After powering on either of the Linux virtual machines, you need to log in. The default credentials for both Linux environments are username root and password toor.
If you don’t have a DHCP server on your network, find your system’s address range and use the commands shown in the following listing. (Make sure that you replace your IP address with an unused one, and edit the network interface that you will be using. For more on manual network setup, see http://www.yolinux.com/TUTORIALS/LinuxTutorialNetworking.html.)
root@bt:˜# nano /etc/network/interfaces
Password:
<inside the nano editor place your valid information into the system>
# The primary network interface
auto eth0 # the interface used
iface eth0 inet static # configure static IP address
address 192.168.1.10 # your IP address you want
netmask 255.255.255.0 # your subnet mask
network 192.168.1.0 # your network address
broadcast 192.168.0.255 # your broadcast address
gateway 192.168.1.1 # your default gateway
<control-x>
<y>After configuration is complete, your Linux environment should be ready for use. Do not update the Ubuntu installation, because this system should remain vulnerable.