Red Hat Enterprise Linux 5 and its derivative CentOS 5, includes tools to configure the network device. This article describes how to configure network devices in Red Hat Enterprise Linux or CentOS 5.

Configure Network Device (GUI)

This section describes how to configure the network device using GUI tools.

Network1. Click System, select Administration then click Network. This will launch the Network Configuration window.
Network Configuration2. Select the network device you want to modify and click Edit.
Ethernet Device3. In the Ethernet Device window, apply your changes and click OK.
Edit DNS4. Click the DNS tab and apply your DNS settings.
Save5. To save your changes, click the File and click Save.
Restart6. To effect your changes, click the Devices tab. Next, select the device and click Deactivate then click Activate to reactivate the device.
NoteAlthough the Network Configuration tool has a feature to update the /etc/hosts file, it is more reliable to edit it directly instead.

Configure Network Device (TUI)

This section describes how to configure the network device using text user interface (TUI) tools.

Network Configuration1. Launch the Network Configuration TUI tool using the command below. Then apply the necessary changes to your network device.
system-config-network-tui
Restart2. To effect your changes, restart the network service using the command below.
service network restart

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Posted on 8/29/2010 and last updated on 8/29/2010
Filed under CentOS 5 , Red Hat Enterprise Linux 5 , System Administration