NAME

       dhcpstarv - DHCP starvation attack.

SYNOPSIS

       dhcpstarv -h

       dhcpstarv [-epv] [-d MAC] -i IFNAME

OPTIONS

       -d, --dstmac=MAC
               Use MAC as destination hardware address for DHCP requests. Default is to use broadcast address.

       -e, --exclude=ADDRESS
               Ignore  replies  from  server  with IP address ADDRESS. This must be valid IP address DHCP server
               include in replies as server ID. Usually this is a primary  IP  address  of  interface  which  is
               connected to client's network segment.

       -h, --help
               Print help and exit.

       -i, --ifname=IFNAME
               Send requests and receive responses on network interface IFNAME.

       -p, --no-promisc
               Do  not  set network interface to promiscuous mode. Some servers send replies to hardware address
               stored in DHCP options in spite of broadcast option presence, in which  case  this  option  cause
               dhcpstarv not to receive server replies.

       -v, --verbose
               Print verbose messages.

DESCRIPTION

       DHCP  starvation  is  attacking  a DHCP server by sending a lot of requests to it.  This lead to server's
       address pool exhausting after which DHCP server is not able to respond clients and give them new leases.

       dhcpstarv is tool that implements DHCP starvation attack. It requests DHCP leases on specified interface,
       save them and renew on regular basis.

       When a rogue DHCP server appear in network with DHCP infrastructure some clients can  get  wrong  network
       settings.  Those  rogue  servers  can  be switched by users by accident. The only solution to issue is to
       disconnect such server from network.  But it takes a lot of time to discover rogue server if  network  is
       complicated, i.e. there are many network devices in it. As a temporary solution you can attack rogue DHCP
       server until find and disconnect it from network.

COPYRIGHT

       Copyright (C) 2007 Dmitry Davletbaev

       This program is licenced under GNU General Public License version 3.

       This  program  comes  with  ABSOLUTELY  NO  WARRANTY.  This  is  free  software,  and  you are welcome to
       redistribute it under certain conditions; see <http://www.gnu.org/licenses/> for details.

version 0.1.0                                      2008-03-04                                       dhcpstarv(1)