24

Can anybody help me to how can I enable and disable network card through terminal?

2
  • if you want to disable for example the eth0 (ethernet port), you can sudo ifconfig eth0 down which will disable (down) the port. changing down to up will re-enable it. use ifconfig to view your ports. this works on a port basis; so a nic (network interface card) with four ports will require each port to be disabled individually.
    – guiverc
    Oct 16, 2017 at 9:25
  • @chrisguiver That sounds like an answer. Would you be willing to post it (or something like it) as one? Oct 16, 2017 at 10:06

3 Answers 3

24

Since ifconfig has been deprecated for many years now, you should probably use the ip command :

To list the interfaces:

ip link

or with the ip addresses:

ip a

To take one down:

if=eth0
sudo ip link set $if down
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  • 2
    or for enabling use sudo ip link set eth0 up
    – Adam
    Jul 2, 2020 at 22:01
  • How does one keep it down after reboot?
    – Teekin
    Jan 28 at 21:05
17

use ifconfig to view your ethernet or NIC ports (to get port names; eg. eth0 was the first port on my machine, next was eth1 etc)

to disable say port named eth0 use

sudo ifconfig eth0 down

to re-enable the port use

sudo ifconfig eth0 up

note: this disables (down) and enables (up) each port individually. if for example a NIC (network interface card) has four ports on a card, you need to enable/disable each port individually.

5
  • 2
    Is this permanent?
    – chris
    Jun 14, 2019 at 8:53
  • It pulls the interface down/up as the machine is running, but on reboot, or a restart of networking [service] the NIC status will return to default.
    – guiverc
    Jun 14, 2019 at 9:01
  • What do you mean by "port"? I don't see any port number specified in your commands. May 23, 2020 at 9:58
  • The port used in that example was eth0, for my current workstation there is no eth0, but it would be enp0s25 (I'm using a later kernel which uses a different naming technique)
    – guiverc
    May 23, 2020 at 10:13
  • There must be another command to toggle the wifi card with fn+f8 - network symbol on my laptop. This is also possible from cmd. The cmd is something with list.
    – Timo
    Apr 28 at 18:53
10

To see list of network cards:

lshw -C network

You will see all the network cards. Attention to logical name example:

logical name: wlp6s0
logical name: enp7s0

So just use ifconfig to enable or disable it.

Examples:

  • Enable sudo ifconfig wlp6s0 up
  • Disable: sudo ifconfig enp7s0 down
2
  • 1
    I don't see any logical name while running "lshw -C network". Do we have way to find location name?
    – Tectrendz
    Mar 27, 2019 at 19:47
  • does not do anything on Ubuntu 18.04 Sep 23, 2020 at 5:46

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