# 3 Installing DHCP3-Server

Installing DHCP3-Server

 

Welcome back! Are Backtrack VM now needs a DHCP3-Server so when we are doing wireless attacks are victems that connect to us will be given an IP address. In this tutorial i will first show you how to install the DHCP3-Server and secodly i will show you how to configure it.

 

 

Installing the DHCP3-Server

 

This should be very easy BUT!!! When you try to install DHCP3-Server it trows an error because one of it dependancies does not match what we have installed. So now we have to downgrade its dependancy show below....

 

First lets open a terminal and type in the bold code below:

 

apt-get install synaptic

 

Now when thats installed, start synaptic by entering the bold text below into the terminal:

 

synaptic

 

Once synaptic starts it will update and once thats done search for dhcp3-common

You should see dhcp3-common on top of the list, highlight it and goto the toolbar at the top of the window and select Package > Force Version (like below)

Now in the drop-down menu, select “3.1.3-2ubuntu3.2 (stable)” and click force version and then “Mark”.
 

Press the “Apply” button with the green checkmark. Double-check to make sure you’re doing the right thing in the pop-up window. You will be removing dhcp3-common, dhcp3-gtk, dhcp3-daemon, and also Wicd.

Wait for Synaptic to do it’s thing and then close it. (Don’t reboot or anything like that!)

Since Wicd is important for starting and stopping networking with a GUI, reopen the terminal window and type in the bold text below

apt-get install wicd

(note: if you get an error installing WICD like i did then pause you VM and Resume it because that worked for me)

Now we can finally install DHCP3-Server by entering into the terminal the text in bold below:

apt-get install dhcp3-server

That should be installed now!

Configure the DHCP3-Server

Now we can configure the DHCP3-Server. This is easy!

On the desktop select Places > Computer > File System

We should now be able to see the root file system and in here we need to find the dhcp3 server config file so select etc > dhcp3

You should now see the file dhcpd.conf

Now open it and delete all its contents and replace with the text in bold below

default-lease-time 600;
 max-lease-time 7200;

option subnet-mask 255.255.255.0;
 option broadcast-address 192.168.0.255;
 option routers 192.168.0.1;
 option domain-name-servers 192.168.0.1, 192.168.0.2;
 option domain-name "yourdomainname.com";

subnet 192.168.0.0 netmask 255.255.255.0 {
 range 192.168.0.10 192.168.0.200;
 }

(note:edit the IP's to match your network)

Save this and close everything until your back at the desktop.

Now lets test if it working by opening a terminal and entering the text in bold below

/etc/init.d/dhcp3-server start

If you get the text in bold below then everything went ok!

* Starting DHCP server dhcpd3                                           [ OK ]