network-commands¶
ifconfig | arp | netstat | route are “obsolete”¶
ifconfig
# ip link show
# ip addr show
# ip -s link
# ip addr add 192.168.122.150/24 dev eth0
# ip link set dev eth0 up|down
# ip link set dev device promisc on|off
# ip link set dev device mtu N
arp and route
# ip neigh show
# ip route
netstat
# ss -tuna4
Configure | Manipulate Network Adapter¶
ip addr add 192.168.122.150/24 dev eth0
ip addr flush dev eth0
ip link set dev eth0 up | down
ip link set dev eth0 promisc on | off
Network Manager¶
- nmcli command line tool
- nmtui text based graphical tool
- nm-connection-editor GTK3 based tool
Check if it is running
systemctl status NetworkManager
# nmcli con show
NAME UUID TYPE DEVICE
ens192 25946d9c-b79c-415d-97e0-638bc017c62d 802-3-ethernet ens192
virbr0 c9f5d0ca-a518-436c-adea-6db1c243c71f bridge virbr0
virbr1 8d8c5bff-2558-4ceb-b99a-e1aa14a120f5 bridge virbr1
vnet0 605fe99d-1d3b-4242-8127-d172c7450def tun vnet0
# nmcli con add con-name "eth0-work" type ethernet ifname eth0
# nmcli con mod "eth0-work" ipv4.addresses "192.168.20.100/24 192.168.20.1"
# nmcli con mod "eth0-work" +ipv4.dns 192.168.20.1
Notify NetworkManager about changes in config files
nmcli con reload
nmcli con down eth0
nmcli con up eth0
Switch to the new connection profile
nmcli con up "eth0-work"
nmcli dev status
Prevent Autostart
# nmcli con mod "eth0-work" connection.autoconnect no
Graphical Networking User Interfaces¶
- nmtui
- nm-connection-editor
