mac-address-detector-java

Use pcap4j to detect a mac address of remote host

Reason

I searched the whole website, and I found no solution provided to detect a mac address of remote host under same subnetwork.

So I created this project.

Implementation

I used pcap4j to send and filtering packets. and for a IPv4 address, I used arp protocol related function to extract the mac address. and for a IPv6 address, I used ndp (neighbor discovery) protocol related function to extract the mac address.

Dependency

1. pcap4j 1.7.3
   
2. libpcap. (ready for use version files has been uploaded into libpcapfiles)

How to build

Build networkutils-*.jar

1. gradle build (no dep jars included)
2. gradle fatjar (recommended, dep jars included)

Run on linux

on linux, you can load the libpcap directly without install anything

java -Dorg.pcap4j.core.pcapLibName=libpcap.so -cp .:networkutils-all-0.2.jar Test 192.168.170.149

Run on windows

On windows, the npcap is required to be installed. (no reboot required)

java -Dorg.pcap4j.core.pcapLibName=wpcap.dll -Dorg.pcap4j.core.packetLibName=Packet.dll -cp .;networkutils-all-0.2.jar Test 192.168.170.149

Updates 01-24-2018

Add a func to do packet dump by using pcap4j. After build the jar, call the main class PacketDump. java -Dorg.pcap4j.core.pcapLibName=libpcap.so -cp .:networkutils-all-0.2.jar PacketDump "udp"