如何永久禁用网络接口?


22

我使用断开了网络接口ifconfig wlan0 down,但每隔几个小时左右,该wlan0接口就会恢复正常,我不知道为什么。

我不重启机器,从未改变/etc/network/interface。我想我的问题是,我将如何“永久”禁用wlan0。我用/etc/network/interface吗?我已经有ifconfig wlan0 down自己的了rc.local

Answers:


32

方法1-从NetworkManager的Applet

尝试禁用“网络小程序”下的无线网络,可从桌面右上角的图标访问该小程序。

                                                    SS#!

注意:网络小程序的图标看起来像一个三角形的楔形。上面的图像指向的是箭头1。如果单击它,应该会看到一个菜单滑出菜单,您可以从该菜单中永久禁用无线功能,箭头2。

方法2-/ etc / network / interfaces

从文件中,/etc/network/interfaces您可以指定NetworkManager不应控制wlan0界面。为此,只需将此行添加到上述文件中:

iface wlan0 inet manual

然后重新启动NetworkManager:

$ sudo service network-manager restart

参考文献


1
方法1仅在您只有一张wifi卡时才起作用...
xuhdev

0

我必须执行与此类似的操作,但希望该设备完全不启动。我们已经物理掩盖了基于Linux的设备中的以太网端口,因此它根本不会出现。

我是用udev规则完成的。

当添加具有eno2的ID_NET_NAME_ONBOARD的网络设备时,此udev规则将告诉linux删除pci设备。将其添加到例如/etc/udev/rules.d/90-disable-eno2.rules

ACTION=="add", SUBSYSTEM=="net", ENV{ID_NET_NAME_ONBOARD}=="eno2", RUN+="/bin/sh -c 'echo 1 > /sys$DEVPATH/device/remove'"

神奇的环境变量(如ID_NET_NAME_ONBOARD)由udev 在此处设置。我已经从下面那个文件的注释中复制了一些示例。

PCI Ethernet card with firmware index "1":
    ID_NET_NAME_ONBOARD=eno1
    ID_NET_NAME_ONBOARD_LABEL=Ethernet Port 1

PCI Ethernet card in hotplug slot with firmware index number:
    /sys/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/net/ens1
    ID_NET_NAME_MAC=enx000000000466
    ID_NET_NAME_PATH=enp5s0
    ID_NET_NAME_SLOT=ens1

PCI Ethernet multi-function card with 2 ports:
    /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/enp2s0f0
    ID_NET_NAME_MAC=enx78e7d1ea46da
    ID_NET_NAME_PATH=enp2s0f0
    /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.1/net/enp2s0f1
    ID_NET_NAME_MAC=enx78e7d1ea46dc
    ID_NET_NAME_PATH=enp2s0f1

PCI wlan card:
    /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlp3s0
    ID_NET_NAME_MAC=wlx0024d7e31130
    ID_NET_NAME_PATH=wlp3s0

USB built-in 3G modem:
    /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.6/net/wwp0s29u1u4i6
    ID_NET_NAME_MAC=wwx028037ec0200
    ID_NET_NAME_PATH=wwp0s29u1u4i6

USB Android phone:
    /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/net/enp0s29u1u2
    ID_NET_NAME_MAC=enxd626b3450fb5
    ID_NET_NAME_PATH=enp0s29u1u2

s390 grouped CCW interface:
    /sys/devices/css0/0.0.0007/0.0.f5f0/group_device/net/encf5f0
    ID_NET_NAME_MAC=enx026d3c00000a
    ID_NET_NAME_PATH=encf5f0

测试规则时,您将需要运行以下命令,以确保所有内容都匹配并且语法正确。

# Find the path marked "P" with this command.
udevadm info --path=/sys/class/net/eno2

# Test with this command with the path from above
udevadm test --action="add" /devices/pci0000:00/0000:00:1c.4/0000:03:00.0/net/eno2 2>&1 | less

0

您可以使用systemd永久禁用网络接口。例如,如果要禁用wlan0

$ systemctl | grep wlan0
sys-devices-platform-soc-XXX.auto-net-wlan0.device loaded active plugged   /sys/devices/platform/soc/XXX.auto/net/wlan0
sys-subsystem-net-devices-wlan0.device             loaded active plugged   /sys/subsystem/net/devices/wlan0                                                                     
wpa_supplicant@wlan0.service                       loaded active running   WPA supplicant daemon (interface-specific version)                                                   

接下来,一个接一个地拿他们,看看他们做了什么:

$ systemctl status wpa_supplicant@wlan0.service
● wpa_supplicant@wlan0.service - WPA supplicant daemon (interface-specific version)
   Loaded: loaded (/lib/systemd/system/wpa_supplicant@.service; disabled; vendor preset: enabled)
   Active: active

停止并禁用它们:

$ sudo systemctl stop wpa_supplicant@wlan0.service
$ sudo systemctl disable wpa_supplicant@wlan0.service

wpa_supplicant@wlan0.service例如,禁用将具有wlan0接口将不会尝试连接到无线网络的效果。

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