#1 2022-09-28 09:09:00

rbh

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From: South of Lapplands inland

Registered: 2016-08-11

Posts: 1,921

NetworkManager for managing Wi-Fi, cable and modem network connection

BunsenLabs Linux uses default NetworkManager to provide detection and configuration for systems to automatically connect to networks.

The NetworkManager daemon attempts to make networking configuration and operation as painless and automatic as possible by managing the primary network connection and other network interfaces, like Ethernet, Wi-Fi, and Mobile Broadband devices. NetworkManager will connect any network device when a connection for that device becomes available, unless that behavior is disabled. For wireless networks, NetworkManager prefers known wireless networks and has the ability to switch to the most reliable network.

Known network-profiles is saved in /etc/NetworkManager/system-connections/*

Note: NetworkManager will not handle network interfaces listed in file /etc/networks!

Package "network-manager-gnome", provides "nm-applet", a systray applet which will display an icon in tint2. It displays the available networks and allows users to easily switch between them and edit new connections.

Hoovering the mouse over the network icon in the Tint2 systray, pops tooltip with info of current network status.

With right-click on the icon, you can choose to get more information about current connection.
Choice “Edit Connections” (command nm-connection-editor) will let you add,  remove,  and modify network connections.

Left-click, Lists current and available connections.

Screen dumps from configuring network with nm-connection-editor is on https://linuxhint.com/nm-connection-editor-ubuntu/

NetworkManager has command-line interfaces:

nmtui or the submenus: nmtui-connect, nmtui-edit and nmtui-hostname is simple curser‐based TUI applications (TUI – "Terminal User Interface" or "Text-based User Interface") for interacting with NetworkManager. When starting nmtui, the user is prompted to choose the activity to perform unless it was specified as the first argument (edit, connect or hostname).

nmcli (Network Manager Command Line Interface) - command-line tool for controlling NetworkManager, display network device status, create, edit, activate/deactivate, and delete network connections. Can be used in scripts.
Example of usage:
    nmcli con up [SSID] | [connectionname]
    nmcli device status

nm-online — ask NetworkManager whether the network is connected

You can revert to classic naming cheme of network devices; eth0 and/or wlan0, by editing /etc/default/grub.
Change line

GRUB_CMDLINE_LINUX=""

to:

GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0" 

. 
Save /etc/default/grub and run command "sudo update-grub".

For more info, see manpages; NetworkManager, NetworkManager.conf, nmcli, nmcli-examples, nmtui, nm-applet  and nm-connection-editor.
https://wiki.debian.org/NetworkManager,
https://wiki.debian.org/NetworkConfiguration
https://wiki.archlinux.org/title/NetworkManager
https://developer-old.gnome.org/NetworkManager/

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// Regards rbh

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