Revision as of 10:59, 2 March 2010

Configuring a Network Using Virtual Machines

Caution!
This lab is very much under construction. Please do not start it until this warning is removed.

Configure a virtual network for Virtual Machines
Use the Fedora GUI program to configure network interfaces with static IP configuration and host name resolution
Use the find command to locate the configuration files modified by the GUI network configuration program
To examine some of the Linux's TCP/IP configuration files in the /etc/ directory
To configure a Fedora host with static network configuration without a GUI tool
To use and interpret the netstat command to troubleshoot and monitor network services
To configure the linux firewall iptables to allow/disallow/forward different types of network traffic using simple rules

man pages for find, ifconfig, ping, netstat, NetworkManager, nslookup, iptables, arp
Online reading material for week 8.

Fedora 12 Live CD or a classmate on the same pod
USB flash drive, 64 MB or more in size (Warning: the contents of this drive will be erased)
One SATA hard disk in a removable drive tray with Fedora host and 3 Fedora Virtual Machines installed

Currently you should have the following network configuration:

Fedora host has 1 active network interface (probably eth0)that receives IP configuration from the School's DHCP server.
Fedora host has 1 active network interface (virbr0) that has a static default configuration of 192.168.122.1/255.255.255.0
Fedora1 VM has 1 active interface (eth0) that receives a dynamic configuration from your Fedora Host
Fedora2 VM has 1 active interface (eth0) that receives a dynamic configuration from your Fedora Host
Fedora3 VM has 1 active interface (eth0) that receives a dynamic configuration from your Fedora Host

Important We will be working with your 3 VM's
Start all 3 VM's for this lab.

Important
It is advisable to perform a yum update on your Fedora host and all 3 VM's.

Before configuring our network we want to turn off dynamic network configuration for our Virtual Machines.

On the fedora host start Virtual Machine Manager
Under Edit->Host Details select the Virtual Networks tab
Disable the default configuration from starting at boot by deselecting the "Autostart On Boot" checkbox.
Stop the default network configuration by clicking on the stop button at the bottom of the window.
Click on the add button to add a new network configuration.
Give your new network a name (network1)
Enter in the new network IP address space:
- 192.168.235.0/24
Disable DHCP by deselecting the check box.
Enable Network Forwarding by Selecting "Forwarding to physical network"
The destination should be "Any physical device" and the mode should be "NAT"
Answer the Investigation 1 question in your lab log book.

@@ Line 48: / Line 48: @@
 # Enable Network Forwarding by Selecting "Forwarding to physical network"
 # The destination should be "Any physical device" and the mode should be "NAT"
+# Answer the Investigation 1 question in your lab log book.