic IP addresses to permanent physical machine addresses in a local area network (LAN). The physical machine address is also known as a ...

In March we introduced the Address Resolution Protocol (ARP), a half-brother to the TCP/IP stack that maps the logical IP address space into the real world of Ethernet hardware addresses. We didn’t ...

What is Reverse Address Resolution Protocol (RARP)? Reverse Address Resolution Protocol (RARP) is a protocol a physical machine in a local area network (LAN) can use to request its IP address. It does ...

There’s a Terminal command called arp that lets you find network devices on your local area network (LAN). It will show IP addresses and MAC addresses, and is useful for troubleshooting and other ...