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 ...

One useful tool for diagnosing network troubles is the arp command — a tool which allows you to display the IP address to hardware (MAC) address mappings that a system has built so that it doesn’t ...

It isn’t often that old hacking methods make significant news, but an ARP attack received widespread attention earlier this week, more so for the perceived target than for the actual attack itself. In ...

I'm trying to find out why I am seeing so many Arp requests on the network. We are running two WINS servers that are replicated with DNS and Active Directory. I'm pretty sure it isn't a virus, but why ...

When your computer first connects to a nework, it sends out a request on the network to lease an IP from the router. The router then leases your computer an unused IP address, which is used as a ...