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 ...

The command line isn't just for wise Linux beards. It's actually an awesome tool with almost limitless functionality. Here's a primer on how it works, and how you can do almost anything with it. Note: ...

Jack Wallen shows you how to clear the Address Resolution Protocol cache and how to manage that cache with a few command switches. The Address Resolution Protocol (ARP) cache is a crucial component of ...