installing library phython 2.5 before or up of version and Libcap.
and then download application this link sini to version 0.25 and this link sini.
and then ectract and come in whit root and then run through the terminal
#./antinetcut.py start2. disable the icmp.
whit disable the icmp we can block packet poison.
sudo su echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all3. Protect Me on tuxcut
if you using linux, can install tuxcut so, because on the choice protect me, that protected from arp attack poisoning opponent.