man arpspoof (Administration système) - arpspoof - intercept packets on a switched LAN

NAME

arpspoof - intercept packets on a switched LAN

SYNOPSIS

arpspoof [-i interface] [-t target] host

DESCRIPTION
arpspoof redirects packets from a target host (or all hosts)
on the LAN intended for another host on the LAN by forging ARP
replies.  This is an extremely effective way of sniffing traffic on a
switch.


Kernel IP forwarding (or a userland program which accomplishes the
same, e.g. fragrouter(8)) must be turned on ahead of time.

OPTIONS
-i interface

Specify the interface to use.

-t target

Specify a particular host to ARP poison (if not specified, all hosts
on the LAN).

host

Specify the host you wish to intercept packets for (usually the local
gateway).

SEE ALSO
dsniff(8), fragrouter(8)

AUTHOR
Dug Song <dugsong@monkey.org>