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.