6

How can I persistently prevent a wireless interface using wpa_supplicant in roaming mode from connecting to a particular open network foo?

This doesn't work:

$ sudo wpa_cli
> blacklist 00:11:22:33:44:55
FAIL

Nor does the following:

/etc/network/interfaces:

allow-hotplug wlan0
iface wlan0 inet manual
  wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf

wpa_supplicant.conf:

network={
 ssid="foo"
 key_mgmt=NONE
 priority=0
}
7

You can set the option disabled=1 in the corresponding network entry in wpa_supplicant.conf. This will prevent wpa_supplicant from automatically connecting to the network (it'll still try to connect to it if you specifically ask it to do so).

5
  • where is this file on debian Jessie?
    – DrBeco
    Jul 5 '15 at 21:45
  • Usually it's /etc/wpa_supplicant/wpa_supplicant.conf
    – lgeorget
    Jul 6 '15 at 17:45
  • Thanks Igeorget. The directory exists and there are some scripts there, but no wpa_supplicant.conf. Maybe there is no configuration file at all in the default installation for Debian Jessie?
    – DrBeco
    Jul 6 '15 at 17:52
  • Hmm I guess not. You probably have to create it. You could look for an example in /usr/share/doc/wpa_supplicant... But the easiest is probably to use a graphical tool to configure your network such as NetworkManager or wpa_cli.
    – lgeorget
    Jul 6 '15 at 17:57
  • Here, it does not work in the presence of a catch-all entry; see this question about it. Aug 14 '15 at 18:46
0

Try this:

sudo ifconfig wlan0 down

Then change the wpa_supplicant.conf to blank out the WiFi SSID and PSK Then run this:

 ifconfig wlan0 up; wpa_supplicant -iwlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf

This way it doesn't connect. Hope it helps.

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