What is "Netcut" and How it works?


NetCut
This is a commonly used tool used on networks to cut down the network connection of victim. It makes  a Denial of Service attack on the Victim so that he doesn’t get internet access. It does so by flooding the switch with unreal MAC address entries that point to the victim’s ip address, so the packets are mapped incorrectly and the victim receives no packets. 

Lets understand how it works:
Suppose there is a Desktop PC with:

      Hostname :  C4  
      IP : 10.0.0.81 
      Gateway : 10.0.0.138
We use here 3 tools:
1.Netcut : To make Attack.
2.Ethereal : To Checks Packets.
3.AntiArp : To monitors and block all incoming and outgoing ARP traffic from / to my pc.
  
First we use NetCut on my machine to block user 10.0.0.10  



On the ethereal, it made 1767 ARP packets in only one minute..!


The AntiArp shows that I ‘m sending fake Mac address to the gateway and I’m disguised as the victim’s IPaddress. (while if we make a man in the middle attack , we can get victims MAC address and set is as our MAC addr and give victim other addr ) .




How to defend against a similar type of attack ?
. AntiArp is a nice tool the defends the MAC Denial of Service attack.
. NetCut itself has an option to protect my computer. (It has option protect my PC . Simply select that checkbox)

Disclaimer : This Post is only for informative purpose. Site is not responsible for any kind misuse of  this knowledge.
Please Don’t use the knowledge you get from this post to do any type of attacks. 
 courtesy :  tamermaher.spaces.live.com



8 comments:

Tarkan-t29's Blog December 25, 2011 at 11:09 PM  

Thanks ! Now I unterstand how this program works, kinda amazing how it is powerful !

Anonymous,  February 15, 2013 at 9:56 AM  

Is there any different program that i can use to stop netcut?

wozniakz March 19, 2014 at 8:56 AM  

@anonymous : just use a static arp to your gateway

Anonymous,  April 19, 2014 at 7:01 AM  

Simply use the netcut or ifconfig is the same thing but you have

Anonymous,  August 5, 2015 at 1:18 PM  

Hmm now I wonder how the 'Protect my computer' check box works in this program works.

pradip bhattarai January 3, 2016 at 5:58 PM  

In my laptop it doesnt get install it says packet.dll file missing

prabhas,  June 21, 2016 at 8:54 PM  

Please gave me antiarp donload link

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