node-arped

A cross platform ARP utility toolkit.

Install:

npm install arped

Usage:

var arped = require('arped');

console.log(arped.table());

API:

table() - String

Returns a string representation of the ARP table as it is read from the OS.

parse(String) - Object

Takes a string representation of the ARP table and parses it to an Object of the following format which is then returned.

Devices {
 <interface>: {
  <IPs>: { <MACs> }
  <MACs>: { <IPs> }
 }
}

Each device/interface is represented, although the format is OS specific. Every device/interface Object contains an IPs Object and a MACs Object. Both of these Objects contain each other, allowing you to lookup a MAC or IP:

parsedTable.devices['en0'].IPs['192.168.0.1']; // 00:11:22:33:44:55
parsedTable.devices['en0'].MACs['00:11:22:33:44:55']; // 192.168.0.1