Networking

Device driver

lspci -v

dmesg | grep module_name

module_name is the kernel module shown when running lspci -v. For instance: rtl8821ae (wireless) or r8169 (ethernet)

Network interfaces

Listing network interfaces

ls /sys/class/net or ip link

Enabling and disabling network interfaces

ip link set interface up|down

https://wiki.archlinux.org/index.php/Network_configuration

Wireless network configuration

List of network managers: https://wiki.archlinux.org/index.php/Network_manager

Activating WiFi manually non persistant (example with wlp3s0)

# pacman -S wpa_supplicant

Log in as root (not sudo)

# wpa_passphrase MOVISTAR_CFCD QlatrCMgyBpDGySYSekK > /etc/wpa_supplicant/foo.conf

# wpa_supplicant -B -i wlp3s0 -c /etc/wpa_supplicant/foo.conf

# dhcpcd wlp3s0

Activating WiFi automatically on boot (example with wlp3s0)

Method 1 (netctl)

# pacman -S dialog

# wifi-menu -o

# netctl enable wlp3s0-MOVISTAR_CFCD

Method 2 (systemd-networkd)

# pacman -S wpa_supplicant

Log in as root (not sudo)

# wpa_passphrase MOVISTAR_CFCD QlatrCMgyBpDGySYSekK > /etc/wpa_supplicant/wpa_supplicant-wlp3s0.conf

# systemctl enable wpa_supplicant@alp3s0.conf

Now make a file at /etc/systemd/network/wlp3s0-wireless-dhcp.network (it can really be named whatever you want):

[Match]

Name=wlp3s0

[Network]

DHCP=yes

Now ensure that systemd-networkd.service is enabled.

# systemctl enable systemd-networkd.service

Reboot

Method 3 (nmcli)

# pacman -S networkmanager

Log in as root (not sudo):

Turn wifi on or off

nmcli radio wifi <on|off>

List available access points(AP) to connect to

nmcli device wifi list

Create a new connection to a password protected AP

nmcli device wifi connect <SSID|BSSID> password <password>

Network Cofiguration (Ethernet)

Activating Ethernet manually (example with enp2s0)

# ip link set enp2s0 up

# dhcpcd enp2s0

Activating Ethernet automatically on boot (example with enp2s0)

# systemctl enable dhcpcd@enp2s0.service