14.1 An Introduction to NetworkManager

NetworkManager is a service and set of tools designed specifically to make it easier to manage the networking configuration on Linux systems and is the default network management service on Ubuntu desktop installations.

In addition to a service that runs in the background, NetworkManager also includes the following tools:

•nmcli - A tool for working with NetworkManager via the command-line. This tool is useful when access to a graphical environment is not available and can also be used within scripts to make network configuration changes.

•nmtui - A basic text-based user interface for managing NetworkManager. This tool can be run within any terminal window and allows changes to be made by making menu selections and entering data. While useful for performing basic tasks, nmtui lacks many of the features provided by the nmcli tool.

•nm-connection-editor - A full graphical management tool providing access to most...