Step 1 :
Go to the Apple Apps Store to install the current version of
XCode if you do not have it installed.Step 2 :
Install Homebrew if you do not have it installed.
sudo ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"Step 3 :
To test the install if it is success or not :
brew doctorStep 4 :
brew install git
brew install cmake
brew install libdnet
brew install libnet
brew link libdnetStep 5 :
cd ~sudo git clone git://git.code.sf.net/p/arpon/code arponsudo -sH
cd arpon
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
make
make installexitStep 6 :
cd ~
nano arpon_startup
/usr/sbin/arpon -i en0 -D -qchmod +x arpon_startupStep 7 :
sudo nano /System/Library/LaunchDaemons/org.arpon.startup.plist*** Please note that where "samiux" is my username, change to your username accordingly.
Step 8 :
Reboot your Mac.
REFERENCE
ArpON - ARP Handler Inspection
Installing Homebrew on OS X Yosemite 10.10, Package Manager for Unix Apps
Protect you from being ARP spoofing
That's all! See you.

