4P14
Lab 5
Network Configuration
Windows Static IP.
Boot into Windows. Open a cmd window.
The microsoft version if ifconfig is ipconfig. Run this and write
down your IP, gateway, and netmask, DNS. Are these the same as
those in Linux? Why?
Open the network configuration. What protocols are active?
Set windows to use a static IP with a static value of +25 over
that which would be assigned by DHCP. Configure the other fields
as well. Restart so that the settings take effect. Verify your
network is working. You can check the setting by running ipconfig.
Once complete, restore the Windows system to use dynamic
configuration.
Back into Linux
Open a Linux terminal. The router will configure the system for
IP, Gateway,DNS, and Mask.
Determine your IP & netmask.
Determine your Gateway, route -nee
Determine your DNS, this is kept in the file
/etc/resolv.conf
Configuration setting are kept in the directory
/etc/sysconfig/network-scripts. Each interface maybe configured
with its own scripts. What is the name of your wired interface?
Find the script with the same name, if you don't have one, then
em1 will likely be it. "cat" it, the DEVICE= field will define the
interface.
Linux uses NetworkManager to allow network configuration
to be "Managed". We need to turn this off.
chkconfig NetworkManager off
We also bring down the network. Sudo as appropriate.
service network stop
Copy the device configuration file to something.bak so you don't
loose the settings.
Create a new file labelled ifcfg-<deviceName> and enter the
following fields:
DEVICE="<interfacename>"
BOOTPROTO="static"
HWADDR="<MACaddress>"
IPADDR="<IPaddress>"
NETMASK="<netmask>"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
GATEWAY
="<gateway address>"
DNS1="<dns
address>"
Once complete bring up the interface with
ifcfg-<deviceName>, Sudo where appropriate.
Restart the network service. Try your network.
Once complete, reverse the procedure and set the system back to
DHCP.