In networking, “ARM” usually stands for “Address Resolution Protocol (ARP) Monitoring.” Let’s break it down like you’re five years old:
Imagine you have a group of friends you want to invite to your birthday party. To send them invitations, you need their home addresses. Now, you know their names, but you don’t know their addresses. So, you ask your mom to help you find their addresses. Your mom checks her address book and tells you where each friend lives.
In a computer network, devices (like computers, phones, or printers) need to “talk” to each other. Each device has a name (called an IP address) and a unique identification number (called a MAC address). When a device wants to talk to another device, it needs to find the other device’s MAC address using its IP address.
Address Resolution Protocol (ARP) is like your mom in this situation. It helps devices find each other’s MAC addresses using their IP addresses, just like your mom helped you find your friends’ addresses.
Now, ARM (ARP Monitoring) is like keeping an eye on the address book. It checks that no one is trying to give wrong addresses or pretend to be someone they’re not. This helps to keep the computer network safe and secure, so all devices can happily talk to each other.