Instead, we’ll issue the command like so: If you issue arp with no mode specifier or options, it will print out the current content of the ARP table. If you’ve never used arp (which stands for Address Resolution Protocol), the command is used to manipulate (or display) the kernel’s IPv4 network neighbor cache. Most IT admins are familiar with arp, as it is used on almost every platform. The first tool we’ll use for the task is the built-in arp command. SEE: Server deployment/migration checklist (Tech Pro Research) The arp command I’m going to show you how to scan your Local Area Network (LAN) for IP addresses in use with two different tools (one of which will be installed on your server by default). How to configure networking on a Linux server (TechRepublic Premium) How industrial IoT is forcing IT to rethink networks Get instant malware filtering with Gryphon Guardian NVIDIA unveils supercomputing and edge products at SC22 Fortunately, there are some very simple-to-use command line tools that can handle this task. But what if you’re on a GUI-less server? You certainly won’t rely on a graphical-based tool for scanning IP addresses. How many times have you tried to configure a static IP address for a machine on your network, only to realize you had no idea what addresses were already taken? If you happen to work with a desktop machine, you could always install a tool like Wireshark to find out what addresses were in use.
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