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5.2.2. Configuring New and Editing Existing Connections
Next, right-click on the NetworkManager applet to open its context menu, which is the main point of entry for interacting with NetworkManager to configure connections.
The NetworkManager applet's context menu
Ensure that the Enable Networking box is checked. if the system has detected a wireless card, then you will also see an Enable Wireless menu option. Check the Enable Wireless checkbox as well. NetworkManager notifies you of network connection status changes if you check the Enable Notifications box. Clicking the Connection Information entry presents an informative Connection Information window that lists the connection type and interface, your IP address and routing details, and so on. Useful network information is thus always two clicks away.
Finally, clicking on Edit Connections opens the Network Connections window, from where you can perform most of your network configuration tasks. Note that this window can also be opened by running, as a normal user:
~]$ nm-connection-editor &
Configure networks using the Network Connections window