arpjs

Send ARP packets and read ARP tables using Javascript

Features

• Send ARP packets with complete control.
• Parse the OS ARP table.
• ARP Poison a given target.

Install

npm install arpjs

Usage

Include arpjs in your code

var arp = require('arpjs')

Send an ARP Request

arp.send({
  'op': 'request',
  'src_ip': '10.105.50.100',
  'dst_ip': '10.105.50.1',
  'src_mac': '8f:3f:20:33:54:44',
  'dst_mac': 'ff:ff:ff:ff:ff:ff'
  })

Selecting a network interface

By default, arpjs selects one of the active network interfaces to send the packet. If you want to select a particular interface, use the setInterface method.

arp.setInterface('wlan0')
arp.send(packet)

Read the ARP Table

arp.table(function(err, table){
  console.log(table)
})

Poison ARP Entries on the network

Tells 192.168.2.5 that I am 192.168.2.3, a.k.a. Sends a gratuitous ARP Reply to 192.168.2.5 telling that the MAC Address of 192.168.2.3 is its own MAC.

arp.poison('192.168.2.5', '192.168.2.3')

Available Options

Send API

  'hw_type': Hardware Type ([0x00, 0x01] -> Ethernet]), // Array
  'proto_type': Protocol Type ([0x08, 0x00] -> IPv4), // Array
  'hw_len': Hardware Length [0x06],// Array
  'proto_len': Protocol Length [0x04], // Array
  'op': Type of ARP Operation [request, reply], // String
  'src_ip': Source IP (192.168.1.2), // String
  'dst_ip': Destination IP (8.2.3.1), // String
  'src_mac': Source MAC (8f:3f:20:33:54:44), // String
  'dst_mac': Destination MAC (02:86:32:1f:2e:7c) // String

Debug

$ sudo DEBUG=arpjs:* node example.js

Prerequisite

• Libpcap, used by node-pcap. We use LIBPCAP's send binding for ARP packets.

Platforms tested (Works on platforms with libpcap installed)

• Mac OSX - 10.9.2
• Ubuntu - 12.04

Modules used / Credits

• node_pcap
• node-ip
• getmac
• debug

License

The MIT License (MIT)

Copyright (c) 2014 Ahamed Nafeez

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.