In the Eth0 dialog box, provide the following information:
Select the check box to enable Eth0, or deselect the check box to disable it.
In the Friendly Name text box, type a name for Eth0.
For Mode, use the option buttons to select one of the following modes:
Static
DHCP
BOOTP
In the IP Address text box, type the IP address.
In the Net Mask text box, type the net mask address.
In the Default Gateway text box, type the default gateway address.
Click Update Interface.