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The perfect solution to prevent ARP attacks under Fedora Core

The perfect solution to prevent ARP attacks under FedoraCore. If arping is used to solve LAN ARP attacks, the effect may not be very good. Now the perfect final solution version is released.

The necessary software Libnet local download arpoison local download

Fedora Core installation method (, other Linux distributions can Reference):

First install libnet

tar -xvzf libnet.tar.gz

cd libnet

./configure

make

make install

Install arpoison

tar -xvzf arpoison-0.6.tar.gz

cd arpoison< /p>

gcc arpoison.c /usr/lib/libnet.a -o arpoison

mv arpoison /usr/sbin

Usage: Usage: -i device -d dest_IP -s src_IP -t target_MAC -r src_MAC [-a] [-w time between packets] [-n number to send]

Example:

arpoison -i eth0 -d 172.16.18.254 -s 172.16.18.19 -t ff:ff:ff:ff:ff:ff -r 00:11:09:E8:78D

-i eth0 Specify the network interface eth0 for sending arp packets

-d 172.16.18.254 specifies the destination ip as 172.16.18.254

-s 172.16.18.19 specifies the source ip as 172.16.18.19

-t ff:ff :ff:ff:ff:ff specifies the destination mac address as ff:ff:ff:ff:ff:ff (arp broadcast address)

-r 00:11:09:E8:C8:ED specified The source mac address is 00:11:09:E8:C8:ED

The screenshot of wireshark is as follows:

Preventing ARP attacks under Fedora Core  The perfect solution

I wrote a small script. According to the comments, I believe Smart and wise everyone can fix the arp attack under linux:

#!bash

#arpDefend.sh

#######

#!bash

#arpDefend.sh

#######

#!bash

#arpDefend.sh

#######

p>

#yk103#

#######

#Gateway mac address

GATEWAY_MAC=000:F8:FF:4A: 23

#Destination mac address

DEST_MAC=ff:ff:ff:ff:ff:ff

p>

#Destination ip address

DEST_IP=172.16.18.254

#Local network card interface

INTERFACE=eth0

# $INTERFACE's mac address

MY_MAC=00:11:09:E8:78D

#$INTERFACE's ip address

MY_IP=172.16.18.19

p>

#Create a static ip/mac entry on this machine $DEST_IP--$GATEWAY_MAC

arp -s $DEST_IP $GATEWAY_MAC

#Send arp reply to make $DEST_IP Update the mac address of $MY_IP to $MY_MAC

arpoison -i $INTERFACE -d $DEST_IP -s $MY_IP -t $DEST_MAC -r $MY_MAC 1>/dev/null &

------------------------------------------------- -------------------------------

Conclusion:

Arpoison requires root Permission to run

arpoison needs libnet support

arpoison solves the problem of arp attack very well

--------- -------------------------------------------------- ---------------------

Digression:

In fact, arpoison itself can be used as an arp attack tool (see "Poison" can be known by the name), our method can be described as fighting poison with poison. As for how to use arpoison to perform arp attacks, I believe Bingxue smart people don’t need me to talk about it (haha~~)

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